Update test_execute_sql schema assertions for rich completion shape

Follow-up to d12f0d2c: the test regexes the inlined schema= JS and
still asserted the old flat list-of-strings shape.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

.github/workflows/deploy-latest.yml

@@ -14,46 +14,24 @@ jobs:
   deploy:
     runs-on: ubuntu-latest
     steps:
-    - name: Check deployment prerequisites
-      id: deployment-prerequisites
-      env:
-        GCP_SA_KEY: ${{ secrets.GCP_SA_KEY }}
-        LATEST_DATASETTE_SECRET: ${{ secrets.LATEST_DATASETTE_SECRET }}
-      run: |
-        missing=()
-        for variable in GCP_SA_KEY LATEST_DATASETTE_SECRET; do
-          if [[ -z "${!variable:-}" ]]; then
-            missing+=("$variable")
-          fi
-        done
-        if (( ${#missing[@]} )); then
-          echo "::notice::Skipping deployment because required environment variables are missing: ${missing[*]}"
-          echo "available=false" >> "$GITHUB_OUTPUT"
-        else
-          echo "available=true" >> "$GITHUB_OUTPUT"
-        fi
     - name: Check out datasette
-      if: ${{ steps.deployment-prerequisites.outputs.available == 'true' }}
       uses: actions/checkout@v7
     - name: Set up Python
-      if: ${{ steps.deployment-prerequisites.outputs.available == 'true' }}
       uses: actions/setup-python@v6
       with:
         python-version: "3.13"
         cache: pip
     - name: Install Python dependencies
-      if: ${{ steps.deployment-prerequisites.outputs.available == 'true' }}
       run: |
         python -m pip install --upgrade pip
         python -m pip install . --group dev
-        python -m pip install sphinx-to-sqlite==0.1a1 "s3-credentials>=0.17"
+        python -m pip install sphinx-to-sqlite==0.1a1
     - name: Run tests
-      if: ${{ steps.deployment-prerequisites.outputs.available == 'true' && github.ref == 'refs/heads/main' }}
+      if: ${{ github.ref == 'refs/heads/main' }}
       run: |
         pytest -n auto -m "not serial"
         pytest -m "serial"
     - name: Build fixtures.db and other files needed to deploy the demo
-      if: ${{ steps.deployment-prerequisites.outputs.available == 'true' }}
       run: |-
         python tests/fixtures.py \
           fixtures.db \
@@ -62,14 +40,13 @@ jobs:
           plugins \
           --extra-db-filename extra_database.db
     - name: Build docs.db
-      if: ${{ steps.deployment-prerequisites.outputs.available == 'true' && github.ref == 'refs/heads/main' }}
+      if: ${{ github.ref == 'refs/heads/main' }}
       run: |-
         cd docs
         DISABLE_SPHINX_INLINE_TABS=1 sphinx-build -b xml . _build
         sphinx-to-sqlite ../docs.db _build
         cd ..
     - name: Set up the alternate-route demo
-      if: ${{ steps.deployment-prerequisites.outputs.available == 'true' }}
       run: |
         echo '
         from datasette import hookimpl
@@ -81,7 +58,6 @@ jobs:
         ' > plugins/alternative_route.py
         cp fixtures.db fixtures2.db
     - name: And the counters writable stored query demo
-      if: ${{ steps.deployment-prerequisites.outputs.available == 'true' }}
       run: |
         cat > plugins/counters.py <<EOF
         from datasette import hookimpl
@@ -121,15 +97,12 @@ jobs:
     #     cat metadata.json
     - id: auth
       name: Authenticate to Google Cloud
-      if: ${{ steps.deployment-prerequisites.outputs.available == 'true' }}
       uses: google-github-actions/auth@v3
       with:
         credentials_json: ${{ secrets.GCP_SA_KEY }}
     - name: Set up Cloud SDK
-      if: ${{ steps.deployment-prerequisites.outputs.available == 'true' }}
       uses: google-github-actions/setup-gcloud@v3
     - name: Deploy to Cloud Run
-      if: ${{ steps.deployment-prerequisites.outputs.available == 'true' }}
       env:
         LATEST_DATASETTE_SECRET: ${{ secrets.LATEST_DATASETTE_SECRET }}
       run: |-
@@ -148,12 +121,12 @@ jobs:
             --install 'datasette-ephemeral-tables>=0.2.2' \
             --service "datasette-latest$SUFFIX" \
             --secret $LATEST_DATASETTE_SECRET
-    - name: Upload latest documentation database to S3 (only for main)
+    - name: Deploy to docs as well (only for main)
-      if: ${{ steps.deployment-prerequisites.outputs.available == 'true' && github.ref == 'refs/heads/main' }}
+      if: ${{ github.ref == 'refs/heads/main' }}
-      env:
-        AWS_ACCESS_KEY_ID: ${{ secrets.S3_DATASETTE_DOCS_ACCESS_KEY }}
-        AWS_SECRET_ACCESS_KEY: ${{ secrets.S3_DATASETTE_DOCS_SECRET_KEY }}
       run: |-
-        # Keep development documentation separate from the stable release database.
+        # Deploy docs.db to a different service
-        s3-credentials put-object datasette-docs latest/docs.db docs.db \
+        datasette publish cloudrun docs.db \
-          --content-type application/octet-stream
+            --branch=$GITHUB_SHA \
+            --version-note=$GITHUB_SHA \
+            --extra-options="--setting template_debug 1" \
+            --service=datasette-docs-latest

.github/workflows/publish.yml

@@ -2,7 +2,7 @@ name: Publish Python Package
 
 on:
   release:
-    types: [published]
+    types: [created]
 
 permissions:
   contents: read
@@ -51,8 +51,6 @@ jobs:
     - name: Publish
       uses: pypa/gh-action-pypi-publish@release/v1
 
-  # After the first non-prerelease 1.0 release, disable this job on 0.65.x,
-  # even for later 0.65 releases, so they cannot overwrite the 1.0 stable docs.
   deploy_static_docs:
     runs-on: ubuntu-latest
     needs: [deploy]
@@ -68,20 +66,26 @@ jobs:
     - name: Install dependencies
       run: |
         python -m pip install . --group dev
-        python -m pip install sphinx-to-sqlite==0.1a1 "s3-credentials>=0.17"
+        python -m pip install sphinx-to-sqlite==0.1a1
     - name: Build docs.db
       run: |-
         cd docs
         DISABLE_SPHINX_INLINE_TABS=1 sphinx-build -b xml . _build
         sphinx-to-sqlite ../docs.db _build
         cd ..
-    - name: Upload stable documentation database to S3
+    - id: auth
-      env:
+      name: Authenticate to Google Cloud
-        AWS_ACCESS_KEY_ID: ${{ secrets.S3_DATASETTE_DOCS_ACCESS_KEY }}
+      uses: google-github-actions/auth@v2
-        AWS_SECRET_ACCESS_KEY: ${{ secrets.S3_DATASETTE_DOCS_SECRET_KEY }}
+      with:
+        credentials_json: ${{ secrets.GCP_SA_KEY }}
+    - name: Set up Cloud SDK
+      uses: google-github-actions/setup-gcloud@v3
+    - name: Deploy stable-docs.datasette.io to Cloud Run
       run: |-
-        s3-credentials put-object datasette-docs docs.db docs.db \
+        gcloud config set run/region us-central1
-          --content-type application/octet-stream
+        gcloud config set project datasette-222320
+        datasette publish cloudrun docs.db \
+            --service=datasette-docs-stable
 
   deploy_docker:
     runs-on: ubuntu-latest

.github/workflows/test.yml

@@ -11,17 +11,16 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.10", "3.11", "3.12", "3.13", "3.14", "3.15"]
+        python-version: ["3.10", "3.11", "3.12", "3.13", "3.14"]
     steps:
     - uses: actions/checkout@v7
     - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v7
+      uses: actions/setup-python@v6
       with:
         python-version: ${{ matrix.python-version }}
         allow-prereleases: true
         cache: pip
         cache-dependency-path: pyproject.toml
-        check-latest: true
     - name: Build extension for --load-extension test
       run: |-
         (cd tests && gcc ext.c -fPIC -shared -o ext.so)

Dockerfile

@@ -1,4 +1,4 @@
-FROM python:3.11-slim-bookworm AS build
+FROM python:3.11.0-slim-bullseye as build
 
 # Version of Datasette to install, e.g. 0.55
 #   docker build . -t datasette --build-arg VERSION=0.55

datasette/_pytest_plugin.py

@@ -89,8 +89,7 @@ def pytest_runtest_protocol(item, nextitem):
                 continue
             try:
                 ds.close()
-            except Exception as e:  # noqa: BLE001
+            except Exception as e:
-                # Surfaced as a pytest warning; teardown must not fail the run
                 item.warn(
                     pytest.PytestUnraisableExceptionWarning(
                         f"Error closing Datasette instance: {e!r}"

datasette/actor_auth_cookie.py

@@ -1,9 +1,7 @@
-import time
-
-from itsdangerous import BadSignature
-
 from datasette import hookimpl
+from itsdangerous import BadSignature
 from datasette.utils import baseconv
+import time
 
 
 @hookimpl

datasette/blob_renderer.py

@@ -1,8 +1,7 @@
-import hashlib
-
 from datasette import hookimpl
+from datasette.utils.asgi import Response, BadRequest
 from datasette.utils import to_css_class
-from datasette.utils.asgi import BadRequest, Response
+import hashlib
 
 _BLOB_COLUMN = "_blob_column"
 _BLOB_HASH = "_blob_hash"

datasette/cli.py

@@ -1,45 +1,43 @@
 import asyncio
+import uvicorn
+import click
+from click import formatting
+from click.types import CompositeParamType
+from click_default_group import DefaultGroup
 import functools
 import json
 import os
 import pathlib
+from runpy import run_module
 import shutil
+from subprocess import call
 import sys
 import textwrap
 import webbrowser
-from runpy import run_module
-from subprocess import call
-
-import click
-import uvicorn
-from click import formatting
-from click.types import CompositeParamType
-from click_default_group import DefaultGroup
-
 from .app import (
+    Datasette,
     DEFAULT_SETTINGS,
     SETTINGS,
     SQLITE_LIMIT_ATTACHED,
-    Datasette,
     pm,
 )
 from .inspect import inspect_tables
 from .utils import (
-    ConnectionProblem,
     LoadExtension,
-    SpatialiteConnectionProblem,
-    SpatialiteNotFound,
     StartupError,
-    StaticMount,
-    ValueAsBooleanError,
     check_connection,
     deep_dict_update,
     find_spatialite,
+    parse_metadata,
+    ConnectionProblem,
+    SpatialiteConnectionProblem,
     initial_path_for_datasette,
     pairs_to_nested_config,
-    parse_metadata,
     temporary_docker_directory,
     value_as_boolean,
+    SpatialiteNotFound,
+    StaticMount,
+    ValueAsBooleanError,
 )
 from .utils.sqlite import sqlite3
 from .utils.testing import TestClient
@@ -77,7 +75,7 @@ class Setting(CompositeParamType):
             # Datasette 1.0, we turn bare setting names into setting.name
             # Type checking for those older settings
             default = DEFAULT_SETTINGS[name]
-            name = f"settings.{name}"
+            name = "settings.{}".format(name)
             if isinstance(default, bool):
                 try:
                     return name, "true" if value_as_boolean(value) else "false"
@@ -173,6 +171,7 @@ async def inspect_(files, sqlite_extensions):
 @cli.group()
 def publish():
     """Publish specified SQLite database files to the internet along with a Datasette-powered interface and API"""
+    pass
 
 
 # Register publish plugins
@@ -579,27 +578,27 @@ def serve(
         # https://github.com/simonw/datasette/issues/2389
         deep_dict_update(config_data, settings_updates)
 
-    kwargs = {
+    kwargs = dict(
-        "immutables": immutable,
+        immutables=immutable,
-        "cache_headers": not reload,
+        cache_headers=not reload,
-        "cors": cors,
+        cors=cors,
-        "inspect_data": inspect_data,
+        inspect_data=inspect_data,
-        "config": config_data,
+        config=config_data,
-        "metadata": metadata_data,
+        metadata=metadata_data,
-        "sqlite_extensions": sqlite_extensions,
+        sqlite_extensions=sqlite_extensions,
-        "template_dir": template_dir,
+        template_dir=template_dir,
-        "plugins_dir": plugins_dir,
+        plugins_dir=plugins_dir,
-        "static_mounts": static,
+        static_mounts=static,
-        "settings": None,  # These are passed in config= now
+        settings=None,  # These are passed in config= now
-        "memory": memory,
+        memory=memory,
-        "secret": secret,
+        secret=secret,
-        "version_note": version_note,
+        version_note=version_note,
-        "pdb": pdb,
+        pdb=pdb,
-        "crossdb": crossdb,
+        crossdb=crossdb,
-        "nolock": nolock,
+        nolock=nolock,
-        "internal": internal,
+        internal=internal,
-        "default_deny": default_deny,
+        default_deny=default_deny,
-    }
+    )
 
     # Separate directories from files
     directories = [f for f in files if os.path.isdir(f)]
@@ -622,7 +621,9 @@ def serve(
                 conn.close()
             else:
                 raise click.ClickException(
-                    f"Invalid value for '[FILES]...': Path '{file}' does not exist."
+                    "Invalid value for '[FILES]...': Path '{}' does not exist.".format(
+                        file
+                    )
                 )
 
     # Check for duplicate files by resolving all paths to their absolute forms
@@ -663,6 +664,16 @@ def serve(
         # Private utility mechanism for writing unit tests
         return ds
 
+    # Run async soundness checks before startup hooks, since invoke_startup
+    # now populates internal tables which requires querying each database
+    run_sync(lambda: check_databases(ds))
+
+    # Run the "startup" plugin hooks
+    try:
+        run_sync(ds.invoke_startup)
+    except StartupError as e:
+        raise click.ClickException(e.args[0])
+
     if headers and not get:
         raise click.ClickException("--headers can only be used with --get")
 
@@ -670,18 +681,10 @@ def serve(
         raise click.ClickException("--token can only be used with --get")
 
     if get:
-        # --get means we don't run Uvicorn at all
-        run_sync(lambda: check_databases(ds))
-
-        try:
-            run_sync(ds.invoke_startup)
-        except StartupError as e:
-            raise click.ClickException(e.args[0])
-
         client = TestClient(ds)
         request_headers = {}
         if token:
-            request_headers["Authorization"] = f"Bearer {token}"
+            request_headers["Authorization"] = "Bearer {}".format(token)
         cookies = {}
         if actor:
             cookies["ds_actor"] = client.actor_cookie(json.loads(actor))
@@ -702,54 +705,30 @@ def serve(
         sys.exit(exit_code)
         return
 
-    # check_databases, invoke_startup() and the uvicorn server all run on a
+    # Start the server
-    # single event loop, so that anything a plugin's "startup" hook schedules
+    url = None
-    # on the loop (asyncio.create_task, Lock/Queue/Event objects, ...) is
+    if root:
-    # still alive when the server starts handling requests.
+        ds.root_enabled = True
-    async def _serve_async():
+        url = "http://{}:{}{}?token={}".format(
-        # Populate internal catalog tables before invoke_startup
+            host, port, ds.urls.path("-/auth-token"), ds._root_token
-        await check_databases(ds)
+        )
-
+        click.echo(url)
-        # Run the full startup sequence (immutable-database table-count
+    if open_browser:
-        # precompute + the "startup" plugin hooks) via the same entry point
+        if url is None:
-        # AsgiLifespan/AsgiRunOnFirstRequest use, so it's not skipped when
+            # Figure out most convenient URL - to table, database or homepage
-        # uvicorn's lifespan.startup fires moments later.
+            path = run_sync(lambda: initial_path_for_datasette(ds))
-        try:
+            url = f"http://{host}:{port}{path}"
-            await ds._startup_sequence()
+        webbrowser.open(url)
-        except StartupError as e:
+    uvicorn_kwargs = dict(
-            raise click.ClickException(e.args[0])
+        host=host, port=port, log_level="info", lifespan="on", workers=1
-
+    )
-        # Start the server
+    if uds:
-        url = None
+        uvicorn_kwargs["uds"] = uds
-        if root:
+    if ssl_keyfile:
-            ds.root_enabled = True
+        uvicorn_kwargs["ssl_keyfile"] = ssl_keyfile
-            url = "http://{}:{}{}?token={}".format(
+    if ssl_certfile:
-                host, port, ds.urls.path("-/auth-token"), ds._root_token
+        uvicorn_kwargs["ssl_certfile"] = ssl_certfile
-            )
+    uvicorn.run(ds.app(), **uvicorn_kwargs)
-            click.echo(url)
-        if open_browser:
-            if url is None:
-                # Figure out most convenient URL - to table, database or homepage
-                path = await initial_path_for_datasette(ds)
-                url = f"http://{host}:{port}{path}"
-            webbrowser.open(url)
-        uvicorn_kwargs = {
-            "host": host,
-            "port": port,
-            "log_level": "info",
-            "lifespan": "on",
-            "workers": 1,
-        }
-        if uds:
-            uvicorn_kwargs["uds"] = uds
-        if ssl_keyfile:
-            uvicorn_kwargs["ssl_keyfile"] = ssl_keyfile
-        if ssl_certfile:
-            uvicorn_kwargs["ssl_certfile"] = ssl_certfile
-        server = uvicorn.Server(uvicorn.Config(ds.app(), **uvicorn_kwargs))
-        await server.serve()
-
-    asyncio.run(_serve_async())
 
 
 @cli.command()
@@ -906,7 +885,7 @@ async def check_databases(ds):
             )
         except ConnectionProblem as e:
             raise click.UsageError(
-                f"Connection to {database.path} failed check: {e.args[0]!s}"
+                f"Connection to {database.path} failed check: {str(e.args[0])}"
             )
     # If --crossdb and more than SQLITE_LIMIT_ATTACHED show warning
     if (
@@ -914,5 +893,9 @@ async def check_databases(ds):
         and len([db for db in ds.databases.values() if not db.is_memory])
         > SQLITE_LIMIT_ATTACHED
     ):
-        msg = f"Warning: --crossdb only works with the first {SQLITE_LIMIT_ATTACHED} attached databases"
+        msg = (
+            "Warning: --crossdb only works with the first {} attached databases".format(
+                SQLITE_LIMIT_ATTACHED
+            )
+        )
         click.echo(click.style(msg, bold=True, fg="yellow"), err=True)

datasette/column_types.py

@@ -64,14 +64,14 @@ class ColumnType:
         Return an HTML string to render this cell value, or None to
         fall through to the default render_cell plugin hook chain.
         """
-        return
+        return None
 
     async def validate(self, value, datasette):
         """
         Validate a value before it is written. Return None if valid,
         or a string error message if invalid.
         """
-        return
+        return None
 
     async def transform_value(self, value, datasette):
         """

datasette/csrf.py

@@ -40,12 +40,12 @@ def _origin_tuple(value):
     scheme = (parsed.scheme or "").lower()
     host = (parsed.hostname or "").lower()
     if not scheme or not host:
-        raise ValueError(f"missing scheme or host in {value!r}")
+        raise ValueError("missing scheme or host in {!r}".format(value))
     port = parsed.port  # may raise ValueError on bad ports
     if port is None:
         port = DEFAULT_PORTS.get(scheme)
     if port is None:
-        raise ValueError(f"unknown default port for scheme {scheme!r}")
+        raise ValueError("unknown default port for scheme {!r}".format(scheme))
     return scheme, host, port
 
 
@@ -125,7 +125,9 @@ class CrossOriginProtectionMiddleware:
                 return
             await self._forbid(
                 send,
-                f"Sec-Fetch-Site was {sec_fetch_site!r}, expected 'same-origin' or 'none'",
+                "Sec-Fetch-Site was {!r}, expected 'same-origin' or 'none'".format(
+                    sec_fetch_site
+                ),
             )
             return
 
@@ -139,11 +141,11 @@ class CrossOriginProtectionMiddleware:
         request_scheme = self._request_scheme(scope)
         try:
             origin_tuple = _origin_tuple(origin)
-            expected_tuple = _origin_tuple(f"{request_scheme}://{host}")
+            expected_tuple = _origin_tuple("{}://{}".format(request_scheme, host))
         except ValueError:
             await self._forbid(
                 send,
-                f"Malformed Origin {origin!r} or Host {host!r}",
+                "Malformed Origin {!r} or Host {!r}".format(origin, host),
             )
             return
 
@@ -153,7 +155,7 @@ class CrossOriginProtectionMiddleware:
 
         await self._forbid(
             send,
-            f"Origin {origin!r} does not match Host {host!r}",
+            "Origin {!r} does not match Host {!r}".format(origin, host),
         )
 
     def _request_scheme(self, scope):
@@ -161,8 +163,7 @@ class CrossOriginProtectionMiddleware:
             try:
                 if self.datasette.setting("force_https_urls"):
                     return "https"
-            except Exception:  # noqa: BLE001, S110
+            except Exception:
-                # Settings may not be readable this early; fall back to the ASGI scheme
                 pass
         return scope.get("scheme") or "http"
 

datasette/database.py

@@ -1,35 +1,33 @@
 import asyncio
 import atexit
+from collections import namedtuple
 import inspect
 import os
+from pathlib import Path
 import queue
+import sqlite_utils
 import sys
 import tempfile
 import threading
 import uuid
-from collections import namedtuple
-from pathlib import Path
 
-import sqlite_utils
-
-from .inspect import inspect_hash
 from .tracer import trace
 from .utils import (
     call_with_supported_arguments,
     detect_fts,
     detect_primary_keys,
     detect_spatialite,
-    escape_sqlite,
     get_all_foreign_keys,
     get_outbound_foreign_keys,
     md5_not_usedforsecurity,
-    sqlite3,
     sqlite_timelimit,
-    table_column_details,
+    sqlite3,
     table_columns,
+    table_column_details,
 )
 from .utils.sql_analysis import SQLAnalysis, analyze_sql_tables
-from .utils.sqlite import sqlite_derived_table_dependencies, sqlite_hidden_table_names
+from .utils.sqlite import sqlite_hidden_table_names
+from .inspect import inspect_hash
 
 connections = threading.local()
 
@@ -85,7 +83,6 @@ class Database:
         self.cached_hash = None
         self.cached_size = None
         self._cached_table_counts = None
-        self._cached_derived_table_dependencies = None
         self._write_thread = None
         self._write_queue = None
         self._closed = False
@@ -101,7 +98,9 @@ class Database:
 
     def _check_not_closed(self):
         if self._closed:
-            raise DatasetteClosedError(f"Database {self.name!r} has been closed")
+            raise DatasetteClosedError(
+                "Database {!r} has been closed".format(self.name)
+            )
 
     def _remove_pending_execute_future(self, future):
         with self._pending_execute_futures_lock:
@@ -140,7 +139,7 @@ class Database:
         if write:
             extra_kwargs["isolation_level"] = "IMMEDIATE"
         if self.memory_name:
-            uri = f"file:{self.memory_name}?mode=memory&cache=shared"
+            uri = "file:{}?mode=memory&cache=shared".format(self.memory_name)
             conn = sqlite3.connect(
                 uri, uri=True, check_same_thread=False, **extra_kwargs
             )
@@ -193,20 +192,21 @@ class Database:
             write_thread.join(timeout=10)
             if write_thread.is_alive():
                 sys.stderr.write(
-                    f"Datasette: write thread for {self.name!r} did not exit within 10s\n"
+                    "Datasette: write thread for {!r} did not exit within 10s\n".format(
+                        self.name
+                    )
                 )
                 sys.stderr.flush()
         for future in pending_execute_futures:
             try:
                 future.result()
-            except Exception:  # noqa: BLE001, S110
+            except Exception:
-                # Shutdown teardown - a failed pending write must not block close()
                 pass
         # Close anything still tracked in _all_file_connections
         for connection in self._all_file_connections:
             try:
                 connection.close()
-            except Exception:  # noqa: BLE001, S110
+            except Exception:
                 pass
         self._all_file_connections = []
         # Drop per-thread cached read connections we can reach
@@ -218,13 +218,13 @@ class Database:
         if self._read_connection is not None:
             try:
                 self._read_connection.close()
-            except Exception:  # noqa: BLE001, S110
+            except Exception:
                 pass
             self._read_connection = None
         if self._write_connection is not None:
             try:
                 self._write_connection.close()
-            except Exception:  # noqa: BLE001, S110
+            except Exception:
                 pass
             self._write_connection = None
         if self.is_temp_disk:
@@ -246,34 +246,19 @@ class Database:
         request=None,
         return_all=False,
         returning_limit=EXECUTE_WRITE_RETURNING_LIMIT,
-        transaction=True,
-        time_limit_ms=2000,
     ):
         self._check_not_closed()
         if returning_limit < 0:
             raise ValueError("returning_limit must be >= 0")
 
-        def execute_sql(conn):
+        def _inner(conn):
             cursor = conn.execute(sql, params or [])
             return ExecuteWriteResult.from_cursor(
                 cursor, return_all=return_all, returning_limit=returning_limit
             )
 
-        def _inner(conn):
-            try:
-                if time_limit_ms is None:
-                    return execute_sql(conn)
-                with sqlite_timelimit(conn, time_limit_ms):
-                    return execute_sql(conn)
-            except (sqlite3.OperationalError, sqlite3.DatabaseError) as e:
-                if e.args == ("interrupted",):
-                    raise QueryInterrupted(e, sql, params)
-                raise
-
         with trace("sql", database=self.name, sql=sql.strip(), params=params):
-            results = await self.execute_write_fn(
+            results = await self.execute_write_fn(_inner, block=block, request=request)
-                _inner, block=block, request=request, transaction=transaction
-            )
         return results
 
     async def execute_write_script(self, sql, block=True, request=None):
@@ -363,19 +348,9 @@ class Database:
                 self.ds._prepare_connection(self._write_connection, self.name)
             if transaction:
                 with self._write_connection:
-                    self._write_connection.execute("BEGIN IMMEDIATE")
                     result = fn(self._write_connection)
             else:
                 result = fn(self._write_connection)
-            if not block:
-                # There is no write thread here, so the write has already
-                # finished. Hand back the same (task_id, reply_future) shape
-                # _send_to_write_thread() returns, with the future already
-                # resolved, so the block=False path below is identical in
-                # both modes.
-                reply_future = asyncio.get_running_loop().create_future()
-                reply_future.set_result(result)
-                result = (uuid.uuid4(), reply_future)
         else:
             result = await self._send_to_write_thread(
                 fn, block=block, transaction=transaction
@@ -391,8 +366,7 @@ class Database:
             async def _dispatch_events_after_write():
                 try:
                     await reply_future
-                except Exception:  # noqa: BLE001
+                except Exception:
-                    # The write failed; skip success events regardless of why
                     # if the write failed, don't emit success events
                     return
                 for event in pending_events:
@@ -445,9 +419,11 @@ class Database:
             self._write_thread = threading.Thread(
                 target=self._execute_writes, daemon=True
             )
-            self._write_thread.name = f"_execute_writes for database {self.name}"
+            self._write_thread.name = "_execute_writes for database {}".format(
+                self.name
+            )
             self._write_thread.start()
-        task_id = uuid.uuid4()
+        task_id = uuid.uuid5(uuid.NAMESPACE_DNS, "datasette.io")
         loop = asyncio.get_running_loop()
         reply_future = loop.create_future()
         self._write_queue.put(
@@ -466,8 +442,7 @@ class Database:
         try:
             conn = self.connect(write=True)
             self.ds._prepare_connection(conn, self.name)
-        except Exception as e:  # noqa: BLE001
+        except Exception as e:
-            # Stored and re-raised to whoever queues the next write
             conn_exception = e
         while True:
             task = self._write_queue.get()
@@ -475,8 +450,7 @@ class Database:
                 if conn is not None:
                     try:
                         conn.close()
-                    except Exception:  # noqa: BLE001, S110
+                    except Exception:
-                        # Best-effort close as the write thread exits
                         pass
                 return
             exception = None
@@ -495,21 +469,19 @@ class Database:
                         except ValueError:
                             # Was probably a memory connection
                             pass
-                except Exception as e:  # noqa: BLE001
+                except Exception as e:
-                    # Write thread must survive any task failure or the database wedges
+                    sys.stderr.write("{}\n".format(e))
-                    sys.stderr.write(f"{e}\n")
                     sys.stderr.flush()
                     exception = e
             else:
                 try:
                     if task.transaction:
                         with conn:
-                            conn.execute("BEGIN IMMEDIATE")
                             result = task.fn(conn)
                     else:
                         result = task.fn(conn)
-                except Exception as e:  # noqa: BLE001
+                except Exception as e:
-                    sys.stderr.write(f"{e}\n")
+                    sys.stderr.write("{}\n".format(e))
                     sys.stderr.flush()
                     exception = e
             _deliver_write_result(task, result, exception)
@@ -576,7 +548,9 @@ class Database:
                         raise QueryInterrupted(e, sql, params)
                     if log_sql_errors:
                         sys.stderr.write(
-                            f"ERROR: conn={conn}, sql = {sql!r}, params = {params}: {e}\n"
+                            "ERROR: conn={}, sql = {}, params = {}: {}\n".format(
+                                conn, repr(sql), params, e
+                            )
                         )
                         sys.stderr.flush()
                     raise
@@ -629,7 +603,7 @@ class Database:
             try:
                 table_count = (
                     await self.execute(
-                        f"select count(*) from (select * from {escape_sqlite(table)} limit {self.count_limit + 1})",
+                        f"select count(*) from (select * from [{table}] limit {self.count_limit + 1})",
                         custom_time_limit=limit,
                     )
                 ).rows[0][0]
@@ -733,9 +707,9 @@ class Database:
             column_names
             and len(column_names) == 2
             and ("id" in column_names or "pk" in column_names)
-            and set(column_names) != {"id", "pk"}
+            and not set(column_names) == {"id", "pk"}
         ):
-            return next(c for c in column_names if c not in ("id", "pk"))
+            return [c for c in column_names if c not in ("id", "pk")][0]
         # Couldn't find a label:
         return None
 
@@ -781,17 +755,6 @@ class Database:
 
         return hidden_tables
 
-    async def derived_table_dependencies(self):
-        """Return implementation tables and the tables they derive from."""
-        schema_version = (await self.execute("PRAGMA schema_version")).first()[0]
-        if (
-            self._cached_derived_table_dependencies is None
-            or self._cached_derived_table_dependencies[0] != schema_version
-        ):
-            dependencies = await self.execute_fn(sqlite_derived_table_dependencies)
-            self._cached_derived_table_dependencies = (schema_version, dependencies)
-        return self._cached_derived_table_dependencies[1]
-
     async def view_names(self):
         results = await self.execute("select name from sqlite_master where type='view'")
         return [r[0] for r in results.rows]
@@ -888,10 +851,10 @@ def _apply_write_wrapper(fn, wrapper_factory, track_event):
 class WriteTask:
     __slots__ = (
         "fn",
-        "isolated_connection",
+        "task_id",
         "loop",
         "reply_future",
-        "task_id",
+        "isolated_connection",
         "transaction",
     )
 
@@ -932,7 +895,7 @@ class QueryInterrupted(Exception):
         self.params = params
 
     def __str__(self):
-        return f"QueryInterrupted: {self.e}"
+        return "QueryInterrupted: {}".format(self.e)
 
 
 class MultipleValues(Exception):

datasette/default_actions.py

@@ -2,8 +2,8 @@ from datasette import hookimpl
 from datasette.permissions import Action
 from datasette.resources import (
     DatabaseResource,
-    QueryResource,
     TableResource,
+    QueryResource,
 )
 
 

datasette/default_column_types.py

@@ -6,17 +6,6 @@ import markupsafe
 from datasette import hookimpl
 from datasette.column_types import ColumnType, SQLiteType
 
-_HTTP_URL_RE = re.compile(r"https?://\S+", re.IGNORECASE)
-
-
-def _normalize_http_url(value):
-    if not isinstance(value, str):
-        return None
-    normalized = value.strip()
-    if not _HTTP_URL_RE.fullmatch(normalized):
-        return None
-    return normalized
-
 
 class UrlColumnType(ColumnType):
     name = "url"
@@ -26,10 +15,7 @@ class UrlColumnType(ColumnType):
     async def render_cell(self, value, column, table, database, datasette, request):
         if not value or not isinstance(value, str):
             return None
-        normalized = _normalize_http_url(value)
+        escaped = markupsafe.escape(value.strip())
-        if normalized is None:
-            return markupsafe.escape(value.strip())
-        escaped = markupsafe.escape(normalized)
         return markupsafe.Markup(f'<a href="{escaped}">{escaped}</a>')
 
     async def validate(self, value, datasette):
@@ -37,7 +23,7 @@ class UrlColumnType(ColumnType):
             return None
         if not isinstance(value, str):
             return "URL must be a string"
-        if _normalize_http_url(value) is None:
+        if not re.match(r"^https?://\S+$", value.strip()):
             return "Invalid URL"
         return None
 

datasette/default_magic_parameters.py

@@ -1,9 +1,8 @@
+from datasette import hookimpl
 import datetime
 import os
 import time
 
-from datasette import hookimpl
-
 
 def header(key, request):
     key = key.replace("_", "-").encode("utf-8")

datasette/default_permissions/__init__.py

@@ -17,29 +17,18 @@ UNION/INTERSECT operations. The order of evaluation is:
 
 from __future__ import annotations
 
-from .config import config_permissions_sql as config_permissions_sql
-from .defaults import (
-    DEFAULT_ALLOW_ACTIONS as DEFAULT_ALLOW_ACTIONS,
-)
-from .defaults import (
-    default_action_permissions_sql as default_action_permissions_sql,
-)
-from .defaults import (
-    # Avoid "datasette.default_permissions" does not explicitly export attribute
-    default_allow_sql_check as default_allow_sql_check,
-)
-from .defaults import (
-    default_query_permissions_sql as default_query_permissions_sql,
-)
-from .restrictions import (
-    ActorRestrictions as ActorRestrictions,
-)
-
 # Re-export all hooks and public utilities
 from .restrictions import (
     actor_restrictions_sql as actor_restrictions_sql,
-)
-from .restrictions import (
     restrictions_allow_action as restrictions_allow_action,
+    ActorRestrictions as ActorRestrictions,
 )
 from .root import root_user_permissions_sql as root_user_permissions_sql
+from .config import config_permissions_sql as config_permissions_sql
+from .defaults import (
+    # Avoid "datasette.default_permissions" does not explicitly export attribute
+    default_allow_sql_check as default_allow_sql_check,
+    default_action_permissions_sql as default_action_permissions_sql,
+    default_query_permissions_sql as default_query_permissions_sql,
+    DEFAULT_ALLOW_ACTIONS as DEFAULT_ALLOW_ACTIONS,
+)

datasette/default_permissions/config.py

@@ -6,7 +6,7 @@ Applies permission rules from datasette.yaml configuration.
 
 from __future__ import annotations
 
-from typing import TYPE_CHECKING, Any
+from typing import TYPE_CHECKING, Any, List, Optional, Set, Tuple
 
 if TYPE_CHECKING:
     from datasette.app import Datasette
@@ -55,8 +55,8 @@ class ConfigPermissionProcessor:
 
     def __init__(
         self,
-        datasette: Datasette,
+        datasette: "Datasette",
-        actor: dict | None,
+        actor: Optional[dict],
         action: str,
     ):
         self.datasette = datasette
@@ -74,8 +74,8 @@ class ConfigPermissionProcessor:
         self.restrictions = actor.get("_r", {}) if actor else {}
 
         # Pre-compute restriction info for efficiency
-        self.restricted_databases: set[str] = set()
+        self.restricted_databases: Set[str] = set()
-        self.restricted_tables: set[tuple[str, str]] = set()
+        self.restricted_tables: Set[Tuple[str, str]] = set()
 
         if self.has_restrictions:
             self.restricted_databases = {
@@ -92,27 +92,16 @@ class ConfigPermissionProcessor:
             # Tables implicitly reference their parent databases
             self.restricted_databases.update(db for db, _ in self.restricted_tables)
 
-        # Resolve identity keys once per action, rather than scanning the
+    def evaluate_allow_block(self, allow_block: Any) -> Optional[bool]:
-        # restriction allowlist for every configured table's allow block.
-        self.restricted_table_keys = {
-            (db, self.action_obj.normalize_child(table) if self.action_obj else table)
-            for db, table in self.restricted_tables
-        }
-
-    def evaluate_allow_block(self, allow_block: Any) -> bool | None:
         """Evaluate an allow block against the current actor."""
         if allow_block is None:
             return None
-        # Values passed using ``-s permissions.* 1`` or ``0`` are parsed as
-        # integers, but should retain the CLI's boolean 1/0 behavior.
-        if isinstance(allow_block, int) and allow_block in (0, 1):
-            return bool(allow_block)
         return actor_matches_allow(self.actor, allow_block)
 
     def is_in_restriction_allowlist(
         self,
-        parent: str | None,
+        parent: Optional[str],
-        child: str | None,
+        child: Optional[str],
     ) -> bool:
         """Check if resource is allowed by actor restrictions."""
         if not self.has_restrictions:
@@ -132,10 +121,8 @@ class ConfigPermissionProcessor:
         if parent:
             table_restrictions = (self.restrictions.get("r", {}) or {}).get(parent, {})
             if child:
-                child_key = (
+                table_actions = table_restrictions.get(child, [])
-                    self.action_obj.normalize_child(child) if self.action_obj else child
+                if self.action_checks.intersection(table_actions):
-                )
-                if (parent, child_key) in self.restricted_table_keys:
                     return True
             else:
                 # Parent query should proceed if any child in this database is allowlisted
@@ -156,9 +143,9 @@ class ConfigPermissionProcessor:
 
     def add_permissions_rule(
         self,
-        parent: str | None,
+        parent: Optional[str],
-        child: str | None,
+        child: Optional[str],
-        permissions_block: dict | None,
+        permissions_block: Optional[dict],
         scope_desc: str,
     ) -> None:
         """Add a rule from a permissions:{action} block."""
@@ -178,8 +165,8 @@ class ConfigPermissionProcessor:
 
     def add_allow_block_rule(
         self,
-        parent: str | None,
+        parent: Optional[str],
-        child: str | None,
+        child: Optional[str],
         allow_block: Any,
         scope_desc: str,
     ) -> None:
@@ -211,8 +198,8 @@ class ConfigPermissionProcessor:
 
     def _add_restriction_gate_denies(
         self,
-        parent: str | None,
+        parent: Optional[str],
-        child: str | None,
+        child: Optional[str],
         is_allowed: bool,
         scope_desc: str,
     ) -> None:
@@ -244,7 +231,7 @@ class ConfigPermissionProcessor:
                     if db_name == parent:
                         self.collector.add(db_name, table_name, False, reason)
 
-    def process(self) -> PermissionSQL | None:
+    def process(self) -> Optional[PermissionSQL]:
         """Process all config rules and return combined PermissionSQL."""
         self._process_root_permissions()
         self._process_databases()
@@ -434,10 +421,10 @@ class ConfigPermissionProcessor:
 
 @hookimpl(specname="permission_resources_sql")
 async def config_permissions_sql(
-    datasette: Datasette,
+    datasette: "Datasette",
-    actor: dict | None,
+    actor: Optional[dict],
     action: str,
-) -> list[PermissionSQL] | None:
+) -> Optional[List[PermissionSQL]]:
     """
     Apply permission rules from datasette.yaml configuration.
 

datasette/default_permissions/defaults.py

@@ -6,7 +6,7 @@ Provides default allow rules for standard view/execute actions.
 
 from __future__ import annotations
 
-from typing import TYPE_CHECKING
+from typing import TYPE_CHECKING, Optional
 
 if TYPE_CHECKING:
     from datasette.app import Datasette
@@ -29,28 +29,29 @@ DEFAULT_ALLOW_ACTIONS = frozenset(
 
 @hookimpl(specname="permission_resources_sql")
 async def default_allow_sql_check(
-    datasette: Datasette,
+    datasette: "Datasette",
-    actor: dict | None,
+    actor: Optional[dict],
     action: str,
-) -> PermissionSQL | None:
+) -> Optional[PermissionSQL]:
     """
     Enforce the default_allow_sql setting.
 
     When default_allow_sql is false (the default), execute-sql is denied
     unless explicitly allowed by config or other rules.
     """
-    if action == "execute-sql" and not datasette.setting("default_allow_sql"):
+    if action == "execute-sql":
-        return PermissionSQL.deny(reason="default_allow_sql is false")
+        if not datasette.setting("default_allow_sql"):
+            return PermissionSQL.deny(reason="default_allow_sql is false")
 
     return None
 
 
 @hookimpl(specname="permission_resources_sql")
 async def default_action_permissions_sql(
-    datasette: Datasette,
+    datasette: "Datasette",
-    actor: dict | None,
+    actor: Optional[dict],
     action: str,
-) -> PermissionSQL | None:
+) -> Optional[PermissionSQL]:
     """
     Provide default allow rules for standard view/execute actions.
 
@@ -70,10 +71,10 @@ async def default_action_permissions_sql(
 
 @hookimpl(specname="permission_resources_sql")
 async def default_query_permissions_sql(
-    datasette: Datasette,
+    datasette: "Datasette",
-    actor: dict | None,
+    actor: Optional[dict],
     action: str,
-) -> PermissionSQL | None:
+) -> Optional[PermissionSQL]:
     actor_id = actor.get("id") if isinstance(actor, dict) else None
 
     if action not in {"view-query", "update-query", "delete-query"}:

datasette/default_permissions/helpers.py

@@ -5,7 +5,7 @@ Shared helper utilities for default permission implementations.
 from __future__ import annotations
 
 from dataclasses import dataclass
-from typing import TYPE_CHECKING
+from typing import TYPE_CHECKING, List, Optional, Set
 
 if TYPE_CHECKING:
     from datasette.app import Datasette
@@ -13,7 +13,7 @@ if TYPE_CHECKING:
 from datasette.permissions import PermissionSQL
 
 
-def get_action_name_variants(datasette: Datasette, action: str) -> set[str]:
+def get_action_name_variants(datasette: "Datasette", action: str) -> Set[str]:
     """
     Get all name variants for an action (full name and abbreviation).
 
@@ -27,7 +27,7 @@ def get_action_name_variants(datasette: Datasette, action: str) -> set[str]:
     return variants
 
 
-def action_in_list(datasette: Datasette, action: str, action_list: list) -> bool:
+def action_in_list(datasette: "Datasette", action: str, action_list: list) -> bool:
     """Check if an action (or its abbreviation) is in a list."""
     return bool(get_action_name_variants(datasette, action).intersection(action_list))
 
@@ -36,8 +36,8 @@ def action_in_list(datasette: Datasette, action: str, action_list: list) -> bool
 class PermissionRow:
     """A single permission rule row."""
 
-    parent: str | None
+    parent: Optional[str]
-    child: str | None
+    child: Optional[str]
     allow: bool
     reason: str
 
@@ -46,14 +46,14 @@ class PermissionRowCollector:
     """Collects permission rows and converts them to PermissionSQL."""
 
     def __init__(self, prefix: str = "row"):
-        self.rows: list[PermissionRow] = []
+        self.rows: List[PermissionRow] = []
         self.prefix = prefix
 
     def add(
         self,
-        parent: str | None,
+        parent: Optional[str],
-        child: str | None,
+        child: Optional[str],
-        allow: bool | None,
+        allow: Optional[bool],
         reason: str,
         if_not_none: bool = False,
     ) -> None:
@@ -62,7 +62,7 @@ class PermissionRowCollector:
             return
         self.rows.append(PermissionRow(parent, child, allow, reason))
 
-    def to_permission_sql(self) -> PermissionSQL | None:
+    def to_permission_sql(self) -> Optional[PermissionSQL]:
         """Convert collected rows to a PermissionSQL object."""
         if not self.rows:
             return None

datasette/default_permissions/restrictions.py

@@ -8,7 +8,7 @@ contains allowlists of resources the actor can access.
 from __future__ import annotations
 
 from dataclasses import dataclass
-from typing import TYPE_CHECKING
+from typing import TYPE_CHECKING, List, Optional, Set, Tuple
 
 if TYPE_CHECKING:
     from datasette.app import Datasette
@@ -23,12 +23,12 @@ from .helpers import action_in_list, get_action_name_variants
 class ActorRestrictions:
     """Parsed actor restrictions from the _r key."""
 
-    global_actions: list[str]  # _r.a - globally allowed actions
+    global_actions: List[str]  # _r.a - globally allowed actions
     database_actions: dict  # _r.d - {db_name: [actions]}
     table_actions: dict  # _r.r - {db_name: {table: [actions]}}
 
     @classmethod
-    def from_actor(cls, actor: dict | None) -> ActorRestrictions | None:
+    def from_actor(cls, actor: Optional[dict]) -> Optional["ActorRestrictions"]:
         """Parse restrictions from actor dict. Returns None if no restrictions."""
         if not actor:
             return None
@@ -44,11 +44,11 @@ class ActorRestrictions:
             table_actions=restrictions.get("r", {}),
         )
 
-    def is_action_globally_allowed(self, datasette: Datasette, action: str) -> bool:
+    def is_action_globally_allowed(self, datasette: "Datasette", action: str) -> bool:
         """Check if action is in the global allowlist."""
         return action_in_list(datasette, action, self.global_actions)
 
-    def get_allowed_databases(self, datasette: Datasette, action: str) -> set[str]:
+    def get_allowed_databases(self, datasette: "Datasette", action: str) -> Set[str]:
         """Get database names where this action is allowed."""
         allowed = set()
         for db_name, db_actions in self.database_actions.items():
@@ -57,8 +57,8 @@ class ActorRestrictions:
         return allowed
 
     def get_allowed_tables(
-        self, datasette: Datasette, action: str
+        self, datasette: "Datasette", action: str
-    ) -> set[tuple[str, str]]:
+    ) -> Set[Tuple[str, str]]:
         """Get (database, table) pairs where this action is allowed."""
         allowed = set()
         for db_name, tables in self.table_actions.items():
@@ -70,10 +70,10 @@ class ActorRestrictions:
 
 @hookimpl(specname="permission_resources_sql")
 async def actor_restrictions_sql(
-    datasette: Datasette,
+    datasette: "Datasette",
-    actor: dict | None,
+    actor: Optional[dict],
     action: str,
-) -> list[PermissionSQL] | None:
+) -> Optional[List[PermissionSQL]]:
     """
     Handle actor restriction-based permission rules.
 
@@ -140,10 +140,10 @@ async def actor_restrictions_sql(
 
 
 def restrictions_allow_action(
-    datasette: Datasette,
+    datasette: "Datasette",
     restrictions: dict,
     action: str,
-    resource: str | tuple[str, str] | None,
+    resource: Optional[str | Tuple[str, str]],
 ) -> bool:
     """
     Check if restrictions allow the requested action on the requested resource.
@@ -185,15 +185,11 @@ def restrictions_allow_action(
     # Check table/resource level
     if resource is not None and not isinstance(resource, str) and len(resource) == 2:
         database, table = resource
-        action_obj = datasette.actions.get(action)
+        table_allowed = restrictions.get("r", {}).get(database, {}).get(table)
-        normalize = action_obj.normalize_child if action_obj else lambda name: name
+        if table_allowed is not None:
-        for table_name, table_allowed in (
+            assert isinstance(table_allowed, list)
-            restrictions.get("r", {}).get(database, {}).items()
+            if to_check.intersection(table_allowed):
-        ):
+                return True
-            if normalize(table_name) == normalize(table):
-                assert isinstance(table_allowed, list)
-                if to_check.intersection(table_allowed):
-                    return True
 
     # This action is not explicitly allowed, so reject it
     return False

datasette/default_permissions/root.py

@@ -6,7 +6,7 @@ Grants full permissions to the root user when --root flag is used.
 
 from __future__ import annotations
 
-from typing import TYPE_CHECKING
+from typing import TYPE_CHECKING, Optional
 
 if TYPE_CHECKING:
     from datasette.app import Datasette
@@ -17,9 +17,9 @@ from datasette.permissions import PermissionSQL
 
 @hookimpl(specname="permission_resources_sql")
 async def root_user_permissions_sql(
-    datasette: Datasette,
+    datasette: "Datasette",
-    actor: dict | None,
+    actor: Optional[dict],
-) -> PermissionSQL | None:
+) -> Optional[PermissionSQL]:
     """
     Grant root user full permissions when --root flag is used.
     """

datasette/default_permissions/sqlite_statistics.py

@@ -1,25 +0,0 @@
-"""Default table-access policy for SQLite optimizer statistics."""
-
-import json
-
-from datasette import hookimpl
-from datasette.permissions import PermissionSQL
-
-
-@hookimpl
-def permission_resources_sql(action):
-    if action != "view-table":
-        return None
-    return PermissionSQL(
-        sql="""
-            SELECT database_name AS parent, value AS child, 0 AS allow,
-                'SQLite statistics tables are denied by default' AS reason
-            FROM catalog_databases
-            CROSS JOIN json_each(:sqlite_statistics_names)
-        """,
-        params={
-            "sqlite_statistics_names": json.dumps(
-                ["sqlite_stat1", "sqlite_stat2", "sqlite_stat3", "sqlite_stat4"]
-            )
-        },
-    )

datasette/default_permissions/tokens.py

@@ -7,7 +7,7 @@ to datasette.verify_token() so all registered handlers are tried.
 
 from __future__ import annotations
 
-from typing import TYPE_CHECKING
+from typing import TYPE_CHECKING, Optional
 
 if TYPE_CHECKING:
     from datasette.app import Datasette
@@ -17,13 +17,15 @@ from datasette.tokens import SignedTokenHandler
 
 
 @hookimpl
-def register_token_handler(datasette: Datasette):
+def register_token_handler(datasette: "Datasette"):
     """Register the default signed token handler."""
     return SignedTokenHandler()
 
 
 @hookimpl(specname="actor_from_request")
-async def actor_from_signed_api_token(datasette: Datasette, request) -> dict | None:
+async def actor_from_signed_api_token(
+    datasette: "Datasette", request
+) -> Optional[dict]:
     """
     Authenticate requests using API tokens by delegating to all registered
     token handlers via datasette.verify_token().

datasette/default_table_actions.py

@@ -20,7 +20,7 @@ def table_actions(datasette, actor, database, table, request):
                 "label": "Alter table",
                 "description": "Change columns and primary key for this table.",
                 "attrs": {
-                    "aria-label": f"Alter table {table}",
+                    "aria-label": "Alter table {}".format(table),
                     "data-table-action": "alter-table",
                 },
             }

datasette/events.py

@@ -1,8 +1,7 @@
 from abc import ABC, abstractproperty
 from dataclasses import asdict, dataclass, field
-from datetime import datetime, timezone
-
 from datasette.hookspecs import hookimpl
+from datetime import datetime, timezone
 
 
 @dataclass

datasette/facets.py

@@ -1,13 +1,12 @@
 import json
 import urllib
-
 from datasette import hookimpl
 from datasette.database import QueryInterrupted
 from datasette.utils import (
-    detect_json1,
     escape_sqlite,
     path_with_added_args,
     path_with_removed_args,
+    detect_json1,
     sqlite3,
 )
 
@@ -31,7 +30,7 @@ def load_facet_configs(request, table_config):
             assert (
                 len(facet_config.values()) == 1
             ), "Metadata config dicts should be {type: config}"
-            type, facet_config = next(iter(facet_config.items()))
+            type, facet_config = list(facet_config.items())[0]
             if isinstance(facet_config, str):
                 facet_config = {"simple": facet_config}
         facet_configs.setdefault(type, []).append(
@@ -86,7 +85,7 @@ class Facet:
         self.database = database
         # For foreign key expansion. Can be None for e.g. stored SQL queries:
         self.table = table
-        self.sql = sql or f"select * from {escape_sqlite(table)}"
+        self.sql = sql or f"select * from [{table}]"
         self.params = params or []
         self.table_config = table_config
         # row_count can be None, in which case we calculate it ourselves:
@@ -161,13 +160,18 @@ class ColumnFacet(Facet):
         for column in columns:
             if column in already_enabled:
                 continue
-            suggested_facet_sql = f"""
+            suggested_facet_sql = """
-                with limited as (select * from ({self.sql}) limit {self.suggest_consider})
+                with limited as (select * from ({sql}) limit {suggest_consider})
-                select {escape_sqlite(column)} as value, count(*) as n from limited
+                select {column} as value, count(*) as n from limited
                 where value is not null
                 group by value
-                limit {facet_size + 1}
+                limit {limit}
-            """
+            """.format(
+                column=escape_sqlite(column),
+                sql=self.sql,
+                limit=facet_size + 1,
+                suggest_consider=self.suggest_consider,
+            )
             distinct_values = None
             try:
                 distinct_values = await self.ds.execute(
@@ -263,7 +267,7 @@ class ColumnFacet(Facet):
                 for row in facet_rows:
                     column_qs = column
                     if column.startswith("_"):
-                        column_qs = f"{column}__exact"
+                        column_qs = "{}__exact".format(column)
                     selected = (column_qs, str(row["value"])) in qs_pairs
                     if selected:
                         toggle_path = path_with_removed_args(
@@ -338,12 +342,12 @@ class ArrayFacet(Facet):
                         for v in await self.ds.execute(
                             self.database,
                             (
-                                f"select {escape_sqlite(column)} from ({self.sql}) "
+                                "select {column} from ({sql}) "
-                                f"where {escape_sqlite(column)} is not null "
+                                "where {column} is not null "
-                                f"and {escape_sqlite(column)} != '' "
+                                "and {column} != '' "
-                                f"and json_array_length({escape_sqlite(column)}) > 0 "
+                                "and json_array_length({column}) > 0 "
                                 "limit 100"
-                            ),
+                            ).format(column=escape_sqlite(column), sql=self.sql),
                             self.params,
                             truncate=False,
                             custom_time_limit=self.ds.setting(
@@ -384,14 +388,14 @@ class ArrayFacet(Facet):
             source = source_and_config["source"]
             column = config.get("column") or config["simple"]
             # https://github.com/simonw/datasette/issues/448
-            facet_sql = f"""
+            facet_sql = """
-                with inner as ({self.sql}),
+                with inner as ({sql}),
                 deduped_array_items as (
                     select
                         distinct j.value,
                         inner.*
                     from
-                        json_each([inner].{escape_sqlite(column)}) j
+                        json_each([inner].{col}) j
                         join inner
                 )
                 select
@@ -402,8 +406,12 @@ class ArrayFacet(Facet):
                 group by
                     value
                 order by
-                    count(*) desc, value limit {facet_size + 1}
+                    count(*) desc, value limit {limit}
-            """
+            """.format(
+                col=escape_sqlite(column),
+                sql=self.sql,
+                limit=facet_size + 1,
+            )
             try:
                 facet_rows_results = await self.ds.execute(
                     self.database,

datasette/filters.py

@@ -1,11 +1,8 @@
-import json
-from typing import ClassVar
-
 from datasette import hookimpl
-from datasette.resources import DatabaseResource, TableResource
+from datasette.resources import DatabaseResource
-from datasette.utils.asgi import BadRequest
 from datasette.views.base import DatasetteError
-
+from datasette.utils.asgi import BadRequest
+import json
 from .utils import detect_json1, escape_sqlite, path_with_removed_args
 
 
@@ -51,20 +48,13 @@ def search_filters(request, database, table, datasette):
         human_descriptions = []
         extra_context = {}
 
-        # Figure out which trusted fts_table to use. Query string parameters can
+        # Figure out which fts_table to use
-        # repeat this mapping (for backwards compatibility), but must not select
-        # a different table or primary key.
         table_metadata = await datasette.table_config(database, table)
         db = datasette.get_database(database)
-        fts_table = table_metadata.get("fts_table")
+        fts_table = request.args.get("_fts_table")
+        fts_table = fts_table or table_metadata.get("fts_table")
         fts_table = fts_table or await db.fts_table(table)
-        fts_pk = table_metadata.get("fts_pk", "rowid")
+        fts_pk = request.args.get("_fts_pk", table_metadata.get("fts_pk", "rowid"))
-        requested_fts_table = request.args.get("_fts_table")
-        requested_fts_pk = request.args.get("_fts_pk")
-        if (requested_fts_table and requested_fts_table != fts_table) or (
-            requested_fts_pk and requested_fts_pk != fts_pk
-        ):
-            raise BadRequest("Invalid _fts_table or _fts_pk")
         search_args = {
             key: request.args[key]
             for key in request.args
@@ -82,11 +72,6 @@ def search_filters(request, database, table, datasette):
         extra_context["supports_search"] = bool(fts_table)
 
         if fts_table and search_args:
-            await datasette.ensure_permission(
-                action="view-table",
-                resource=TableResource(database=database, table=fts_table),
-                actor=request.actor,
-            )
             if "_search" in search_args:
                 # Simple ?_search=xxx
                 search = search_args["_search"]
@@ -114,9 +99,9 @@ def search_filters(request, database, table, datasette):
                             fts_table=escape_sqlite(fts_table),
                             search_col=escape_sqlite(search_col),
                             match_clause=(
-                                f":search_{i}"
+                                ":search_{}".format(i)
                                 if search_mode_raw
-                                else f"escape_fts(:search_{i})"
+                                else "escape_fts(:search_{})".format(i)
                             ),
                         )
                     )
@@ -147,18 +132,13 @@ def through_filters(request, database, table, datasette):
                 through_table = through_data["table"]
                 other_column = through_data["column"]
                 value = through_data["value"]
-                await datasette.ensure_permission(
-                    action="view-table",
-                    resource=TableResource(database=database, table=through_table),
-                    actor=request.actor,
-                )
                 db = datasette.get_database(database)
                 outgoing_foreign_keys = await db.foreign_keys_for_table(through_table)
-                fk_to_us = next(
+                try:
-                    (fk for fk in outgoing_foreign_keys if fk["other_table"] == table),
+                    fk_to_us = [
-                    None,
+                        fk for fk in outgoing_foreign_keys if fk["other_table"] == table
-                )
+                    ][0]
-                if fk_to_us is None:
+                except IndexError:
                     raise DatasetteError(
                         "Invalid _through - could not find corresponding foreign key"
                     )
@@ -226,14 +206,10 @@ class TemplatedFilter(Filter):
         if self.numeric and converted.isdigit():
             converted = int(converted)
         if self.no_argument:
-            kwargs = {"c": _quote_sqlite_identifier(column)}
+            kwargs = {"c": column}
             converted = None
         else:
-            kwargs = {
+            kwargs = {"c": column, "p": f"p{param_counter}", "t": table}
-                "c": _quote_sqlite_identifier(column),
-                "p": f"p{param_counter}",
-                "t": _quote_sqlite_identifier(table),
-            }
         return self.sql_template.format(**kwargs), converted
 
     def human_clause(self, column, value):
@@ -247,14 +223,6 @@ class TemplatedFilter(Filter):
             return template.format(c=column, v=value)
 
 
-def _quote_sqlite_identifier(identifier):
-    # Preserve the historic always-quoted SQL generated by TemplatedFilter.
-    escaped = escape_sqlite(identifier)
-    if escaped == identifier:
-        return f'"{identifier}"'
-    return escaped
-
-
 class InFilter(Filter):
     key = "in"
     display = "in"
@@ -296,56 +264,56 @@ class Filters:
             TemplatedFilter(
                 "exact",
                 "=",
-                "{c} = :{p}",
+                '"{c}" = :{p}',
                 lambda c, v: "{c} = {v}" if v.isdigit() else '{c} = "{v}"',
             ),
             TemplatedFilter(
                 "not",
                 "!=",
-                "{c} != :{p}",
+                '"{c}" != :{p}',
                 lambda c, v: "{c} != {v}" if v.isdigit() else '{c} != "{v}"',
             ),
             TemplatedFilter(
                 "contains",
                 "contains",
-                "{c} like :{p}",
+                '"{c}" like :{p}',
                 '{c} contains "{v}"',
                 format="%{}%",
             ),
             TemplatedFilter(
                 "notcontains",
                 "does not contain",
-                "{c} not like :{p}",
+                '"{c}" not like :{p}',
                 '{c} does not contain "{v}"',
                 format="%{}%",
             ),
             TemplatedFilter(
                 "endswith",
                 "ends with",
-                "{c} like :{p}",
+                '"{c}" like :{p}',
                 '{c} ends with "{v}"',
                 format="%{}",
             ),
             TemplatedFilter(
                 "startswith",
                 "starts with",
-                "{c} like :{p}",
+                '"{c}" like :{p}',
                 '{c} starts with "{v}"',
                 format="{}%",
             ),
-            TemplatedFilter("gt", ">", "{c} > :{p}", "{c} > {v}", numeric=True),
+            TemplatedFilter("gt", ">", '"{c}" > :{p}', "{c} > {v}", numeric=True),
             TemplatedFilter(
-                "gte", "\u2265", "{c} >= :{p}", "{c} \u2265 {v}", numeric=True
+                "gte", "\u2265", '"{c}" >= :{p}', "{c} \u2265 {v}", numeric=True
             ),
-            TemplatedFilter("lt", "<", "{c} < :{p}", "{c} < {v}", numeric=True),
+            TemplatedFilter("lt", "<", '"{c}" < :{p}', "{c} < {v}", numeric=True),
             TemplatedFilter(
-                "lte", "\u2264", "{c} <= :{p}", "{c} \u2264 {v}", numeric=True
+                "lte", "\u2264", '"{c}" <= :{p}', "{c} \u2264 {v}", numeric=True
             ),
-            TemplatedFilter("like", "like", "{c} like :{p}", '{c} like "{v}"'),
+            TemplatedFilter("like", "like", '"{c}" like :{p}', '{c} like "{v}"'),
             TemplatedFilter(
-                "notlike", "not like", "{c} not like :{p}", '{c} not like "{v}"'
+                "notlike", "not like", '"{c}" not like :{p}', '{c} not like "{v}"'
             ),
-            TemplatedFilter("glob", "glob", "{c} glob :{p}", '{c} glob "{v}"'),
+            TemplatedFilter("glob", "glob", '"{c}" glob :{p}', '{c} glob "{v}"'),
             InFilter(),
             NotInFilter(),
         ]
@@ -354,13 +322,13 @@ class Filters:
                 TemplatedFilter(
                     "arraycontains",
                     "array contains",
-                    """:{p} in (select value from json_each({t}.{c}))""",
+                    """:{p} in (select value from json_each([{t}].[{c}]))""",
                     '{c} contains "{v}"',
                 ),
                 TemplatedFilter(
                     "arraynotcontains",
                     "array does not contain",
-                    """:{p} not in (select value from json_each({t}.{c}))""",
+                    """:{p} not in (select value from json_each([{t}].[{c}]))""",
                     '{c} does not contain "{v}"',
                 ),
             ]
@@ -368,34 +336,36 @@ class Filters:
             else []
         )
         + [
-            TemplatedFilter("date", "date", "date({c}) = :{p}", '"{c}" is on date {v}'),
             TemplatedFilter(
-                "isnull", "is null", "{c} is null", "{c} is null", no_argument=True
+                "date", "date", 'date("{c}") = :{p}', '"{c}" is on date {v}'
+            ),
+            TemplatedFilter(
+                "isnull", "is null", '"{c}" is null', "{c} is null", no_argument=True
             ),
             TemplatedFilter(
                 "notnull",
                 "is not null",
-                "{c} is not null",
+                '"{c}" is not null',
                 "{c} is not null",
                 no_argument=True,
             ),
             TemplatedFilter(
                 "isblank",
                 "is blank",
-                "({c} is null or {c} = '')",
+                '("{c}" is null or "{c}" = "")',
                 "{c} is blank",
                 no_argument=True,
             ),
             TemplatedFilter(
                 "notblank",
                 "is not blank",
-                "({c} is not null and {c} != '')",
+                '("{c}" is not null and "{c}" != "")',
                 "{c} is not blank",
                 no_argument=True,
             ),
         ]
     )
-    _filters_by_key: ClassVar[dict[str, Filter]] = {f.key: f for f in _filters}
+    _filters_by_key = {f.key: f for f in _filters}
 
     def __init__(self, pairs):
         self.pairs = pairs

datasette/fixtures.py

@@ -1,10 +1,9 @@
+from datasette.utils.sqlite import sqlite3
+from datasette.utils import documented
 import itertools
 import random
 import string
 
-from datasette.utils import documented
-from datasette.utils.sqlite import sqlite3
-
 __all__ = [
     "EXTRA_DATABASE_SQL",
     "TABLES",
@@ -347,7 +346,9 @@ CREATE VIEW searchable_view_configured_by_metadata AS
     + '\nINSERT INTO no_primary_key VALUES ("RENDER_CELL_DEMO", "a202", "b202", "c202");\n'
     + "\n".join(
         [
-            f'INSERT INTO compound_three_primary_keys VALUES ("{a}", "{b}", "{c}", "{content}");'
+            'INSERT INTO compound_three_primary_keys VALUES ("{a}", "{b}", "{c}", "{content}");'.format(
+                a=a, b=b, c=c, content=content
+            )
             for a, b, c, content in generate_compound_rows(1001)
         ]
     )

datasette/forbidden.py

@@ -1,5 +1,4 @@
-from datasette import Response, hookimpl
+from datasette import hookimpl, Response
-
 from .utils import add_cors_headers
 
 

datasette/handle_exception.py

@@ -1,21 +1,16 @@
-import traceback
+from datasette import hookimpl, Response
-
-from markupsafe import Markup
-
-from datasette import Response, hookimpl
-
 from .utils import add_cors_headers, error_body
 from .utils.asgi import (
     Base400,
 )
 from .views.base import DatasetteError
+from markupsafe import Markup
+import traceback
 
-# Debugger imports are deliberate - they back the "pdb" setting, which drops
-# into a debugger on unhandled exceptions
 try:
-    import ipdb as pdb  # noqa: T100
+    import ipdb as pdb
 except ImportError:
-    import pdb  # noqa: T100
+    import pdb
 
 try:
     import rich
@@ -74,7 +69,7 @@ def handle_exception(datasette, request, exception):
                 dict(
                     info,
                     urls=datasette.urls,
-                    menu_links=list,
+                    menu_links=lambda: [],
                 )
             ),
             status=status,

datasette/hookspecs.py

@@ -1,4 +1,5 @@
-from pluggy import HookimplMarker, HookspecMarker
+from pluggy import HookimplMarker
+from pluggy import HookspecMarker
 
 hookspec = HookspecMarker("datasette")
 hookimpl = HookimplMarker("datasette")

datasette/inspect.py

@@ -1,13 +1,13 @@
 import hashlib
 
 from .utils import (
+    detect_spatialite,
     detect_fts,
     detect_primary_keys,
-    detect_spatialite,
     escape_sqlite,
     get_all_foreign_keys,
-    sqlite3,
     table_columns,
+    sqlite3,
 )
 
 HASH_BLOCK_SIZE = 1024 * 1024
@@ -95,10 +95,10 @@ def inspect_tables(conn, database_metadata):
                 """)
         ]
 
-    for t, table_info in tables.items():
+    for t in tables.keys():
         for hidden_table in hidden_tables:
             if t == hidden_table or t.startswith(hidden_table):
-                table_info["hidden"] = True
+                tables[t]["hidden"] = True
                 continue
 
     return tables

datasette/jump.py

@@ -21,7 +21,7 @@ class JumpSQL:
         search_text: str | None = None,
         display_name: str | None = None,
         item_type: str = "menu",
-    ) -> JumpSQL:
+    ) -> "JumpSQL":
         if search_text is None:
             search_text = " ".join(
                 text for text in (label, display_name, description) if text is not None

datasette/permissions.py

@@ -1,11 +1,7 @@
-import contextvars
 from abc import ABC, abstractmethod
 from dataclasses import dataclass
 from typing import Any, NamedTuple
-
+import contextvars
-_SQLITE_IDENTIFIER_CASE = str.maketrans(
-    "ABCDEFGHIJKLMNOPQRSTUVWXYZ", "abcdefghijklmnopqrstuvwxyz"
-)
 
 # Context variable to track when permission checks should be skipped
 _skip_permission_checks = contextvars.ContextVar(
@@ -53,15 +49,6 @@ class Resource(ABC):
     # Class-level metadata (subclasses must define these)
     name: str = None  # e.g., "table", "database", "model"
     parent_class: type["Resource"] | None = None  # e.g., DatabaseResource for tables
-    case_insensitive_child: bool = False
-
-    @classmethod
-    def normalize_child(cls, child: str | None) -> str | None:
-        """Return a comparison key without changing the resource's display name."""
-        if cls.case_insensitive_child and child is not None:
-            # Match SQLite NOCASE: fold ASCII only, not Unicode lower/casefold.
-            return child.translate(_SQLITE_IDENTIFIER_CASE)
-        return child
 
     # Instance-level optional extra attributes
     reasons: list[str] | None = None
@@ -85,8 +72,8 @@ class Resource(ABC):
         )
 
     def __repr__(self) -> str:
-        return (
+        return "{}(parent={!r}, child={!r})".format(
-            f"{self.__class__.__name__}(parent={self.parent!r}, child={self.child!r})"
+            self.__class__.__name__, self.parent, self.child
         )
 
     @property
@@ -142,6 +129,7 @@ class Resource(ABC):
 
         Must return two columns: parent, child
         """
+        pass
 
 
 class AllowedResource(NamedTuple):
@@ -159,11 +147,6 @@ class Action:
     resource_class: type[Resource] | None = None
     also_requires: str | None = None  # Optional action name that must also be allowed
 
-    def normalize_child(self, child: str | None) -> str | None:
-        if self.resource_class is None:
-            return child
-        return self.resource_class.normalize_child(child)
-
     @property
     def takes_parent(self) -> bool:
         """

datasette/plugins.py

@@ -1,14 +1,20 @@
 import importlib
-import importlib.metadata as importlib_metadata
-import importlib.resources as importlib_resources
 import os
-import sys
-from pprint import pprint
-
 import pluggy
-
+from pprint import pprint
+import sys
 from . import hookspecs
 
+if sys.version_info >= (3, 9):
+    import importlib.resources as importlib_resources
+else:
+    import importlib_resources
+if sys.version_info >= (3, 10):
+    import importlib.metadata as importlib_metadata
+else:
+    import importlib_metadata
+
+
 DEFAULT_PLUGINS = (
     "datasette.publish.heroku",
     "datasette.publish.cloudrun",
@@ -18,7 +24,6 @@ DEFAULT_PLUGINS = (
     "datasette.actor_auth_cookie",
     "datasette.default_permissions",
     "datasette.default_permissions.tokens",
-    "datasette.default_permissions.sqlite_statistics",
     "datasette.default_actions",
     "datasette.default_column_types",
     "datasette.default_magic_parameters",
@@ -80,7 +85,7 @@ if DATASETTE_LOAD_PLUGINS is not None:
                     # Ensure name can be found in plugin_to_distinfo later:
                     pm._plugin_distinfo.append((mod, distribution))
         except importlib_metadata.PackageNotFoundError:
-            sys.stderr.write(f"Plugin {package_name} could not be found\n")
+            sys.stderr.write("Plugin {} could not be found\n".format(package_name))
 
 
 # Load default plugins

datasette/publish/cloudrun.py

@@ -1,17 +1,15 @@
+from datasette import hookimpl
+import click
 import json
 import os
 import re
 from subprocess import CalledProcessError, check_call, check_output
 
-import click
-
-from datasette import hookimpl
-
-from ..utils import temporary_docker_directory
 from .common import (
     add_common_publish_arguments_and_options,
     fail_if_publish_binary_not_installed,
 )
+from ..utils import temporary_docker_directory
 
 
 @hookimpl
@@ -221,7 +219,7 @@ def publish_subcommand(publish):
 
             check_call(
                 "gcloud builds submit --tag {}{}".format(
-                    image_id, f" --timeout {timeout}" if timeout else ""
+                    image_id, " --timeout {}".format(timeout) if timeout else ""
                 ),
                 shell=True,
             )
@@ -233,7 +231,7 @@ def publish_subcommand(publish):
             ("--min-instances", min_instances),
         ):
             if value is not None:
-                extra_deploy_options.append(f"{option} {value}")
+                extra_deploy_options.append("{} {}".format(option, value))
         check_call(
             "gcloud run deploy --allow-unauthenticated --platform=managed --image {} {}{}".format(
                 image_id,
@@ -260,16 +258,24 @@ def _ensure_artifact_registry(artifact_project, artifact_region, artifact_reposi
         ) from exc
 
     describe_cmd = (
-        f"gcloud artifacts repositories describe {artifact_repository} --project {artifact_project} "
+        "gcloud artifacts repositories describe {repo} --project {project} "
-        f"--location {artifact_region} --quiet"
+        "--location {location} --quiet"
+    ).format(
+        repo=artifact_repository,
+        project=artifact_project,
+        location=artifact_region,
     )
     try:
         check_call(describe_cmd, shell=True)
         return
     except CalledProcessError:
         create_cmd = (
-            f"gcloud artifacts repositories create {artifact_repository} --repository-format=docker "
+            "gcloud artifacts repositories create {repo} --repository-format=docker "
-            f'--location {artifact_region} --project {artifact_project} --description "Datasette Cloud Run images" --quiet'
+            '--location {location} --project {project} --description "Datasette Cloud Run images" --quiet'
+        ).format(
+            repo=artifact_repository,
+            location=artifact_region,
+            project=artifact_project,
         )
         try:
             check_call(create_cmd, shell=True)

datasette/publish/common.py

@@ -1,11 +1,9 @@
+from ..utils import StaticMount
+import click
 import os
 import shutil
 import sys
 
-import click
-
-from ..utils import StaticMount
-
 
 def add_common_publish_arguments_and_options(subcommand):
     for decorator in reversed(
@@ -78,7 +76,9 @@ def fail_if_publish_binary_not_installed(binary, publish_target, install_link):
     """Exit (with error message) if ``binary` isn't installed"""
     if not shutil.which(binary):
         click.secho(
-            f"Publishing to {publish_target} requires {binary} to be installed and configured",
+            "Publishing to {publish_target} requires {binary} to be installed and configured".format(
+                publish_target=publish_target, binary=binary
+            ),
             bg="red",
             fg="white",
             bold=True,

datasette/publish/heroku.py

@@ -1,21 +1,19 @@
+from contextlib import contextmanager
+from datasette import hookimpl
+import click
 import json
 import os
 import pathlib
 import shlex
 import shutil
-import tempfile
-from contextlib import contextmanager
 from subprocess import call, check_output
-
+import tempfile
-import click
-
-from datasette import hookimpl
-from datasette.utils import link_or_copy, link_or_copy_directory, parse_metadata
 
 from .common import (
     add_common_publish_arguments_and_options,
     fail_if_publish_binary_not_installed,
 )
+from datasette.utils import link_or_copy, link_or_copy_directory, parse_metadata
 
 
 @hookimpl
@@ -236,7 +234,7 @@ def temporary_heroku_directory(
             extras.extend(["--static", f"{mount_point}:{mount_point}"])
 
         quoted_files = " ".join(
-            [f"-i {shlex.quote(file_name)}" for file_name in file_names]
+            ["-i {}".format(shlex.quote(file_name)) for file_name in file_names]
         )
         procfile_cmd = "web: datasette serve --host 0.0.0.0 {quoted_files} --cors --port $PORT --inspect-file inspect-data.json {extras}".format(
             quoted_files=quoted_files, extras=" ".join(extras)

datasette/renderer.py

@@ -1,13 +1,12 @@
 import json
-
 from datasette.extras import extra_names_from_request
 from datasette.utils import (
-    CustomJSONEncoder,
     error_body,
-    path_from_row_pks,
-    remove_infinites,
-    sqlite3,
     value_as_boolean,
+    remove_infinites,
+    CustomJSONEncoder,
+    path_from_row_pks,
+    sqlite3,
 )
 from datasette.utils.asgi import Response
 

datasette/resources.py

@@ -25,7 +25,6 @@ class TableResource(Resource):
 
     name = "table"
     parent_class = DatabaseResource
-    case_insensitive_child = True
 
     def __init__(self, database: str, table: str):
         super().__init__(parent=database, child=table)

datasette/static/cm-editor.js

@@ -1,4 +1,5 @@
 import { EditorView, basicSetup } from "codemirror";
+import { Compartment } from "@codemirror/state";
 import { keymap } from "@codemirror/view";
 import { sql, SQLDialect } from "@codemirror/lang-sql";
 
@@ -14,12 +15,25 @@ const SQLite = SQLDialect.define({
   operatorChars: "*+-%<>!=&|/~",
   identifierQuotes: '`"',
   specialVar: "@:?$",
+  caseInsensitiveIdentifiers: true,
 });
 
+// Builds the sql() extension from a {schema, defaultTable, defaultSchema} conf object
+function sqlExtension(conf) {
+  return sql({
+    dialect: SQLite,
+    schema: conf.schema,
+    defaultTable: conf.defaultTable,
+    defaultSchema: conf.defaultSchema,
+  });
+}
+
 // Utility function from https://codemirror.net/docs/migration/
 export function editorFromTextArea(textarea, conf = {}) {
-  // This could also be configured with a set of tables and columns for better autocomplete:
+  // Wraps the sql() extension so it can be swapped out later via view.updateSchema()
-  // https://github.com/codemirror/lang-sql#user-content-sqlconfig.tables
+  // https://codemirror.net/examples/config/#dynamic-configuration
+  let sqlCompartment = new Compartment();
+
   let view = new EditorView({
     doc: textarea.value,
     extensions: [
@@ -45,16 +59,17 @@ export function editorFromTextArea(textarea, conf = {}) {
       // Meta-Enter from running
       basicSetup,
       EditorView.lineWrapping,
-      sql({
+      sqlCompartment.of(sqlExtension(conf)),
-        dialect: SQLite,
-        schema: conf.schema,
-        tables: conf.tables,
-        defaultTableName: conf.defaultTableName,
-        defaultSchemaName: conf.defaultSchemaName,
-      }),
     ],
   });
 
+  // Allows callers (and plugins) to update the schema/defaultTable/defaultSchema
+  // used for autocomplete after the editor has already been created.
+  view.updateSchema = (conf2) =>
+    view.dispatch({
+      effects: sqlCompartment.reconfigure(sqlExtension(conf2)),
+    });
+
   // Idea taken from https://discuss.codemirror.net/t/resizing-codemirror-6/3265.
   // Using CSS resize: both and scheduling a measurement when the element changes.
   let editorDOM = view.contentDOM.closest(".cm-editor");

datasette/static/column-chooser.js

@@ -472,13 +472,11 @@ class ColumnChooser extends HTMLElement {
           <span class="drag-item-check">
             <input type="checkbox" ${this._checked.has(col) ? "checked" : ""}>
           </span>
-          <span class="drag-item-label"></span>
+          <span class="drag-item-label">${col}</span>
         </label>
         <div class="drop-indicator"></div>
       `;
 
-      li.querySelector(".drag-item-label").textContent = col;
-
       li.querySelector("input").addEventListener("change", (e) => {
         e.target.checked ? this._checked.add(col) : this._checked.delete(col);
         this._updateCounts();

datasette/static/json-format-highlight-1.0.1.js

@@ -0,0 +1,56 @@
+/*
+https://github.com/luyilin/json-format-highlight
+From https://unpkg.com/json-format-highlight@1.0.1/dist/json-format-highlight.js
+MIT Licensed
+*/
+(function (global, factory) {
+  typeof exports === "object" && typeof module !== "undefined"
+    ? (module.exports = factory())
+    : typeof define === "function" && define.amd
+      ? define(factory)
+      : (global.jsonFormatHighlight = factory());
+})(this, function () {
+  "use strict";
+
+  var defaultColors = {
+    keyColor: "dimgray",
+    numberColor: "lightskyblue",
+    stringColor: "lightcoral",
+    trueColor: "lightseagreen",
+    falseColor: "#f66578",
+    nullColor: "cornflowerblue",
+  };
+
+  function index(json, colorOptions) {
+    if (colorOptions === void 0) colorOptions = {};
+
+    if (!json) {
+      return;
+    }
+    if (typeof json !== "string") {
+      json = JSON.stringify(json, null, 2);
+    }
+    var colors = Object.assign({}, defaultColors, colorOptions);
+    json = json.replace(/&/g, "&").replace(/</g, "<").replace(/>/g, ">");
+    return json.replace(
+      /("(\\u[a-zA-Z0-9]{4}|\\[^u]|[^\\"])*"(\s*:)?|\b(true|false|null)\b|-?\d+(?:\.\d*)?(?:[eE][+]?\d+)?)/g,
+      function (match) {
+        var color = colors.numberColor;
+        if (/^"/.test(match)) {
+          color = /:$/.test(match) ? colors.keyColor : colors.stringColor;
+        } else {
+          color = /true/.test(match)
+            ? colors.trueColor
+            : /false/.test(match)
+              ? colors.falseColor
+              : /null/.test(match)
+                ? colors.nullColor
+                : color;
+        }
+        return '<span style="color: ' + color + '">' + match + "</span>";
+      },
+    );
+  }
+
+  return index;
+});

datasette/stored_queries.py

@@ -1,9 +1,8 @@
 from __future__ import annotations
 
-import json
-from collections.abc import Iterable
 from dataclasses import dataclass
-from typing import Any
+import json
+from typing import Any, Iterable
 
 from .utils import tilde_encode, urlsafe_components
 
@@ -387,7 +386,7 @@ async def count_queries(
                 OR q.sql LIKE :query_search
             )
             """)
-        params["query_search"] = f"%{q}%"
+        params["query_search"] = "%{}%".format(q)
     if is_write is not None:
         where_clauses.append("q.is_write = :query_is_write")
         params["query_is_write"] = int(bool(is_write))
@@ -463,7 +462,7 @@ async def list_queries(
         except ValueError:
             components = []
         if database is None and len(components) == 3:
-            where_clauses.append(f"""
+            where_clauses.append("""
                 (
                     q.database_name > :cursor_database
                     OR (
@@ -477,12 +476,12 @@ async def list_queries(
                         )
                     )
                 )
-                """)
+                """.format(sort_key_sql=sort_key_sql))
             params["cursor_database"] = components[0]
             params["cursor_sort_key"] = components[1]
             params["cursor_name"] = components[2]
         elif database is not None and len(components) == 2:
-            where_clauses.append(f"""
+            where_clauses.append("""
                 (
                     {sort_key_sql} > :cursor_sort_key
                     OR (
@@ -490,7 +489,7 @@ async def list_queries(
                         AND q.name > :cursor_name
                     )
                 )
-                """)
+                """.format(sort_key_sql=sort_key_sql))
             params["cursor_sort_key"] = components[0]
             params["cursor_name"] = components[1]
 
@@ -503,7 +502,7 @@ async def list_queries(
                 OR q.sql LIKE :query_search
             )
             """)
-        params["query_search"] = f"%{q}%"
+        params["query_search"] = "%{}%".format(q)
     if is_write is not None:
         where_clauses.append("q.is_write = :query_is_write")
         params["query_is_write"] = int(bool(is_write))

datasette/templates/_codemirror.html

@@ -1,5 +1,5 @@
 <script src="{{ static('sql-formatter-2.3.3.min.js') }}" defer></script>
-<script src="{{ static('cm-editor-6.0.1.bundle.js') }}"></script>
+<script src="{{ static('cm-editor.bundle.js') }}"></script>
 <style>
   .cm-editor {
     resize: both;

datasette/templates/_codemirror_foot.html

@@ -15,6 +15,9 @@
     if (sqlInput) {
       var editor = (window.editor = cm.editorFromTextArea(sqlInput, {
         schema,
+        {% if default_table is defined and default_table %}
+        defaultTable: {{ default_table|tojson }},
+        {% endif %}
       }));
       if (sqlFormat) {
         sqlFormat.addEventListener("click", (ev) => {

datasette/templates/_permission_ui_styles.html

@@ -6,20 +6,8 @@
     padding: 1.5em;
     margin-bottom: 2em;
 }
-.permission-form form {
-    max-width: 60rem;
-}
-.permission-form-grid {
-    display: grid;
-    gap: 1.5rem;
-    grid-template-columns: repeat(2, minmax(0, 1fr));
-}
-.permission-form-result {
-    margin-top: 1rem;
-    max-width: 60rem;
-}
 .form-section {
-    margin-bottom: 1.25em;
+    margin-bottom: 1em;
 }
 .form-section label {
     display: block;
@@ -27,51 +15,22 @@
     font-weight: bold;
 }
 .form-section input[type="text"],
-.form-section input[type="number"],
-.form-section select,
-.permission-textarea {
-    background-color: #fff;
-    border: 1px solid #aaa;
-    border-radius: 4px;
-    box-sizing: border-box;
-    box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.08);
-    color: #222;
-    font-family: inherit;
-    font-size: 1rem;
-    line-height: 1.4;
-    max-width: none;
-    width: 100%;
-}
-.form-section input[type="text"] {
-    height: 3rem;
-    padding: 0.6rem 0.75rem;
-}
-.form-section input[type="number"] {
-    height: 3rem;
-    max-width: 7rem;
-    padding: 0.6rem 0.75rem;
-}
 .form-section select {
-    height: 3rem;
+    width: 100%;
-    padding: 0.6rem 0.75rem;
+    max-width: 500px;
-}
+    padding: 0.5em;
-.permission-textarea {
+    box-sizing: border-box;
-    font-family: monospace;
+    border: 1px solid #ccc;
-    min-height: 12rem;
+    border-radius: 3px;
-    padding: 0.75rem;
-    resize: vertical;
 }
 .form-section input[type="text"]:focus,
-.form-section input[type="number"]:focus,
+.form-section select:focus {
-.form-section select:focus,
+    outline: 2px solid #0066cc;
-.permission-textarea:focus {
     border-color: #0066cc;
-    box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.18);
-    outline: none;
 }
 .form-section small {
     display: block;
-    margin-top: 0.45em;
+    margin-top: 0.3em;
     color: #666;
 }
 .form-actions {
@@ -183,9 +142,4 @@
     text-align: center;
     color: #666;
 }
-@media only screen and (max-width: 576px) {
-    .permission-form-grid {
-        grid-template-columns: minmax(0, 1fr);
-    }
-}
 </style>

datasette/templates/_permissions_debug_tabs.html

@@ -44,10 +44,10 @@
 </style>
 
 <nav class="permissions-debug-tabs">
-    <a href="{{ urls.path('-/check') }}{{ query_string }}" {% if current_tab == "check" %}class="active"{% endif %}>Explain</a>
+    <a href="{{ urls.path('-/permissions') }}" {% if current_tab == "permissions" %}class="active"{% endif %}>Playground</a>
-    <a href="{{ urls.path('-/allowed') }}{{ query_string }}" {% if current_tab == "allowed" %}class="active"{% endif %}>Access map</a>
+    <a href="{{ urls.path('-/check') }}{{ query_string }}" {% if current_tab == "check" %}class="active"{% endif %}>Check</a>
-    <a href="{{ urls.path('-/rules') }}{{ query_string }}" {% if current_tab == "rules" %}class="active"{% endif %}>Rule explorer</a>
+    <a href="{{ urls.path('-/allowed') }}{{ query_string }}" {% if current_tab == "allowed" %}class="active"{% endif %}>Allowed</a>
-    <a href="{{ urls.path('-/permissions') }}" {% if current_tab == "permissions" %}class="active"{% endif %}>Activity</a>
+    <a href="{{ urls.path('-/rules') }}{{ query_string }}" {% if current_tab == "rules" %}class="active"{% endif %}>Rules</a>
     <a href="{{ urls.path('-/actions') }}" {% if current_tab == "actions" %}class="active"{% endif %}>Actions</a>
     <a href="{{ urls.path('-/allow-debug') }}" {% if current_tab == "allow_debug" %}class="active"{% endif %}>Allow debug</a>
 </nav>

datasette/templates/allow_debug.html

@@ -3,11 +3,29 @@
 {% block title %}Debug allow rules{% endblock %}
 
 {% block extra_head %}
-{% include "_permission_ui_styles.html" %}
 <style>
+textarea {
+    height: 10em;
+    width: 95%;
+    box-sizing: border-box;
+    padding: 0.5em;
+    border: 2px dotted black;
+}
+.two-col {
+    display: inline-block;
+    width: 48%;
+}
+.two-col label {
+    width: 48%;
+}
 p.message-warning {
     white-space: pre-wrap;
 }
+@media only screen and (max-width: 576px) {
+    .two-col {
+        width: 100%;
+    }
+}
 </style>
 {% endblock %}
 
@@ -20,28 +38,24 @@ p.message-warning {
 
 <p>Use this tool to try out different actor and allow combinations. See <a href="https://docs.datasette.io/en/stable/authentication.html#defining-permissions-with-allow-blocks">Defining permissions with "allow" blocks</a> for documentation.</p>
 
-<div class="permission-form">
+<form class="core" action="{{ urls.path('-/allow-debug') }}" method="get" style="margin-bottom: 1em">
-    <form class="core" action="{{ urls.path('-/allow-debug') }}" method="get">
+    <div class="two-col">
-        <div class="permission-form-grid">
+        <p><label>Allow block</label></p>
-            <div class="form-section">
+        <textarea name="allow">{{ allow_input }}</textarea>
-                <label for="allow-block">Allow block</label>
+    </div>
-                <textarea class="permission-textarea" id="allow-block" name="allow">{{ allow_input }}</textarea>
+    <div class="two-col">
-            </div>
+        <p><label>Actor</label></p>
-            <div class="form-section">
+        <textarea name="actor">{{ actor_input }}</textarea>
-                <label for="allow-actor">Actor</label>
+    </div>
-                <textarea class="permission-textarea" id="allow-actor" name="actor">{{ actor_input }}</textarea>
+    <div style="margin-top: 1em;">
-            </div>
+        <input type="submit" value="Apply allow block to actor">
-        </div>
+    </div>
-        <div class="form-actions">
+</form>
-            <button type="submit" class="submit-btn">Apply allow block to actor</button>
-        </div>
-    </form>
 
-    {% if error %}<p class="message-warning permission-form-result">{{ error }}</p>{% endif %}
+{% if error %}<p class="message-warning">{{ error }}</p>{% endif %}
 
-    {% if result == "True" %}<p class="message-info permission-form-result">Result: allow</p>{% endif %}
+{% if result == "True" %}<p class="message-info">Result: allow</p>{% endif %}
 
-    {% if result == "False" %}<p class="message-error permission-form-result">Result: deny</p>{% endif %}
+{% if result == "False" %}<p class="message-error">Result: deny</p>{% endif %}
-</div>
 
 {% endblock %}

datasette/templates/api_explorer.html

@@ -3,6 +3,7 @@
 {% block title %}API Explorer{% endblock %}
 
 {% block extra_head %}
+<script src="{{ static('json-format-highlight-1.0.1.js') }}"></script>
 {% endblock %}
 
 {% block content %}
@@ -125,7 +126,7 @@ getForm.addEventListener("submit", (ev) => {
     document.getElementById('response-status').textContent = response.status;
     return response.json();
   }).then((data) => {
-    output.querySelector('pre').textContent = JSON.stringify(data, null, 2);
+    output.querySelector('pre').innerHTML = jsonFormatHighlight(data);
     errorList.style.display = 'none';
   }).catch((error) => {
     alert(error);
@@ -173,7 +174,7 @@ postForm.addEventListener("submit", (ev) => {
     } else {
       errorList.style.display = 'none';
     }
-    output.querySelector('pre').textContent = JSON.stringify(data, null, 2);
+    output.querySelector('pre').innerHTML = jsonFormatHighlight(data);
     output.style.display = 'block';
   }).catch(err => {
     alert("Error: " + err);

datasette/templates/debug_allowed.html

@@ -3,6 +3,7 @@
 {% block title %}Allowed Resources{% endblock %}
 
 {% block extra_head %}
+<script src="{{ static('json-format-highlight-1.0.1.js') }}"></script>
 {% include "_permission_ui_styles.html" %}
 {% include "_debug_common_functions.html" %}
 {% endblock %}
@@ -48,7 +49,7 @@
 
         <div class="form-section">
             <label for="page_size">Page size:</label>
-            <input type="number" id="page_size" name="_size" value="50" min="1" max="200">
+            <input type="number" id="page_size" name="_size" value="50" min="1" max="200" style="max-width: 100px;">
             <small>Number of results per page (max 200)</small>
         </div>
 
@@ -197,7 +198,7 @@ function displayResults(data) {
     }
 
     // Update raw JSON
-    document.getElementById('raw-json').textContent = JSON.stringify(data, null, 2);
+    document.getElementById('raw-json').innerHTML = jsonFormatHighlight(data);
 }
 
 function displayError(data) {
@@ -207,7 +208,7 @@ function displayError(data) {
 
     resultsContent.innerHTML = `<div class="error-message">Error: ${escapeHtml(data.error || 'Unknown error')}</div>`;
 
-    document.getElementById('raw-json').textContent = JSON.stringify(data, null, 2);
+    document.getElementById('raw-json').innerHTML = jsonFormatHighlight(data);
 }
 
 // Disable child input if parent is empty

datasette/templates/debug_check.html

@@ -1,8 +1,9 @@
 {% extends "base.html" %}
 
-{% block title %}Explain a permission decision{% endblock %}
+{% block title %}Permission Check{% endblock %}
 
 {% block extra_head %}
+<script src="{{ static('json-format-highlight-1.0.1.js') }}"></script>
 {% include "_permission_ui_styles.html" %}
 {% include "_debug_common_functions.html" %}
 <style>
@@ -12,35 +13,29 @@
     border-radius: 5px;
 }
 #output.allowed {
-    background-color: #f3fbf4;
+    background-color: #e8f5e9;
     border: 2px solid #4caf50;
 }
 #output.denied {
-    background-color: #fff7f7;
+    background-color: #ffebee;
     border: 2px solid #f44336;
 }
 #output h2 {
     margin-top: 0;
 }
-#output h3 {
+#output .result-badge {
-    margin-bottom: 0.5em;
-}
-#output .result-badge,
-.effect-badge,
-.rule-status {
     display: inline-block;
-    padding: 0.2em 0.5em;
+    padding: 0.3em 0.8em;
     border-radius: 3px;
     font-weight: bold;
+    font-size: 1.1em;
 }
-#output .allowed-badge,
+#output .allowed-badge {
-.effect-allow {
+    background-color: #4caf50;
-    background-color: #2e7d32;
     color: white;
 }
-#output .denied-badge,
+#output .denied-badge {
-.effect-deny {
+    background-color: #f44336;
-    background-color: #c62828;
     color: white;
 }
 .details-section {
@@ -53,130 +48,70 @@
 .details-section dd {
     margin-left: 1em;
 }
-.explanation-section {
-    background: rgba(255, 255, 255, 0.75);
-    border: 1px solid #ddd;
-    border-radius: 4px;
-    margin-top: 1em;
-    padding: 0 1em 1em;
-}
-.rules-table {
-    border-collapse: collapse;
-    width: 100%;
-}
-.rules-table th,
-.rules-table td {
-    border-bottom: 1px solid #ddd;
-    padding: 0.5em;
-    text-align: left;
-    vertical-align: top;
-}
-.rule-status {
-    background: #e8f5e9;
-    color: #1b5e20;
-}
-.rule-ignored {
-    background: #eee;
-    color: #555;
-    font-weight: normal;
-}
-.requirement-allowed {
-    color: #1b5e20;
-}
-.requirement-denied {
-    color: #b71c1c;
-}
-@media only screen and (max-width: 576px) {
-    .rules-table,
-    .rules-table tbody,
-    .rules-table tr,
-    .rules-table td {
-        display: block;
-    }
-    .rules-table thead {
-        display: none;
-    }
-    .rules-table td::before {
-        content: attr(data-label) ": ";
-        font-weight: bold;
-    }
-}
 </style>
 {% endblock %}
 
 {% block content %}
-<h1>Explain a permission decision</h1>
+<h1>Permission check</h1>
 
 {% set current_tab = "check" %}
 {% include "_permissions_debug_tabs.html" %}
 
-<p>Test an actor, action and resource. The result explains which rules matched, which specificity level won, and whether actor restrictions or required actions changed the verdict.</p>
+<p>Use this tool to test permission checks for the current actor. It queries the <code>/-/check.json</code> API endpoint.</p>
+
+{% if request.actor %}
+<p>Current actor: <strong>{{ request.actor.get("id", "anonymous") }}</strong></p>
+{% else %}
+<p>Current actor: <strong>anonymous (not logged in)</strong></p>
+{% endif %}
 
 <div class="permission-form">
-    <form id="check-form" method="get" action="{{ urls.path('-/check') }}">
+    <form id="check-form" method="get" action="{{ urls.path("-/check") }}">
         <div class="form-section">
-            <label for="actor">Actor JSON:</label>
+            <label for="action">Action (permission name):</label>
-            <textarea class="permission-textarea" id="actor" name="actor">{{ actor_json }}</textarea>
-            <small>Use <code>null</code> for an anonymous actor. This actor is simulated; it does not change who you are signed in as.</small>
-        </div>
-
-        <div class="form-section">
-            <label for="action">Action:</label>
             <select id="action" name="action" required>
                 <option value="">Select an action...</option>
-                {% for action in actions %}
+                {% for action_name in sorted_actions %}
-                <option value="{{ action.name }}">{{ action.name }}{% if action.description %} — {{ action.description }}{% endif %}</option>
+                <option value="{{ action_name }}">{{ action_name }}</option>
                 {% endfor %}
             </select>
-            <small id="action-help">The operation to evaluate</small>
+            <small>The permission action to check</small>
         </div>
 
-        <div class="form-section" id="parent-section">
+        <div class="form-section">
-            <label for="parent">Parent resource:</label>
+            <label for="parent">Parent resource (optional):</label>
             <input type="text" id="parent" name="parent" placeholder="e.g., database name">
-            <small>The database or other parent resource</small>
+            <small>For database-level permissions, specify the database name</small>
         </div>
 
-        <div class="form-section" id="child-section">
+        <div class="form-section">
-            <label for="child">Child resource:</label>
+            <label for="child">Child resource (optional):</label>
-            <input type="text" id="child" name="child" placeholder="e.g., table or query name">
+            <input type="text" id="child" name="child" placeholder="e.g., table name">
-            <small>The table, query or other child resource</small>
+            <small>For table-level permissions, specify the table name (requires parent)</small>
         </div>
 
         <div class="form-actions">
-            <button type="submit" class="submit-btn" id="submit-btn">Explain decision</button>
+            <button type="submit" class="submit-btn" id="submit-btn">Check Permission</button>
         </div>
     </form>
 </div>
 
 <div id="output" style="display: none;">
     <h2>Result: <span class="result-badge" id="result-badge"></span></h2>
-    <p id="result-summary"></p>
 
     <dl class="details-section">
-        <dt>Actor:</dt>
-        <dd><code id="result-actor"></code></dd>
         <dt>Action:</dt>
-        <dd><code id="result-action"></code></dd>
+        <dd id="result-action"></dd>
-        <dt>Resource:</dt>
+
-        <dd><code id="result-resource"></code></dd>
+        <dt>Resource Path:</dt>
+        <dd id="result-resource"></dd>
+
+        <dt>Actor ID:</dt>
+        <dd id="result-actor"></dd>
+
+        <div id="additional-details"></div>
     </dl>
 
-    <section class="explanation-section">
-        <h3>Matching rules</h3>
-        <div id="matching-rules"></div>
-    </section>
-
-    <section class="explanation-section" id="restrictions-section">
-        <h3>Actor restrictions</h3>
-        <div id="restriction-results"></div>
-    </section>
-
-    <section class="explanation-section" id="requirements-section">
-        <h3>Required actions</h3>
-        <div id="requirement-results"></div>
-    </section>
-
     <details style="margin-top: 1em;">
         <summary style="cursor: pointer; font-weight: bold;">Raw JSON response</summary>
         <pre id="raw-json" style="margin-top: 1em; padding: 1em; background-color: #f5f5f5; border: 1px solid #ddd; border-radius: 3px; overflow-x: auto;"></pre>
@@ -184,134 +119,152 @@
 </div>
 
 <script>
-const actions = Object.fromEntries({{ actions|tojson }}.map(action => [action.name, action]));
 const form = document.getElementById('check-form');
 const output = document.getElementById('output');
 const submitBtn = document.getElementById('submit-btn');
-const actionSelect = document.getElementById('action');
-
-function updateResourceFields() {
-    const action = actions[actionSelect.value];
-    document.getElementById('parent-section').style.display = action && action.takes_parent ? 'block' : 'none';
-    document.getElementById('child-section').style.display = action && action.takes_child ? 'block' : 'none';
-    let help = action && action.description ? action.description : 'The operation to evaluate';
-    if (action && action.also_requires) {
-        help += `; also requires ${action.also_requires}`;
-    }
-    document.getElementById('action-help').textContent = help;
-}
 
 async function performCheck() {
     submitBtn.disabled = true;
-    submitBtn.textContent = 'Explaining...';
+    submitBtn.textContent = 'Checking...';
-    const params = new URLSearchParams(new FormData(form));
+
+    const formData = new FormData(form);
+    const params = new URLSearchParams();
+
+    for (const [key, value] of formData.entries()) {
+        if (value) {
+            params.append(key, value);
+        }
+    }
 
     try {
         const response = await fetch('{{ urls.path("-/check.json") }}?' + params.toString(), {
-            headers: {'Accept': 'application/json'}
+            method: 'GET',
+            headers: {
+                'Accept': 'application/json',
+            }
         });
+
         const data = await response.json();
+
         if (response.ok) {
             displayResult(data);
         } else {
             displayError(data);
         }
     } catch (error) {
-        displayError({error: error.message});
+        alert('Error: ' + error.message);
     } finally {
         submitBtn.disabled = false;
-        submitBtn.textContent = 'Explain decision';
+        submitBtn.textContent = 'Check Permission';
     }
 }
 
+// Populate form on initial load
+(function() {
+    const params = populateFormFromURL();
+    const action = params.get('action');
+    if (action) {
+        performCheck();
+    }
+})();
+
 function displayResult(data) {
     output.style.display = 'block';
+
+    // Set badge and styling
     const resultBadge = document.getElementById('result-badge');
-    output.className = data.allowed ? 'allowed' : 'denied';
+    if (data.allowed) {
-    resultBadge.className = `result-badge ${data.allowed ? 'allowed-badge' : 'denied-badge'}`;
+        output.className = 'allowed';
-    resultBadge.textContent = data.allowed ? 'ALLOWED ✓' : 'DENIED ✗';
+        resultBadge.className = 'result-badge allowed-badge';
-    document.getElementById('result-summary').textContent = data.explanation.summary;
+        resultBadge.textContent = 'ALLOWED ✓';
-    document.getElementById('result-actor').textContent = data.actor === null ? 'anonymous' : JSON.stringify(data.actor);
+    } else {
-    document.getElementById('result-action').textContent = data.action;
+        output.className = 'denied';
-    document.getElementById('result-resource').textContent = data.resource.path;
+        resultBadge.className = 'result-badge denied-badge';
-    displayRules(data.explanation);
+        resultBadge.textContent = 'DENIED ✗';
-    displayRestrictions(data.explanation.restrictions);
-    displayRequirements(data.explanation.required_actions);
-    document.getElementById('raw-json').textContent = JSON.stringify(data, null, 2);
-}
-
-function displayRules(explanation) {
-    const container = document.getElementById('matching-rules');
-    if (!explanation.matched_rules.length) {
-        container.innerHTML = '<p>No rules matched. Datasette denies access when there is no matching rule.</p>';
-        return;
     }
-    let html = '<table class="rules-table"><thead><tr><th>Effect</th><th>Scope</th><th>Source</th><th>Reason</th><th>Role in decision</th></tr></thead><tbody>';
+
-    for (const rule of explanation.matched_rules) {
+    // Basic details
-        const status = rule.decisive
+    document.getElementById('result-action').textContent = data.action || 'N/A';
-            ? '<span class="rule-status">Decisive</span>'
+    document.getElementById('result-resource').textContent = data.resource?.path || '/';
-            : `<span class="rule-status rule-ignored">${escapeHtml(rule.ignored_because)}</span>`;
+    document.getElementById('result-actor').textContent = data.actor_id || 'anonymous';
-        html += '<tr>';
+
-        html += `<td data-label="Effect"><span class="effect-badge effect-${rule.effect}">${rule.effect.toUpperCase()}</span></td>`;
+    // Additional details
-        html += `<td data-label="Scope">${escapeHtml(rule.scope)}</td>`;
+    const additionalDetails = document.getElementById('additional-details');
-        html += `<td data-label="Source"><code>${escapeHtml(rule.source || 'unknown')}</code></td>`;
+    additionalDetails.innerHTML = '';
-        html += `<td data-label="Reason">${escapeHtml(rule.reason || 'No reason supplied')}</td>`;
+
-        html += `<td data-label="Role in decision">${status}</td>`;
+    if (data.reason !== undefined) {
-        html += '</tr>';
+        const dt = document.createElement('dt');
+        dt.textContent = 'Reason:';
+        const dd = document.createElement('dd');
+        dd.textContent = data.reason || 'N/A';
+        additionalDetails.appendChild(dt);
+        additionalDetails.appendChild(dd);
     }
-    container.innerHTML = html + '</tbody></table>';
-}
 
-function displayRestrictions(restrictions) {
+    if (data.source_plugin !== undefined) {
-    const section = document.getElementById('restrictions-section');
+        const dt = document.createElement('dt');
-    const container = document.getElementById('restriction-results');
+        dt.textContent = 'Source Plugin:';
-    section.style.display = restrictions.length ? 'block' : 'none';
+        const dd = document.createElement('dd');
-    container.innerHTML = restrictions.map(restriction => {
+        dd.textContent = data.source_plugin || 'N/A';
-        const className = restriction.allowed ? 'requirement-allowed' : 'requirement-denied';
+        additionalDetails.appendChild(dt);
-        const verdict = restriction.allowed ? 'INCLUDED ✓' : 'EXCLUDED ✗';
+        additionalDetails.appendChild(dd);
-        return `<p class="${className}"><strong>${verdict}</strong> by <code>${escapeHtml(restriction.source || 'unknown')}</code>: ${escapeHtml(restriction.reason)}</p>`;
+    }
-    }).join('');
-}
 
-function displayRequirements(requirements) {
+    if (data.used_default !== undefined) {
-    const section = document.getElementById('requirements-section');
+        const dt = document.createElement('dt');
-    const container = document.getElementById('requirement-results');
+        dt.textContent = 'Used Default:';
-    section.style.display = requirements.length ? 'block' : 'none';
+        const dd = document.createElement('dd');
-    container.innerHTML = requirements.map(requirement => {
+        dd.textContent = data.used_default ? 'Yes' : 'No';
-        const className = requirement.allowed ? 'requirement-allowed' : 'requirement-denied';
+        additionalDetails.appendChild(dt);
-        const verdict = requirement.allowed ? 'ALLOWED ✓' : 'DENIED ✗';
+        additionalDetails.appendChild(dd);
-        return `<p class="${className}"><strong>${escapeHtml(requirement.action)}: ${verdict}</strong> — ${escapeHtml(requirement.summary)}</p>`;
+    }
-    }).join('');
+
+    if (data.depth !== undefined) {
+        const dt = document.createElement('dt');
+        dt.textContent = 'Depth:';
+        const dd = document.createElement('dd');
+        dd.textContent = data.depth;
+        additionalDetails.appendChild(dt);
+        additionalDetails.appendChild(dd);
+    }
+
+    // Raw JSON
+    document.getElementById('raw-json').innerHTML = jsonFormatHighlight(data);
+
+    // Scroll to output
+    output.scrollIntoView({ behavior: 'smooth', block: 'nearest' });
 }
 
 function displayError(data) {
     output.style.display = 'block';
     output.className = 'denied';
+
     const resultBadge = document.getElementById('result-badge');
     resultBadge.className = 'result-badge denied-badge';
     resultBadge.textContent = 'ERROR';
-    document.getElementById('result-summary').textContent = data.error || 'Unknown error';
+
-    document.getElementById('result-actor').textContent = '—';
+    document.getElementById('result-action').textContent = 'N/A';
-    document.getElementById('result-action').textContent = '—';
+    document.getElementById('result-resource').textContent = 'N/A';
-    document.getElementById('result-resource').textContent = '—';
+    document.getElementById('result-actor').textContent = 'N/A';
-    document.getElementById('matching-rules').innerHTML = '';
+
-    document.getElementById('restrictions-section').style.display = 'none';
+    const additionalDetails = document.getElementById('additional-details');
-    document.getElementById('requirements-section').style.display = 'none';
+    additionalDetails.innerHTML = '<dt>Error:</dt><dd>' + (data.error || 'Unknown error') + '</dd>';
-    document.getElementById('raw-json').textContent = JSON.stringify(data, null, 2);
+
+    document.getElementById('raw-json').innerHTML = jsonFormatHighlight(data);
+
+    output.scrollIntoView({ behavior: 'smooth', block: 'nearest' });
 }
 
-form.addEventListener('submit', event => {
+// Disable child input if parent is empty
-    event.preventDefault();
+const parentInput = document.getElementById('parent');
-    performCheck();
+const childInput = document.getElementById('child');
-});
-actionSelect.addEventListener('change', updateResourceFields);
 
-(function initializeFromUrl() {
+childInput.addEventListener('focus', () => {
-    const params = populateFormFromURL();
+    if (!parentInput.value) {
-    updateResourceFields();
+        alert('Please specify a parent resource first before adding a child resource.');
-    if (params.get('action')) {
+        parentInput.focus();
-        performCheck();
     }
-})();
+});
 </script>
+
 {% endblock %}

datasette/templates/debug_permissions_playground.html

@@ -1,6 +1,6 @@
 {% extends "base.html" %}
 
-{% block title %}Permission activity{% endblock %}
+{% block title %}Debug permissions{% endblock %}
 
 {% block extra_head %}
 {% include "_permission_ui_styles.html" %}
@@ -20,45 +20,60 @@
 .check-action, .check-when, .check-result {
     font-size: 1.3em;
 }
+textarea {
+    height: 10em;
+    width: 95%;
+    box-sizing: border-box;
+    padding: 0.5em;
+    border: 2px dotted black;
+}
+.two-col {
+    display: inline-block;
+    width: 48%;
+}
+.two-col label {
+    width: 48%;
+}
+@media only screen and (max-width: 576px) {
+    .two-col {
+        width: 100%;
+    }
+}
 </style>
 {% endblock %}
 
 {% block content %}
-<h1>Permission activity</h1>
+<h1>Permission playground</h1>
 
 {% set current_tab = "permissions" %}
 {% include "_permissions_debug_tabs.html" %}
 
-<h2>Raw simulator</h2>
+<p>This tool lets you simulate an actor and a permission check for that actor.</p>
-
-<p>This form runs a hypothetical permission check and returns its raw explanation JSON. Use the <a href="{{ urls.path('-/check') }}">Explain tool</a> for a visual explanation of the same decision.</p>
 
 <div class="permission-form">
     <form action="{{ urls.path('-/permissions') }}" id="debug-post" method="post">
-        <div class="permission-form-grid">
+        <div class="two-col">
-            <div>
+            <div class="form-section">
-                <div class="form-section">
+                <label>Actor</label>
-                    <label for="activity-actor">Actor</label>
+                <textarea name="actor">{% if actor_input %}{{ actor_input }}{% else %}{"id": "root"}{% endif %}</textarea>
-                    <textarea class="permission-textarea" id="activity-actor" name="actor">{% if actor_input %}{{ actor_input }}{% else %}{"id": "root"}{% endif %}</textarea>
-                </div>
             </div>
-            <div>
+        </div>
-                <div class="form-section">
+        <div class="two-col" style="vertical-align: top">
-                    <label for="permission">Action</label>
+            <div class="form-section">
-                    <select name="permission" id="permission">
+                <label for="permission">Action</label>
-                        {% for permission in permissions %}
+                <select name="permission" id="permission">
-                            <option value="{{ permission.name }}">{{ permission.name }}</option>
+                    {% for permission in permissions %}
-                        {% endfor %}
+                        <option value="{{ permission.name }}">{{ permission.name }}</option>
-                    </select>
+                    {% endfor %}
-                </div>
+                </select>
-                <div class="form-section">
+            </div>
-                    <label for="resource_1">Parent</label>
+            <div class="form-section">
-                    <input type="text" id="resource_1" name="resource_1" placeholder="e.g., database name">
+                <label for="resource_1">Parent</label>
-                </div>
+                <input type="text" id="resource_1" name="resource_1" placeholder="e.g., database name">
-                <div class="form-section">
+            </div>
-                    <label for="resource_2">Child</label>
+            <div class="form-section">
-                    <input type="text" id="resource_2" name="resource_2" placeholder="e.g., table name">
+                <label for="resource_2">Child</label>
-                </div>
+                <input type="text" id="resource_2" name="resource_2" placeholder="e.g., table name">
             </div>
         </div>
         <div class="form-actions">
@@ -110,7 +125,7 @@ debugPost.addEventListener('submit', function(ev) {
 });
 </script>
 
-<h2>Recent permission checks</h2>
+<h1>Recent permissions checks</h1>
 
 <p>
     {% if filter != "all" %}<a href="?filter=all">All</a>{% else %}<strong>All</strong>{% endif %},

datasette/templates/debug_rules.html

@@ -3,6 +3,7 @@
 {% block title %}Permission Rules{% endblock %}
 
 {% block extra_head %}
+<script src="{{ static('json-format-highlight-1.0.1.js') }}"></script>
 {% include "_permission_ui_styles.html" %}
 {% include "_debug_common_functions.html" %}
 {% endblock %}
@@ -36,7 +37,7 @@
 
         <div class="form-section">
             <label for="page_size">Page size:</label>
-            <input type="number" id="page_size" name="_size" value="50" min="1" max="200">
+            <input type="number" id="page_size" name="_size" value="50" min="1" max="200" style="max-width: 100px;">
             <small>Number of results per page (max 200)</small>
         </div>
 
@@ -184,7 +185,7 @@ function displayResults(data) {
     }
 
     // Update raw JSON
-    document.getElementById('raw-json').textContent = JSON.stringify(data, null, 2);
+    document.getElementById('raw-json').innerHTML = jsonFormatHighlight(data);
 }
 
 function displayError(data) {
@@ -194,7 +195,7 @@ function displayError(data) {
 
     resultsContent.innerHTML = `<div class="error-message">Error: ${escapeHtml(data.error || 'Unknown error')}</div>`;
 
-    document.getElementById('raw-json').textContent = JSON.stringify(data, null, 2);
+    document.getElementById('raw-json').innerHTML = jsonFormatHighlight(data);
 }
 
 </script>

datasette/templates/table.html

@@ -126,7 +126,7 @@
 {% endif %}
 
 {% if query.sql and allow_execute_sql %}
-    <p><a class="not-underlined" title="{{ query.sql }}" href="{{ urls.database(database) }}?{{ {'sql': query.sql}|urlencode|safe }}{% if query.params %}&amp;{{ query.params|urlencode|safe }}{% endif %}">&#x270e; <span class="underlined">View and edit SQL</span></a></p>
+    <p><a class="not-underlined" title="{{ query.sql }}" href="{{ urls.database(database) }}?{{ {'sql': query.sql, '_table': table}|urlencode|safe }}{% if query.params %}&amp;{{ query.params|urlencode|safe }}{% endif %}">&#x270e; <span class="underlined">View and edit SQL</span></a></p>
 {% endif %}
 
 <p class="export-links">This data as {% for name, url in renderers.items() %}<a href="{{ url }}">{{ name }}</a>{{ ", " if not loop.last }}{% endfor %}{% if display_rows %}, <a href="{{ url_csv }}">CSV</a> (<a href="#export">advanced</a>){% endif %}</p>

datasette/tokens.py

@@ -10,7 +10,7 @@ from __future__ import annotations
 
 import dataclasses
 import time
-from typing import TYPE_CHECKING
+from typing import TYPE_CHECKING, Optional
 
 import itsdangerous
 
@@ -50,24 +50,24 @@ class TokenRestrictions:
     database: dict[str, list[str]] = dataclasses.field(default_factory=dict)
     resource: dict[str, dict[str, list[str]]] = dataclasses.field(default_factory=dict)
 
-    def allow_all(self, action: str) -> TokenRestrictions:
+    def allow_all(self, action: str) -> "TokenRestrictions":
         """Allow an action across all databases and resources."""
         self.all.append(action)
         return self
 
-    def allow_database(self, database: str, action: str) -> TokenRestrictions:
+    def allow_database(self, database: str, action: str) -> "TokenRestrictions":
         """Allow an action on a specific database."""
         self.database.setdefault(database, []).append(action)
         return self
 
     def allow_resource(
         self, database: str, resource: str, action: str
-    ) -> TokenRestrictions:
+    ) -> "TokenRestrictions":
         """Allow an action on a specific resource within a database."""
         self.resource.setdefault(database, {}).setdefault(resource, []).append(action)
         return self
 
-    def abbreviated(self, datasette: Datasette) -> dict | None:
+    def abbreviated(self, datasette: "Datasette") -> Optional[dict]:
         """
         Return the abbreviated ``_r`` dictionary shape for this set of
         restrictions, using action abbreviations registered with ``datasette``.
@@ -112,16 +112,16 @@ class TokenHandler:
 
     async def create_token(
         self,
-        datasette: Datasette,
+        datasette: "Datasette",
         actor_id: str,
         *,
-        expires_after: int | None = None,
+        expires_after: Optional[int] = None,
-        restrictions: TokenRestrictions | None = None,
+        restrictions: Optional[TokenRestrictions] = None,
     ) -> str:
         """Create and return a token string for the given actor."""
         raise NotImplementedError
 
-    async def verify_token(self, datasette: Datasette, token: str) -> dict | None:
+    async def verify_token(self, datasette: "Datasette", token: str) -> Optional[dict]:
         """
         Verify a token and return an actor dict.
 
@@ -142,11 +142,11 @@ class SignedTokenHandler(TokenHandler):
 
     async def create_token(
         self,
-        datasette: Datasette,
+        datasette: "Datasette",
         actor_id: str,
         *,
-        expires_after: int | None = None,
+        expires_after: Optional[int] = None,
-        restrictions: TokenRestrictions | None = None,
+        restrictions: Optional[TokenRestrictions] = None,
     ) -> str:
         if not datasette.setting("allow_signed_tokens"):
             raise ValueError(
@@ -163,7 +163,7 @@ class SignedTokenHandler(TokenHandler):
                 token["_r"] = abbreviated
         return "dstok_{}".format(datasette.sign(token, namespace="token"))
 
-    async def verify_token(self, datasette: Datasette, token: str) -> dict | None:
+    async def verify_token(self, datasette: "Datasette", token: str) -> Optional[dict]:
         prefix = "dstok_"
 
         if not token.startswith(prefix):
@@ -200,8 +200,9 @@ class SignedTokenHandler(TokenHandler):
         ):
             duration = max_signed_tokens_ttl
 
-        if duration and time.time() - created > duration:
+        if duration:
-            raise TokenInvalid("Token has expired")
+            if time.time() - created > duration:
+                raise TokenInvalid("Token has expired")
 
         actor = {"id": decoded["a"], "token": "dstok"}
 

datasette/tracer.py

@@ -1,11 +1,10 @@
 import asyncio
-import json
-import time
-import traceback
 from contextlib import contextmanager
 from contextvars import ContextVar
-
 from markupsafe import escape
+import time
+import json
+import traceback
 
 tracers = {}
 
@@ -133,17 +132,17 @@ class AsgiTracer:
                     "num_traces": len(traces),
                     "traces": traces,
                 }
-                content_type = next(
+                try:
-                    (
+                    content_type = [
                         v.decode("utf8")
                         for k, v in response_headers
                         if k.lower() == b"content-type"
-                    ),
+                    ][0]
-                    "",
+                except IndexError:
-                )
+                    content_type = ""
                 if "text/html" in content_type and b"</body>" in accumulated_body:
                     extra = escape(json.dumps(trace_info, indent=2))
-                    extra_html = f"<pre>{extra}</pre></body>".encode()
+                    extra_html = f"<pre>{extra}</pre></body>".encode("utf8")
                     accumulated_body = accumulated_body.replace(b"</body>", extra_html)
                 elif "json" in content_type and accumulated_body.startswith(b"{"):
                     data = json.loads(accumulated_body.decode("utf8"))

datasette/url_builder.py

@@ -1,7 +1,6 @@
+from .utils import tilde_encode, path_with_format, PrefixedUrlString
 import urllib
 
-from .utils import PrefixedUrlString, path_with_format, tilde_encode
-
 
 class Urls:
     def __init__(self, ds):
@@ -9,7 +8,8 @@ class Urls:
 
     def path(self, path, format=None):
         if not isinstance(path, PrefixedUrlString):
-            path = path.removeprefix("/")
+            if path.startswith("/"):
+                path = path[1:]
             path = self.ds.setting("base_url") + path
         if format is not None:
             path = path_with_format(path=path, format=format)
@@ -56,7 +56,6 @@ class Urls:
         return PrefixedUrlString(path)
 
     def row_blob(self, database, table, row_path, column):
-        return (
+        return self.table(database, table) + "/{}.blob?_blob_column={}".format(
-            self.table(database, table)
+            row_path, urllib.parse.quote_plus(column)
-            + f"/{row_path}.blob?_blob_column={urllib.parse.quote_plus(column)}"
         )

datasette/utils/__init__.py

@@ -1,31 +1,29 @@
 import asyncio
-import base64
 import binascii
+from contextlib import contextmanager
+import aiofiles
+import click
+from collections import OrderedDict, namedtuple, Counter
 import copy
 import dataclasses
+import base64
 import hashlib
 import inspect
 import json
-import os
-import re
-import secrets
-import shlex
-import shutil
-import tempfile
-import time
-import types
-import typing
-import urllib
-from collections import Counter, OrderedDict, namedtuple
-from collections.abc import Iterable
-from contextlib import contextmanager
-
-import aiofiles
-import click
 import markupsafe
 import mergedeep
+import os
+import re
+import shlex
+import tempfile
+import typing
+import time
+import types
+import secrets
+import shutil
+from typing import Iterable, List, Tuple
+import urllib
 import yaml
-
 from .shutil_backport import copytree
 from .sqlite import sqlite3, supports_table_xinfo
 
@@ -38,7 +36,7 @@ if typing.TYPE_CHECKING:
 class PaginatedResources:
     """Paginated results from allowed_resources query."""
 
-    resources: list["Resource"]
+    resources: List["Resource"]
     next: str | None  # Keyset token for next page (None if no more results)
     _datasette: typing.Any = dataclasses.field(default=None, repr=False)
     _action: str = dataclasses.field(default=None, repr=False)
@@ -85,132 +83,22 @@ class PaginatedResources:
 
 
 # From https://www.sqlite.org/lang_keywords.html
-reserved_words = {
+reserved_words = set(
-    "abort",
+    (
-    "action",
+        "abort action add after all alter analyze and as asc attach autoincrement "
-    "add",
+        "before begin between by cascade case cast check collate column commit "
-    "after",
+        "conflict constraint create cross current_date current_time "
-    "all",
+        "current_timestamp database default deferrable deferred delete desc detach "
-    "alter",
+        "distinct drop each else end escape except exclusive exists explain fail "
-    "analyze",
+        "for foreign from full glob group having if ignore immediate in index "
-    "and",
+        "indexed initially inner insert instead intersect into is isnull join key "
-    "as",
+        "left like limit match natural no not notnull null of offset on or order "
-    "asc",
+        "outer plan pragma primary query raise recursive references regexp reindex "
-    "attach",
+        "release rename replace restrict right rollback row savepoint select set "
-    "autoincrement",
+        "table temp temporary then to transaction trigger union unique update using "
-    "before",
+        "vacuum values view virtual when where with without"
-    "begin",
+    ).split()
-    "between",
+)
-    "by",
-    "cascade",
-    "case",
-    "cast",
-    "check",
-    "collate",
-    "column",
-    "commit",
-    "conflict",
-    "constraint",
-    "create",
-    "cross",
-    "current_date",
-    "current_time",
-    "current_timestamp",
-    "database",
-    "default",
-    "deferrable",
-    "deferred",
-    "delete",
-    "desc",
-    "detach",
-    "distinct",
-    "drop",
-    "each",
-    "else",
-    "end",
-    "escape",
-    "except",
-    "exclusive",
-    "exists",
-    "explain",
-    "fail",
-    "for",
-    "foreign",
-    "from",
-    "full",
-    "glob",
-    "group",
-    "having",
-    "if",
-    "ignore",
-    "immediate",
-    "in",
-    "index",
-    "indexed",
-    "initially",
-    "inner",
-    "insert",
-    "instead",
-    "intersect",
-    "into",
-    "is",
-    "isnull",
-    "join",
-    "key",
-    "left",
-    "like",
-    "limit",
-    "match",
-    "natural",
-    "no",
-    "not",
-    "notnull",
-    "null",
-    "of",
-    "offset",
-    "on",
-    "or",
-    "order",
-    "outer",
-    "plan",
-    "pragma",
-    "primary",
-    "query",
-    "raise",
-    "recursive",
-    "references",
-    "regexp",
-    "reindex",
-    "release",
-    "rename",
-    "replace",
-    "restrict",
-    "right",
-    "rollback",
-    "row",
-    "savepoint",
-    "select",
-    "set",
-    "table",
-    "temp",
-    "temporary",
-    "then",
-    "to",
-    "transaction",
-    "trigger",
-    "union",
-    "unique",
-    "update",
-    "using",
-    "vacuum",
-    "values",
-    "view",
-    "virtual",
-    "when",
-    "where",
-    "with",
-    "without",
-}
 
 APT_GET_DOCKERFILE_EXTRAS = r"""
 RUN apt-get update && \
@@ -270,7 +158,7 @@ functions_marked_as_documented = []
 
 def documented(fn=None, *, label=None):
     def decorate(fn):
-        fn._datasette_docs_label = label or f"internals_utils_{fn.__name__}"
+        fn._datasette_docs_label = label or "internals_utils_{}".format(fn.__name__)
         functions_marked_as_documented.append(fn)
         return fn
 
@@ -472,7 +360,7 @@ disallawed_sql_res = [
     (
         re.compile(f"pragma(?!_({'|'.join(allowed_pragmas)}))"),
         "Statement contained a disallowed PRAGMA. Allowed pragma functions are {}".format(
-            ", ".join(f"pragma_{pragma}()" for pragma in allowed_pragmas)
+            ", ".join("pragma_{}()".format(pragma) for pragma in allowed_pragmas)
         ),
     )
 ]
@@ -646,7 +534,10 @@ CMD {cmd}""".format(
             else ""
         ),
         environment_variables="\n".join(
-            [f"ENV {key} '{value}'" for key, value in environment_variables.items()]
+            [
+                "ENV {} '{}'".format(key, value)
+                for key, value in environment_variables.items()
+            ]
         ),
         install_from=" ".join(install),
         files=" ".join(files),
@@ -745,11 +636,11 @@ def detect_primary_keys(conn, table):
 
 
 def get_outbound_foreign_keys(conn, table):
-    infos = conn.execute(f"PRAGMA foreign_key_list({escape_sqlite(table)})").fetchall()
+    infos = conn.execute(f"PRAGMA foreign_key_list([{table}])").fetchall()
     fks = []
     for info in infos:
         if info is not None:
-            id, seq, table_name, from_, to_, _on_update, _on_delete, _match = info
+            id, seq, table_name, from_, to_, on_update, on_delete, match = info
             fks.append(
                 {
                     "column": from_,
@@ -820,8 +711,7 @@ def detect_spatialite(conn):
 
 def detect_fts(conn, table):
     """Detect if table has a corresponding FTS virtual table and return it"""
-    sql, params = detect_fts_sql(table)
+    rows = conn.execute(detect_fts_sql(table)).fetchall()
-    rows = conn.execute(sql, params).fetchall()
     if len(rows) == 0:
         return None
     else:
@@ -829,26 +719,18 @@ def detect_fts(conn, table):
 
 
 def detect_fts_sql(table):
-    escaped_table = table.replace("\\", "\\\\").replace("%", "\\%").replace("_", "\\_")
+    return r"""
-    return (
+        select name from sqlite_master
-        r"""
+            where rootpage = 0
-            select name from sqlite_master
+            and (
-                where rootpage = 0
+                sql like '%VIRTUAL TABLE%USING FTS%content="{table}"%'
-                and (
+                or sql like '%VIRTUAL TABLE%USING FTS%content=[{table}]%'
-                    sql like :fts_double_quoted escape char(92)
+                or (
-                    or sql like :fts_bracket_quoted escape char(92)
+                    tbl_name = "{table}"
-                    or (
+                    and sql like '%VIRTUAL TABLE%USING FTS%'
-                        tbl_name = :table
-                        and sql like '%VIRTUAL TABLE%USING FTS%'
-                    )
                 )
-        """,
+            )
-        {
+    """.format(table=table.replace("'", "''"))
-            "fts_double_quoted": f'%VIRTUAL TABLE%USING FTS%content="{escaped_table}"%',
-            "fts_bracket_quoted": f"%VIRTUAL TABLE%USING FTS%content=[{escaped_table}]%",
-            "table": table,
-        },
-    )
 
 
 def detect_json1(conn=None):
@@ -859,7 +741,7 @@ def detect_json1(conn=None):
     try:
         conn.execute("SELECT json('{}')")
         return True
-    except sqlite3.Error:
+    except Exception:
         return False
     finally:
         if close_conn:
@@ -939,7 +821,9 @@ def is_url(value):
     if not value.startswith("http://") and not value.startswith("https://"):
         return False
     # Any whitespace at all is invalid
-    return not whitespace_re.search(value)
+    if whitespace_re.search(value):
+        return False
+    return True
 
 
 css_class_re = re.compile(r"^[a-zA-Z]+[_a-zA-Z0-9-]*$")
@@ -992,9 +876,7 @@ def module_from_path(path, name):
     mod.__file__ = path
     with open(path, "r") as file:
         code = compile(file.read(), path, "exec", dont_inherit=True)
-    # Executing the file is the whole point - this is how --plugins-dir loads
+    exec(code, mod.__dict__)
-    # plugins and how metadata/config .py files are evaluated
-    exec(code, mod.__dict__)  # noqa: S102
     return mod
 
 
@@ -1151,7 +1033,9 @@ def escape_fts(query):
         query += '"'
     bits = _escape_fts_re.split(query)
     bits = [b for b in bits if b and b != '""']
-    return " ".join(f'"{bit}"' if not bit.startswith('"') else bit for bit in bits)
+    return " ".join(
+        '"{}"'.format(bit) if not bit.startswith('"') else bit for bit in bits
+    )
 
 
 class MultiParams:
@@ -1163,7 +1047,7 @@ class MultiParams:
                     data[key], (list, tuple)
                 ), "dictionary data should be a dictionary of key => [list]"
             self._data = data
-        elif isinstance(data, (list, tuple)):
+        elif isinstance(data, list) or isinstance(data, tuple):
             new_data = {}
             for item in data:
                 assert (
@@ -1253,7 +1137,9 @@ def _gather_arguments(fn, kwargs):
     for parameter in parameters:
         if parameter not in kwargs:
             raise TypeError(
-                f"{fn} requires parameters {tuple(parameters)}, missing: {set(parameters) - set(kwargs.keys())}"
+                "{} requires parameters {}, missing: {}".format(
+                    fn, tuple(parameters), set(parameters) - set(kwargs.keys())
+                )
             )
         call_with.append(kwargs[parameter])
     return call_with
@@ -1322,9 +1208,9 @@ def resolve_env_secrets(config, environ):
     """Create copy that recursively replaces {"$env": "NAME"} with values from environ"""
     if isinstance(config, dict):
         if list(config.keys()) == ["$env"]:
-            return environ.get(next(iter(config.values())))
+            return environ.get(list(config.values())[0])
         elif list(config.keys()) == ["$file"]:
-            with open(next(iter(config.values()))) as fp:
+            with open(list(config.values())[0]) as fp:
                 return fp.read()
         else:
             return {
@@ -1420,7 +1306,7 @@ _named_param_re = re.compile(r":(\w+)")
 
 
 @documented
-def named_parameters(sql: str) -> list[str]:
+def named_parameters(sql: str) -> List[str]:
     """
     Given a SQL statement, return a list of named parameters that are used in the statement
 
@@ -1433,7 +1319,7 @@ def named_parameters(sql: str) -> list[str]:
     return _named_param_re.findall(sql)
 
 
-async def derive_named_parameters(db: "Database", sql: str) -> list[str]:
+async def derive_named_parameters(db: "Database", sql: str) -> List[str]:
     """
     This undocumented but stable method exists for backwards compatibility
     with plugins that were using it before it switched to named_parameters()
@@ -1457,9 +1343,9 @@ def parse_size_limit(value, default, maximum, name="_size"):
         if size < 0:
             raise ValueError
     except ValueError:
-        raise ValueError(f"{name} must be a positive integer")
+        raise ValueError("{} must be a positive integer".format(name))
     if size > maximum:
-        raise ValueError(f"{name} must be <= {maximum}")
+        raise ValueError("{} must be <= {}".format(name, maximum))
     return size
 
 
@@ -1517,7 +1403,7 @@ class TildeEncoder(dict):
         elif b == _space:
             res = "+"
         else:
-            res = f"~{b:02X}"
+            res = "~{:02X}".format(b)
         self[b] = res
         return res
 
@@ -1566,13 +1452,7 @@ async def row_sql_params_pks(db, table, pk_values):
     if use_rowid:
         select = "rowid, *"
         pks = ["rowid"]
-    wheres = []
+    wheres = [f'"{pk}"=:p{i}' for i, pk in enumerate(pks)]
-    for i, pk in enumerate(pks):
-        escaped_pk = escape_sqlite(pk)
-        # Preserve the historic always-quoted SQL exposed by _extra=query
-        if escaped_pk == pk:
-            escaped_pk = f'"{pk}"'
-        wheres.append(f"{escaped_pk}=:p{i}")
     sql = f"select {select} from {escape_sqlite(table)} where {' AND '.join(wheres)}"
     params = {}
     for i, pk_value in enumerate(pk_values):
@@ -1618,7 +1498,7 @@ def _combine(base: dict, update: dict) -> dict:
     return base
 
 
-def pairs_to_nested_config(pairs: list[tuple[str, typing.Any]]) -> dict:
+def pairs_to_nested_config(pairs: typing.List[typing.Tuple[str, typing.Any]]) -> dict:
     """
     Parse a list of key-value pairs into a nested dictionary.
     """
@@ -1633,7 +1513,7 @@ def make_slot_function(name, datasette, request, **kwargs):
     from datasette.plugins import pm
 
     method = getattr(pm.hook, name, None)
-    assert method is not None, f"No hook found for {name}"
+    assert method is not None, "No hook found for {}".format(name)
 
     async def inner():
         html_bits = []
@@ -1657,7 +1537,7 @@ def prune_empty_dicts(d: dict):
                 d.pop(key, None)
 
 
-def move_plugins_and_allow(source: dict, destination: dict) -> tuple[dict, dict]:
+def move_plugins_and_allow(source: dict, destination: dict) -> Tuple[dict, dict]:
     """
     Move 'plugins' and 'allow' keys from source to destination dictionary. Creates
     hierarchy in destination if needed. After moving, recursively remove any keys
@@ -1744,7 +1624,7 @@ def redact_keys(original: dict, key_patterns: Iterable) -> dict:
             return {
                 k: (
                     redact(v)
-                    if not any(pattern in k.casefold() for pattern in key_patterns)
+                    if not any(pattern in k for pattern in key_patterns)
                     else "***"
                 )
                 for k, v in data.items()

datasette/utils/actions_sql.py

@@ -29,15 +29,6 @@ from datasette.utils.permissions import gather_permission_sql_from_hooks
 
 if TYPE_CHECKING:
     from datasette.app import Datasette
-    from datasette.permissions import Action
-
-
-def _child_collation(action: "Action") -> str:
-    """Match resource identity without changing the spelling returned by SQL."""
-    resource_class = action.resource_class
-    if resource_class is not None and resource_class.case_insensitive_child:
-        return "NOCASE"
-    return "BINARY"
 
 
 async def build_allowed_resources_sql(
@@ -158,7 +149,6 @@ async def _build_single_action_sql(
         raise ValueError(f"Unknown action: {action}")
 
     # Get base resources SQL from the resource class
-    child_collation = _child_collation(action_obj)
     base_resources_sql = await action_obj.resource_class.resources_sql(
         datasette, actor=actor
     )
@@ -195,7 +185,7 @@ async def _build_single_action_sql(
         if permission_sql.sql is None:
             continue
         rule_sqls.append(f"""
-            SELECT parent, child COLLATE {child_collation} AS child, allow, reason, '{permission_sql.source}' AS source_plugin FROM (
+            SELECT parent, child, allow, reason, '{permission_sql.source}' AS source_plugin FROM (
                 {permission_sql.sql}
             )
             """.strip())
@@ -262,62 +252,88 @@ async def _build_single_action_sql(
                 ]
             )
 
-    # Continue with the cascading logic.
+    # Continue with the cascading logic
-    # Aggregate the RULES by cascade level (small), rather than grouping
-    # base x rules (which scales with the number of resources).
-    def _agg(select_key, where, group_by):
-        parts = [
-            f"  SELECT {select_key}",
-            "         MAX(CASE WHEN allow = 0 THEN 1 ELSE 0 END) AS any_deny,",
-            "         MAX(CASE WHEN allow = 1 THEN 1 ELSE 0 END) AS any_allow,",
-            "         json_group_array(CASE WHEN allow = 0 THEN source_plugin || ': ' || reason END) AS deny_reasons,",
-            "         json_group_array(CASE WHEN allow = 1 THEN source_plugin || ': ' || reason END) AS allow_reasons",
-            f"  FROM all_rules WHERE {where}",
-        ]
-        if group_by:
-            parts.append(f"  GROUP BY {group_by}")
-        return parts
-
     query_parts.extend(
-        ["child_agg AS ("]
+        [
-        + _agg(
+            "child_lvl AS (",
-            "parent, child,",
+            "  SELECT b.parent, b.child,",
-            "parent IS NOT NULL AND child IS NOT NULL",
+            "         MAX(CASE WHEN ar.allow = 0 THEN 1 ELSE 0 END) AS any_deny,",
-            "parent, child",
+            "         MAX(CASE WHEN ar.allow = 1 THEN 1 ELSE 0 END) AS any_allow,",
-        )
+            "         json_group_array(CASE WHEN ar.allow = 0 THEN ar.source_plugin || ': ' || ar.reason END) AS deny_reasons,",
-        + ["),", "parent_agg AS ("]
+            "         json_group_array(CASE WHEN ar.allow = 1 THEN ar.source_plugin || ': ' || ar.reason END) AS allow_reasons",
-        + _agg("parent,", "parent IS NOT NULL AND child IS NULL", "parent")
+            "  FROM base b",
-        + ["),", "global_agg AS ("]
+            "  LEFT JOIN all_rules ar ON ar.parent = b.parent AND ar.child = b.child",
-        + _agg("", "parent IS NULL AND child IS NULL", None)
+            "  GROUP BY b.parent, b.child",
-        + ["),"]
+            "),",
+            "parent_lvl AS (",
+            "  SELECT b.parent, b.child,",
+            "         MAX(CASE WHEN ar.allow = 0 THEN 1 ELSE 0 END) AS any_deny,",
+            "         MAX(CASE WHEN ar.allow = 1 THEN 1 ELSE 0 END) AS any_allow,",
+            "         json_group_array(CASE WHEN ar.allow = 0 THEN ar.source_plugin || ': ' || ar.reason END) AS deny_reasons,",
+            "         json_group_array(CASE WHEN ar.allow = 1 THEN ar.source_plugin || ': ' || ar.reason END) AS allow_reasons",
+            "  FROM base b",
+            "  LEFT JOIN all_rules ar ON ar.parent = b.parent AND ar.child IS NULL",
+            "  GROUP BY b.parent, b.child",
+            "),",
+            "global_lvl AS (",
+            "  SELECT b.parent, b.child,",
+            "         MAX(CASE WHEN ar.allow = 0 THEN 1 ELSE 0 END) AS any_deny,",
+            "         MAX(CASE WHEN ar.allow = 1 THEN 1 ELSE 0 END) AS any_allow,",
+            "         json_group_array(CASE WHEN ar.allow = 0 THEN ar.source_plugin || ': ' || ar.reason END) AS deny_reasons,",
+            "         json_group_array(CASE WHEN ar.allow = 1 THEN ar.source_plugin || ': ' || ar.reason END) AS allow_reasons",
+            "  FROM base b",
+            "  LEFT JOIN all_rules ar ON ar.parent IS NULL AND ar.child IS NULL",
+            "  GROUP BY b.parent, b.child",
+            "),",
+        ]
     )
 
     # Add anonymous decision logic if needed
     if include_is_private:
-
-        def _anon_agg(select_key, where, group_by):
-            parts = [
-                f"  SELECT {select_key}",
-                "         MAX(CASE WHEN allow = 0 THEN 1 ELSE 0 END) AS any_deny,",
-                "         MAX(CASE WHEN allow = 1 THEN 1 ELSE 0 END) AS any_allow",
-                f"  FROM anon_rules WHERE {where}",
-            ]
-            if group_by:
-                parts.append(f"  GROUP BY {group_by}")
-            return parts
-
         query_parts.extend(
-            ["anon_child_agg AS ("]
+            [
-            + _anon_agg(
+                "anon_child_lvl AS (",
-                f"parent, child COLLATE {child_collation} AS child,",
+                "  SELECT b.parent, b.child,",
-                "parent IS NOT NULL AND child IS NOT NULL",
+                "         MAX(CASE WHEN ar.allow = 0 THEN 1 ELSE 0 END) AS any_deny,",
-                f"parent, child COLLATE {child_collation}",
+                "         MAX(CASE WHEN ar.allow = 1 THEN 1 ELSE 0 END) AS any_allow",
-            )
+                "  FROM base b",
-            + ["),", "anon_parent_agg AS ("]
+                "  LEFT JOIN anon_rules ar ON ar.parent = b.parent AND ar.child = b.child",
-            + _anon_agg("parent,", "parent IS NOT NULL AND child IS NULL", "parent")
+                "  GROUP BY b.parent, b.child",
-            + ["),", "anon_global_agg AS ("]
+                "),",
-            + _anon_agg("", "parent IS NULL AND child IS NULL", None)
+                "anon_parent_lvl AS (",
-            + ["),"]
+                "  SELECT b.parent, b.child,",
+                "         MAX(CASE WHEN ar.allow = 0 THEN 1 ELSE 0 END) AS any_deny,",
+                "         MAX(CASE WHEN ar.allow = 1 THEN 1 ELSE 0 END) AS any_allow",
+                "  FROM base b",
+                "  LEFT JOIN anon_rules ar ON ar.parent = b.parent AND ar.child IS NULL",
+                "  GROUP BY b.parent, b.child",
+                "),",
+                "anon_global_lvl AS (",
+                "  SELECT b.parent, b.child,",
+                "         MAX(CASE WHEN ar.allow = 0 THEN 1 ELSE 0 END) AS any_deny,",
+                "         MAX(CASE WHEN ar.allow = 1 THEN 1 ELSE 0 END) AS any_allow",
+                "  FROM base b",
+                "  LEFT JOIN anon_rules ar ON ar.parent IS NULL AND ar.child IS NULL",
+                "  GROUP BY b.parent, b.child",
+                "),",
+                "anon_decisions AS (",
+                "  SELECT",
+                "    b.parent, b.child,",
+                "    CASE",
+                "      WHEN acl.any_deny = 1 THEN 0",
+                "      WHEN acl.any_allow = 1 THEN 1",
+                "      WHEN apl.any_deny = 1 THEN 0",
+                "      WHEN apl.any_allow = 1 THEN 1",
+                "      WHEN agl.any_deny = 1 THEN 0",
+                "      WHEN agl.any_allow = 1 THEN 1",
+                "      ELSE 0",
+                "    END AS anon_is_allowed",
+                "  FROM base b",
+                "  JOIN anon_child_lvl acl ON b.parent = acl.parent AND (b.child = acl.child OR (b.child IS NULL AND acl.child IS NULL))",
+                "  JOIN anon_parent_lvl apl ON b.parent = apl.parent AND (b.child = apl.child OR (b.child IS NULL AND apl.child IS NULL))",
+                "  JOIN anon_global_lvl agl ON b.parent = agl.parent AND (b.child = agl.child OR (b.child IS NULL AND agl.child IS NULL))",
+                "),",
+            ]
         )
 
     # Final decisions
@@ -326,28 +342,31 @@ async def _build_single_action_sql(
             "decisions AS (",
             "  SELECT",
             "    b.parent, b.child,",
-            "    -- Cascading permission logic: child -> parent -> global, DENY beats ALLOW at each level",
+            "    -- Cascading permission logic: child → parent → global, DENY beats ALLOW at each level",
             "    -- Priority order:",
-            "    --   1. Child-level deny  2. Child-level allow",
+            "    --   1. Child-level deny (most specific, blocks access)",
-            "    --   3. Parent-level deny 4. Parent-level allow",
+            "    --   2. Child-level allow (most specific, grants access)",
-            "    --   5. Global-level deny 6. Global-level allow",
+            "    --   3. Parent-level deny (intermediate, blocks access)",
+            "    --   4. Parent-level allow (intermediate, grants access)",
+            "    --   5. Global-level deny (least specific, blocks access)",
+            "    --   6. Global-level allow (least specific, grants access)",
             "    --   7. Default deny (no rules match)",
             "    CASE",
-            "      WHEN ca.any_deny = 1 THEN 0",
+            "      WHEN cl.any_deny = 1 THEN 0",
-            "      WHEN ca.any_allow = 1 THEN 1",
+            "      WHEN cl.any_allow = 1 THEN 1",
-            "      WHEN pa.any_deny = 1 THEN 0",
+            "      WHEN pl.any_deny = 1 THEN 0",
-            "      WHEN pa.any_allow = 1 THEN 1",
+            "      WHEN pl.any_allow = 1 THEN 1",
-            "      WHEN ga.any_deny = 1 THEN 0",
+            "      WHEN gl.any_deny = 1 THEN 0",
-            "      WHEN ga.any_allow = 1 THEN 1",
+            "      WHEN gl.any_allow = 1 THEN 1",
             "      ELSE 0",
             "    END AS is_allowed,",
             "    CASE",
-            "      WHEN ca.any_deny = 1 THEN ca.deny_reasons",
+            "      WHEN cl.any_deny = 1 THEN cl.deny_reasons",
-            "      WHEN ca.any_allow = 1 THEN ca.allow_reasons",
+            "      WHEN cl.any_allow = 1 THEN cl.allow_reasons",
-            "      WHEN pa.any_deny = 1 THEN pa.deny_reasons",
+            "      WHEN pl.any_deny = 1 THEN pl.deny_reasons",
-            "      WHEN pa.any_allow = 1 THEN pa.allow_reasons",
+            "      WHEN pl.any_allow = 1 THEN pl.allow_reasons",
-            "      WHEN ga.any_deny = 1 THEN ga.deny_reasons",
+            "      WHEN gl.any_deny = 1 THEN gl.deny_reasons",
-            "      WHEN ga.any_allow = 1 THEN ga.allow_reasons",
+            "      WHEN gl.any_allow = 1 THEN gl.allow_reasons",
             "      ELSE '[]'",
             "    END AS reason",
         ]
@@ -355,34 +374,21 @@ async def _build_single_action_sql(
 
     if include_is_private:
         query_parts.append(
-            "    , CASE WHEN ("
+            "    , CASE WHEN ad.anon_is_allowed = 0 THEN 1 ELSE 0 END AS is_private"
-            "CASE"
-            " WHEN aca.any_deny = 1 THEN 0"
-            " WHEN aca.any_allow = 1 THEN 1"
-            " WHEN apa.any_deny = 1 THEN 0"
-            " WHEN apa.any_allow = 1 THEN 1"
-            " WHEN aga.any_deny = 1 THEN 0"
-            " WHEN aga.any_allow = 1 THEN 1"
-            " ELSE 0 END"
-            ") = 0 THEN 1 ELSE 0 END AS is_private"
         )
 
     query_parts.extend(
         [
             "  FROM base b",
-            "  LEFT JOIN child_agg ca ON ca.parent = b.parent AND ca.child = b.child",
+            "  JOIN child_lvl cl ON b.parent = cl.parent AND (b.child = cl.child OR (b.child IS NULL AND cl.child IS NULL))",
-            "  LEFT JOIN parent_agg pa ON pa.parent = b.parent",
+            "  JOIN parent_lvl pl ON b.parent = pl.parent AND (b.child = pl.child OR (b.child IS NULL AND pl.child IS NULL))",
-            "  CROSS JOIN global_agg ga",
+            "  JOIN global_lvl gl ON b.parent = gl.parent AND (b.child = gl.child OR (b.child IS NULL AND gl.child IS NULL))",
         ]
     )
 
     if include_is_private:
-        query_parts.extend(
+        query_parts.append(
-            [
+            "  JOIN anon_decisions ad ON b.parent = ad.parent AND (b.child = ad.child OR (b.child IS NULL AND ad.child IS NULL))"
-                "  LEFT JOIN anon_child_agg aca ON aca.parent = b.parent AND aca.child = b.child",
-                "  LEFT JOIN anon_parent_agg apa ON apa.parent = b.parent",
-                "  CROSS JOIN anon_global_agg aga",
-            ]
         )
 
     query_parts.append(")")
@@ -392,31 +398,10 @@ async def _build_single_action_sql(
         # Wrap each restriction_sql in a subquery to avoid operator precedence issues
         # with UNION ALL inside the restriction SQL statements
         restriction_intersect = "\nINTERSECT\n".join(
-            f"SELECT parent, child COLLATE {child_collation} AS child FROM ({sql})"
+            f"SELECT * FROM ({sql})" for sql in restriction_sqls
-            for sql in restriction_sqls
         )
-        # Decompose by NULL-pattern so the final filter can use pure-equality
-        # EXISTS lookups (satisfiable via automatic indexes) instead of a
-        # correlated OR-scan over the whole list.
         query_parts.extend(
-            [
+            [",", "restriction_list AS (", f"  {restriction_intersect}", ")"]
-                ",",
-                "restriction_list AS (",
-                f"  {restriction_intersect}",
-                "),",
-                "restriction_exact AS (",
-                "  SELECT parent, child FROM restriction_list WHERE parent IS NOT NULL AND child IS NOT NULL",
-                "),",
-                "restriction_parent_any AS (",
-                "  SELECT DISTINCT parent FROM restriction_list WHERE parent IS NOT NULL AND child IS NULL",
-                "),",
-                "restriction_child_any AS (",
-                "  SELECT DISTINCT child FROM restriction_list WHERE parent IS NULL AND child IS NOT NULL",
-                "),",
-                "restriction_all AS (",
-                "  SELECT 1 AS matched FROM restriction_list WHERE parent IS NULL AND child IS NULL LIMIT 1",
-                ")",
-            ]
         )
 
     # Final SELECT
@@ -431,11 +416,10 @@ async def _build_single_action_sql(
     # Add restriction filter if there are restrictions
     if restriction_sqls:
         query_parts.append("""
-  AND (
+  AND EXISTS (
-    EXISTS (SELECT 1 FROM restriction_all)
+    SELECT 1 FROM restriction_list r
-    OR EXISTS (SELECT 1 FROM restriction_parent_any r WHERE r.parent = decisions.parent)
+    WHERE (r.parent = decisions.parent OR r.parent IS NULL)
-    OR EXISTS (SELECT 1 FROM restriction_child_any r WHERE r.child = decisions.child)
+      AND (r.child = decisions.child OR r.child IS NULL)
-    OR EXISTS (SELECT 1 FROM restriction_exact r WHERE r.parent = decisions.parent AND r.child = decisions.child)
   )""")
 
     # Add parent filter if specified
@@ -491,7 +475,6 @@ async def build_permission_rules_sql(
     union_parts = []
     all_params = {}
     restriction_sqls = []
-    child_collation = _child_collation(action_obj)
 
     for permission_sql in permission_sqls:
         all_params.update(permission_sql.params or {})
@@ -505,7 +488,7 @@ async def build_permission_rules_sql(
             continue
 
         union_parts.append(f"""
-            SELECT parent, child COLLATE {child_collation} AS child, allow, reason, '{permission_sql.source}' AS source_plugin FROM (
+            SELECT parent, child, allow, reason, '{permission_sql.source}' AS source_plugin FROM (
                 {permission_sql.sql}
             )
             """.strip())
@@ -576,7 +559,6 @@ async def check_permissions_for_actions(
     verdicts = {}
 
     for i, (action, permission_sqls) in enumerate(zip(unique_actions, gathered)):
-        child_collation = _child_collation(datasette.actions[action])
         prefix = f"a{i}_"
         rule_parts = []
         restriction_parts = []
@@ -602,7 +584,7 @@ async def check_permissions_for_actions(
             if sql is None:
                 continue
             rule_parts.append(
-                f"SELECT parent, child COLLATE {child_collation} AS child, allow, reason, '{permission_sql.source}' AS source_plugin FROM (\n{sql}\n)"
+                f"SELECT parent, child, allow, reason, '{permission_sql.source}' AS source_plugin FROM (\n{sql}\n)"
             )
 
         if not rule_parts:
@@ -636,8 +618,7 @@ async def check_permissions_for_actions(
         if restriction_parts:
             # Database-level restrictions (parent, NULL) match all children
             restriction_intersect = "\nINTERSECT\n".join(
-                f"SELECT parent, child COLLATE {child_collation} AS child FROM ({sql})"
+                f"SELECT * FROM ({sql})" for sql in restriction_parts
-                for sql in restriction_parts
             )
             ctes.append(f"a{i}_restriction AS (\n{restriction_intersect}\n)")
             verdict_sql = f"""({verdict_sql}) AND EXISTS (
@@ -692,240 +673,3 @@ async def check_permission_for_resource(
         child=child,
     )
     return results[action]
-
-
-async def explain_permission_for_resource(
-    *,
-    datasette: "Datasette",
-    actor: dict | None,
-    action: str,
-    parent: str | None,
-    child: str | None,
-) -> dict:
-    """Explain a permission decision for one action and resource.
-
-    This is intended for Datasette's permission debugging tools. It uses the
-    same ``permission_resources_sql`` hook results and the same resolution
-    rules as :func:`check_permissions_for_actions`, but also returns the
-    matching rules, actor restriction results and ``also_requires`` chain.
-
-    The returned dictionary is part of Datasette's unstable debugging API.
-    """
-
-    action_obj = datasette.actions.get(action)
-    if action_obj is None:
-        raise ValueError(f"Unknown action: {action}")
-
-    explanation = await _explain_single_action(
-        datasette=datasette,
-        actor=actor,
-        action=action,
-        parent=parent,
-        child=child,
-    )
-
-    required_actions = []
-    if action_obj.also_requires:
-        required = await explain_permission_for_resource(
-            datasette=datasette,
-            actor=actor,
-            action=action_obj.also_requires,
-            parent=parent,
-            child=child,
-        )
-        required_actions.append(required)
-
-    explanation["required_actions"] = required_actions
-    explanation["allowed"] = bool(
-        explanation["rule_allowed"]
-        and explanation["restriction_allowed"]
-        and all(required["allowed"] for required in required_actions)
-    )
-    explanation["summary"] = _permission_explanation_summary(explanation)
-    return explanation
-
-
-async def _explain_single_action(
-    *,
-    datasette: "Datasette",
-    actor: dict | None,
-    action: str,
-    parent: str | None,
-    child: str | None,
-) -> dict:
-    """Return matching rules and restrictions for a single action."""
-    from datasette.utils.permissions import SKIP_PERMISSION_CHECKS
-
-    permission_sqls = await gather_permission_sql_from_hooks(
-        datasette=datasette,
-        actor=actor,
-        action=action,
-    )
-
-    if permission_sqls is SKIP_PERMISSION_CHECKS:
-        return {
-            "action": action,
-            "rule_allowed": True,
-            "restriction_allowed": True,
-            "winning_scope": "global",
-            "matched_rules": [
-                {
-                    "scope": "global",
-                    "effect": "allow",
-                    "source": "skip_permission_checks",
-                    "reason": "Permission checks were explicitly skipped",
-                    "decisive": True,
-                    "ignored_because": None,
-                }
-            ],
-            "restrictions": [],
-        }
-
-    db = datasette.get_internal_database()
-    matched_rules = []
-    restrictions = []
-    child_collation = _child_collation(datasette.actions[action])
-
-    for permission_sql in permission_sqls:
-        params = dict(permission_sql.params or {})
-        parent_param = _unused_parameter_name(params, "_explain_parent")
-        params[parent_param] = parent
-        child_param = _unused_parameter_name(params, "_explain_child")
-        params[child_param] = child
-
-        if permission_sql.sql:
-            rows = await db.execute(
-                f"""
-                SELECT parent, child, allow, reason
-                FROM ({permission_sql.sql}) AS permission_rules
-                WHERE (parent IS NULL OR parent = :{parent_param})
-                  AND (child IS NULL OR child COLLATE {child_collation} = :{child_param})
-                """,
-                params,
-            )
-            for row in rows:
-                specificity = (
-                    2
-                    if row["child"] is not None
-                    else 1 if row["parent"] is not None else 0
-                )
-                matched_rules.append(
-                    {
-                        "scope": ("resource", "parent", "global")[2 - specificity],
-                        "effect": "allow" if row["allow"] else "deny",
-                        "source": permission_sql.source,
-                        "reason": row["reason"],
-                        "_specificity": specificity,
-                    }
-                )
-
-        if permission_sql.restriction_sql:
-            restriction_row = (
-                await db.execute(
-                    f"""
-                    SELECT EXISTS(
-                        SELECT 1 FROM ({permission_sql.restriction_sql}) AS restriction_rules
-                        WHERE (parent IS NULL OR parent = :{parent_param})
-                          AND (child IS NULL OR child COLLATE {child_collation} = :{child_param})
-                    ) AS resource_is_in_allowlist
-                    """,
-                    params,
-                )
-            ).first()
-            restriction_allowed = bool(restriction_row[0])
-            restrictions.append(
-                {
-                    "source": permission_sql.source,
-                    "allowed": restriction_allowed,
-                    "reason": params.get("deny")
-                    or (
-                        "Resource is included in this restriction allowlist"
-                        if restriction_allowed
-                        else "Resource is not included in this restriction allowlist"
-                    ),
-                }
-            )
-
-    matched_rules.sort(
-        key=lambda rule: (
-            -rule["_specificity"],
-            0 if rule["effect"] == "deny" else 1,
-            rule["source"] or "",
-            rule["reason"] or "",
-        )
-    )
-
-    if matched_rules:
-        winning_specificity = matched_rules[0]["_specificity"]
-        winning_rules = [
-            rule
-            for rule in matched_rules
-            if rule["_specificity"] == winning_specificity
-        ]
-        rule_allowed = not any(rule["effect"] == "deny" for rule in winning_rules)
-        winning_scope = winning_rules[0]["scope"]
-    else:
-        winning_specificity = None
-        rule_allowed = False
-        winning_scope = None
-
-    for rule in matched_rules:
-        specificity = rule.pop("_specificity")
-        if specificity != winning_specificity:
-            rule["decisive"] = False
-            rule["ignored_because"] = "A more specific rule matched"
-        elif not rule_allowed and rule["effect"] == "allow":
-            rule["decisive"] = False
-            rule["ignored_because"] = "A deny rule matched at the same scope"
-        else:
-            rule["decisive"] = True
-            rule["ignored_because"] = None
-
-    return {
-        "action": action,
-        "rule_allowed": rule_allowed,
-        "restriction_allowed": all(
-            restriction["allowed"] for restriction in restrictions
-        ),
-        "winning_scope": winning_scope,
-        "matched_rules": matched_rules,
-        "restrictions": restrictions,
-    }
-
-
-def _unused_parameter_name(params: dict, preferred: str) -> str:
-    """Return a SQL parameter name that is not already in ``params``."""
-    candidate = preferred
-    suffix = 2
-    while candidate in params:
-        candidate = f"{preferred}_{suffix}"
-        suffix += 1
-    return candidate
-
-
-def _permission_explanation_summary(explanation: dict) -> str:
-    denied_requirement = next(
-        (
-            required
-            for required in explanation["required_actions"]
-            if not required["allowed"]
-        ),
-        None,
-    )
-    if denied_requirement:
-        return (
-            f"Denied because {explanation['action']} also requires "
-            f"{denied_requirement['action']}, which was denied."
-        )
-    if not explanation["matched_rules"]:
-        return "Denied because no permission rule matched this actor and resource."
-    if not explanation["rule_allowed"]:
-        return (
-            f"Denied by a {explanation['winning_scope']}-level rule. "
-            "Deny rules take precedence over allow rules at the same scope."
-        )
-    if not explanation["restriction_allowed"]:
-        return (
-            "Denied because the resource is not included in the actor's restrictions."
-        )
-    return f"Allowed by the matching {explanation['winning_scope']}-level rule."

datasette/utils/asgi.py

@@ -1,30 +1,28 @@
-import asyncio
 import json
-import re
+from typing import Optional
-from http.cookies import Morsel, SimpleCookie
-from mimetypes import guess_type
-from pathlib import Path
-from urllib.parse import parse_qs, parse_qsl, urlunparse
-
-import aiofiles
-import aiofiles.os
-
 from datasette.utils import MultiParams, calculate_etag, error_body, sha256_file
 from datasette.utils.multipart import (
-    DEFAULT_MAX_FIELD_SIZE,
+    parse_form_data,
-    DEFAULT_MAX_FIELDS,
+    MultipartParseError,
+    FormData,
     DEFAULT_MAX_FILE_SIZE,
+    DEFAULT_MAX_REQUEST_SIZE,
+    DEFAULT_MAX_FIELDS,
     DEFAULT_MAX_FILES,
+    DEFAULT_MAX_PARTS,
+    DEFAULT_MAX_FIELD_SIZE,
     DEFAULT_MAX_MEMORY_FILE_SIZE,
     DEFAULT_MAX_PART_HEADER_BYTES,
     DEFAULT_MAX_PART_HEADER_LINES,
-    DEFAULT_MAX_PARTS,
-    DEFAULT_MAX_REQUEST_SIZE,
     DEFAULT_MIN_FREE_DISK_BYTES,
-    FormData,
-    MultipartParseError,
-    parse_form_data,
 )
+from mimetypes import guess_type
+from urllib.parse import parse_qs, urlunparse, parse_qsl
+from pathlib import Path
+from http.cookies import SimpleCookie, Morsel
+import aiofiles
+import aiofiles.os
+import re
 
 # Workaround for adding samesite support to pre 3.8 python
 Morsel._reserved["samesite"] = "SameSite"
@@ -90,7 +88,7 @@ class Request:
         self.max_post_body_bytes = max_post_body_bytes
 
     def __repr__(self):
-        return f'<asgi.Request method="{self.method}" url="{self.url}">'
+        return '<asgi.Request method="{}" url="{}">'.format(self.method, self.url)
 
     @property
     def method(self):
@@ -169,7 +167,7 @@ class Request:
         if max_bytes is None:
             max_bytes = self.max_post_body_bytes
         too_large = PayloadTooLarge(
-            f"Request body exceeded maximum size of {max_bytes} bytes"
+            "Request body exceeded maximum size of {} bytes".format(max_bytes)
         )
         if max_bytes:
             # Reject early if the client declares an oversized body
@@ -208,7 +206,7 @@ class Request:
         max_request_size: int = DEFAULT_MAX_REQUEST_SIZE,
         max_fields: int = DEFAULT_MAX_FIELDS,
         max_files: int = DEFAULT_MAX_FILES,
-        max_parts: int | None = DEFAULT_MAX_PARTS,
+        max_parts: Optional[int] = DEFAULT_MAX_PARTS,
         max_field_size: int = DEFAULT_MAX_FIELD_SIZE,
         max_memory_file_size: int = DEFAULT_MAX_MEMORY_FILE_SIZE,
         max_part_header_bytes: int = DEFAULT_MAX_PART_HEADER_BYTES,
@@ -301,24 +299,12 @@ class AsgiLifespan:
             while True:
                 message = await receive()
                 if message["type"] == "lifespan.startup":
-                    try:
+                    for fn in self.on_startup:
-                        for fn in self.on_startup:
+                        await fn()
-                            await fn()
-                    except Exception as e:  # noqa: BLE001
-                        await send(
-                            {"type": "lifespan.startup.failed", "message": str(e)}
-                        )
-                        return
                     await send({"type": "lifespan.startup.complete"})
                 elif message["type"] == "lifespan.shutdown":
-                    try:
+                    for fn in self.on_shutdown:
-                        for fn in self.on_shutdown:
+                        await fn()
-                            await fn()
-                    except Exception as e:  # noqa: BLE001
-                        await send(
-                            {"type": "lifespan.shutdown.failed", "message": str(e)}
-                        )
-                        return
                     await send({"type": "lifespan.shutdown.complete"})
                     return
         else:
@@ -498,8 +484,6 @@ def asgi_static(root_path, chunk_size=4096, headers=None, content_type=None):
             await asgi_send_html(send, "404: File not found", 404)
             return
 
-    # Only the actual static-file handler can bypass dynamic response privacy.
-    inner_static._datasette_static = True
     return inner_static
 
 
@@ -545,9 +529,9 @@ class Response:
         httponly=False,
         samesite="lax",
     ):
-        assert (
+        assert samesite in SAMESITE_VALUES, "samesite should be one of {}".format(
-            samesite in SAMESITE_VALUES
+            SAMESITE_VALUES
-        ), f"samesite should be one of {SAMESITE_VALUES}"
+        )
         cookie = SimpleCookie()
         cookie[key] = value
         for prop_name, prop_value in (
@@ -639,23 +623,10 @@ class AsgiRunOnFirstRequest:
         self.asgi = asgi
         self.on_startup = on_startup
         self._started = False
-        # Guards against concurrent early requests interleaving with startup:
-        # without this, several requests could all observe `_started is
-        # False` and proceed before any of them finish running the hooks.
-        self._lock = asyncio.Lock()
 
     async def __call__(self, scope, receive, send):
-        # Leave "lifespan" scope events alone - this shim only exists as a
+        if not self._started:
-        # fallback for hosts that never send them. It wraps AsgiLifespan, so
+            self._started = True
-        # if it ran on_startup here too, a startup exception would escape
+            for hook in self.on_startup:
-        # before AsgiLifespan's own try/except got a chance to turn it into
+                await hook()
-        # a lifespan.startup.failed message.
-        if scope["type"] != "lifespan" and not self._started:
-            async with self._lock:
-                # Re-check: another request may have finished startup while
-                # we were waiting for the lock.
-                if not self._started:
-                    for hook in self.on_startup:
-                        await hook()
-                    self._started = True
         return await self.asgi(scope, receive, send)

datasette/utils/baseconv.py

@@ -13,7 +13,7 @@ Originally shared here: https://www.djangosnippets.org/snippets/1431/
 """
 
 
-class BaseConverter:
+class BaseConverter(object):
     decimal_digits = "0123456789"
 
     def __init__(self, digits):

datasette/utils/check_callable.py

@@ -1,6 +1,6 @@
 import inspect
 import types
-from typing import Any, NamedTuple
+from typing import NamedTuple, Any
 
 
 class CallableStatus(NamedTuple):
@@ -19,7 +19,7 @@ def check_callable(obj: Any) -> CallableStatus:
     if isinstance(obj, types.FunctionType):
         return CallableStatus(True, inspect.iscoroutinefunction(obj))
 
-    if callable(obj):
+    if hasattr(obj, "__call__"):
         return CallableStatus(True, inspect.iscoroutinefunction(obj.__call__))
 
-    assert False, f"obj {obj!r} is somehow callable with no __call__ method"
+    assert False, "obj {} is somehow callable with no __call__ method".format(repr(obj))

datasette/utils/internal_db.py

@@ -3,7 +3,7 @@ import textwrap
 from sqlite_utils import Database as SQLiteUtilsDatabase
 from sqlite_utils import Migrations
 
-from datasette.utils import escape_sqlite, table_column_details
+from datasette.utils import table_column_details
 
 INTERNAL_DB_SCHEMA_TABLES = {
     "catalog_databases",
@@ -180,9 +180,29 @@ async def init_internal_db(db):
     await db.execute_write_fn(apply_migrations, transaction=False)
 
 
-async def populate_schema_tables(internal_db, db, schema_version):
+async def populate_schema_tables(internal_db, db):
     database_name = db.name
 
+    def delete_everything(conn):
+        conn.execute(
+            "DELETE FROM catalog_tables WHERE database_name = ?", [database_name]
+        )
+        conn.execute(
+            "DELETE FROM catalog_views WHERE database_name = ?", [database_name]
+        )
+        conn.execute(
+            "DELETE FROM catalog_columns WHERE database_name = ?", [database_name]
+        )
+        conn.execute(
+            "DELETE FROM catalog_foreign_keys WHERE database_name = ?",
+            [database_name],
+        )
+        conn.execute(
+            "DELETE FROM catalog_indexes WHERE database_name = ?", [database_name]
+        )
+
+    await internal_db.execute_write_fn(delete_everything)
+
     tables = (await db.execute("select * from sqlite_master WHERE type = 'table'")).rows
     views = (await db.execute("select * from sqlite_master WHERE type = 'view'")).rows
 
@@ -207,30 +227,25 @@ async def populate_schema_tables(internal_db, db, schema_version):
             columns = table_column_details(conn, table_name)
             columns_to_insert.extend(
                 {
-                    "database_name": database_name,
+                    **{"database_name": database_name, "table_name": table_name},
-                    "table_name": table_name,
                     **column._asdict(),
                 }
                 for column in columns
             )
             foreign_keys = conn.execute(
-                f"PRAGMA foreign_key_list({escape_sqlite(table_name)})"
+                f"PRAGMA foreign_key_list([{table_name}])"
             ).fetchall()
             foreign_keys_to_insert.extend(
                 {
-                    "database_name": database_name,
+                    **{"database_name": database_name, "table_name": table_name},
-                    "table_name": table_name,
                     **dict(foreign_key),
                 }
                 for foreign_key in foreign_keys
             )
-            indexes = conn.execute(
+            indexes = conn.execute(f"PRAGMA index_list([{table_name}])").fetchall()
-                f"PRAGMA index_list({escape_sqlite(table_name)})"
-            ).fetchall()
             indexes_to_insert.extend(
                 {
-                    "database_name": database_name,
+                    **{"database_name": database_name, "table_name": table_name},
-                    "table_name": table_name,
                     **dict(index),
                 }
                 for index in indexes
@@ -251,76 +266,47 @@ async def populate_schema_tables(internal_db, db, schema_version):
         indexes_to_insert,
     ) = await db.execute_fn(collect_info)
 
-    def replace_catalog(conn):
+    await internal_db.execute_write_many(
-        # Delete child rows before their catalog_tables parents so this also
+        """
-        # works if a prepare_connection plugin enables foreign key enforcement.
+        INSERT INTO catalog_tables (database_name, table_name, rootpage, sql)
-        for table in (
+        values (?, ?, ?, ?)
-            "catalog_columns",
+    """,
-            "catalog_foreign_keys",
+        tables_to_insert,
-            "catalog_indexes",
+    )
-            "catalog_views",
+    await internal_db.execute_write_many(
-            "catalog_tables",
+        """
-        ):
+        INSERT INTO catalog_views (database_name, view_name, rootpage, sql)
-            conn.execute(
+        values (?, ?, ?, ?)
-                f"DELETE FROM {table} WHERE database_name = ?",
+    """,
-                [database_name],
+        views_to_insert,
-            )
+    )
-        conn.execute(
+    await internal_db.execute_write_many(
-            """
+        """
-            INSERT OR REPLACE INTO catalog_databases (
+        INSERT INTO catalog_columns (
-                database_name, path, is_memory, schema_version
+            database_name, table_name, cid, name, type, "notnull", default_value, is_pk, hidden
-            ) VALUES (?, ?, ?, ?)
+        ) VALUES (
-            """,
+            :database_name, :table_name, :cid, :name, :type, :notnull, :default_value, :is_pk, :hidden
-            [
-                database_name,
-                str(db.path) if db.path is not None else None,
-                db.is_memory,
-                schema_version,
-            ],
         )
-        conn.executemany(
+    """,
-            """
+        columns_to_insert,
-            INSERT INTO catalog_tables (database_name, table_name, rootpage, sql)
+    )
-            values (?, ?, ?, ?)
+    await internal_db.execute_write_many(
-            """,
+        """
-            tables_to_insert,
+        INSERT INTO catalog_foreign_keys (
+            database_name, table_name, "id", seq, "table", "from", "to", on_update, on_delete, match
+        ) VALUES (
+            :database_name, :table_name, :id, :seq, :table, :from, :to, :on_update, :on_delete, :match
         )
-        conn.executemany(
+    """,
-            """
+        foreign_keys_to_insert,
-            INSERT INTO catalog_views (database_name, view_name, rootpage, sql)
+    )
-            values (?, ?, ?, ?)
+    await internal_db.execute_write_many(
-            """,
+        """
-            views_to_insert,
+        INSERT INTO catalog_indexes (
+            database_name, table_name, seq, name, "unique", origin, partial
+        ) VALUES (
+            :database_name, :table_name, :seq, :name, :unique, :origin, :partial
         )
-        conn.executemany(
+    """,
-            """
+        indexes_to_insert,
-            INSERT INTO catalog_columns (
+    )
-                database_name, table_name, cid, name, type, "notnull", default_value, is_pk, hidden
-            ) VALUES (
-                :database_name, :table_name, :cid, :name, :type, :notnull, :default_value, :is_pk, :hidden
-            )
-            """,
-            columns_to_insert,
-        )
-        conn.executemany(
-            """
-            INSERT INTO catalog_foreign_keys (
-                database_name, table_name, "id", seq, "table", "from", "to", on_update, on_delete, match
-            ) VALUES (
-                :database_name, :table_name, :id, :seq, :table, :from, :to, :on_update, :on_delete, :match
-            )
-            """,
-            foreign_keys_to_insert,
-        )
-        conn.executemany(
-            """
-            INSERT INTO catalog_indexes (
-                database_name, table_name, seq, name, "unique", origin, partial
-            ) VALUES (
-                :database_name, :table_name, :seq, :name, :unique, :origin, :partial
-            )
-            """,
-            indexes_to_insert,
-        )
-
-    await internal_db.execute_write_fn(replace_catalog)

datasette/utils/multipart.py

@@ -11,10 +11,15 @@ Supports:
 import asyncio
 import shutil
 import tempfile
-from collections.abc import Callable
 from dataclasses import dataclass, field
 from typing import (
     Any,
+    Callable,
+    Dict,
+    List,
+    Optional,
+    Tuple,
+    Union,
 )
 from urllib.parse import parse_qsl
 
@@ -24,7 +29,7 @@ DEFAULT_MAX_REQUEST_SIZE = 100 * 1024 * 1024  # 100MB
 DEFAULT_MAX_FIELDS = 1000
 DEFAULT_MAX_FILES = 100
 # If max_parts is not specified, it defaults to max_fields + max_files
-DEFAULT_MAX_PARTS: int | None = None
+DEFAULT_MAX_PARTS: Optional[int] = None
 DEFAULT_MAX_FIELD_SIZE = 100 * 1024  # 100KB
 DEFAULT_MAX_MEMORY_FILE_SIZE = 1024 * 1024  # 1MB
 DEFAULT_MAX_PART_HEADER_BYTES = 16 * 1024  # 16KB
@@ -35,6 +40,8 @@ DEFAULT_MIN_FREE_DISK_BYTES = 50 * 1024 * 1024  # 50MB
 class MultipartParseError(Exception):
     """Raised when multipart parsing fails."""
 
+    pass
+
 
 @dataclass
 class UploadedFile:
@@ -50,7 +57,7 @@ class UploadedFile:
 
     name: str
     filename: str
-    content_type: str | None
+    content_type: Optional[str]
     size: int
     _file: tempfile.SpooledTemporaryFile = field(repr=False)
 
@@ -79,8 +86,7 @@ class UploadedFile:
     def __del__(self):
         try:
             self._file.close()
-        except Exception:  # noqa: BLE001, S110
+        except Exception:
-            # __del__ must never raise
             pass
 
 
@@ -92,27 +98,27 @@ class FormData:
     """
 
     def __init__(self):
-        self._data: list[tuple[str, str | UploadedFile]] = []
+        self._data: List[Tuple[str, Union[str, UploadedFile]]] = []
 
-    def append(self, key: str, value: str | UploadedFile) -> None:
+    def append(self, key: str, value: Union[str, UploadedFile]) -> None:
         """Add a key-value pair."""
         self._data.append((key, value))
 
-    def __getitem__(self, key: str) -> str | UploadedFile:
+    def __getitem__(self, key: str) -> Union[str, UploadedFile]:
         """Get the first value for a key."""
         for k, v in self._data:
             if k == key:
                 return v
         raise KeyError(key)
 
-    def get(self, key: str, default: Any = None) -> str | UploadedFile | None:
+    def get(self, key: str, default: Any = None) -> Optional[Union[str, UploadedFile]]:
         """Get the first value for a key, or default if not found."""
         try:
             return self[key]
         except KeyError:
             return default
 
-    def getlist(self, key: str) -> list[str | UploadedFile]:
+    def getlist(self, key: str) -> List[Union[str, UploadedFile]]:
         """Get all values for a key."""
         return [v for k, v in self._data if k == key]
 
@@ -136,15 +142,15 @@ class FormData:
         """Return unique keys."""
         return list(self)
 
-    def items(self) -> list[tuple[str, str | UploadedFile]]:
+    def items(self) -> List[Tuple[str, Union[str, UploadedFile]]]:
         """Return all key-value pairs."""
         return list(self._data)
 
-    def values(self) -> list[str | UploadedFile]:
+    def values(self) -> List[Union[str, UploadedFile]]:
         """Return all values."""
         return [v for _, v in self._data]
 
-    def _uploaded_files(self) -> list[UploadedFile]:
+    def _uploaded_files(self) -> List[UploadedFile]:
         """Return UploadedFile instances contained in this form."""
         return [v for _, v in self._data if isinstance(v, UploadedFile)]
 
@@ -157,7 +163,7 @@ class FormData:
         for uploaded in self._uploaded_files():
             try:
                 uploaded.close_sync()
-            except Exception:  # noqa: BLE001, S110
+            except Exception:
                 # Best-effort cleanup; ignore close errors
                 pass
 
@@ -166,7 +172,7 @@ class FormData:
         for uploaded in self._uploaded_files():
             try:
                 await uploaded.close()
-            except Exception:  # noqa: BLE001, S110
+            except Exception:
                 # Best-effort cleanup; ignore close errors
                 pass
 
@@ -183,13 +189,13 @@ class FormData:
         await self.aclose()
 
 
-def parse_content_disposition(header: str) -> dict[str, str | None]:
+def parse_content_disposition(header: str) -> Dict[str, Optional[str]]:
     """
     Parse Content-Disposition header value.
 
     Returns dict with 'name', 'filename' keys (filename may be None).
     """
-    result: dict[str, str | None] = {"name": None, "filename": None}
+    result: Dict[str, Optional[str]] = {"name": None, "filename": None}
 
     # Split on semicolons, handling quoted strings
     parts = []
@@ -232,8 +238,7 @@ def parse_content_disposition(header: str) -> dict[str, str | None]:
                         from urllib.parse import unquote
 
                         result["filename"] = unquote(encoded, encoding="utf-8")
-                    except Exception:  # noqa: BLE001, S110
+                    except Exception:
-                        # Malformed RFC 5987 filename* - fall back to the plain filename
                         pass
             continue
 
@@ -245,19 +250,20 @@ def parse_content_disposition(header: str) -> dict[str, str | None]:
 
         if key == "name":
             result["name"] = value
-        # Only set filename if filename* hasn't already set it
+        elif key == "filename":
-        elif key == "filename" and result["filename"] is None:
+            # Only set if filename* hasn't already set it
-            # Strip path components (security)
+            if result["filename"] is None:
-            # Handle both Unix and Windows paths
+                # Strip path components (security)
-            value = value.replace("\\", "/")
+                # Handle both Unix and Windows paths
-            if "/" in value:
+                value = value.replace("\\", "/")
-                value = value.rsplit("/", 1)[-1]
+                if "/" in value:
-            result["filename"] = value
+                    value = value.rsplit("/", 1)[-1]
+                result["filename"] = value
 
     return result
 
 
-def parse_content_type(header: str) -> tuple[str, dict[str, str]]:
+def parse_content_type(header: str) -> Tuple[str, Dict[str, str]]:
     """
     Parse Content-Type header value.
 
@@ -301,7 +307,7 @@ class MultipartParser:
         max_request_size: int = DEFAULT_MAX_REQUEST_SIZE,
         max_fields: int = DEFAULT_MAX_FIELDS,
         max_files: int = DEFAULT_MAX_FILES,
-        max_parts: int | None = DEFAULT_MAX_PARTS,
+        max_parts: Optional[int] = DEFAULT_MAX_PARTS,
         max_field_size: int = DEFAULT_MAX_FIELD_SIZE,
         max_memory_file_size: int = DEFAULT_MAX_MEMORY_FILE_SIZE,
         max_part_header_bytes: int = DEFAULT_MAX_PART_HEADER_BYTES,
@@ -342,12 +348,12 @@ class MultipartParser:
         self._tempdir = tempfile.gettempdir()
 
         # Current part state
-        self.current_headers: dict[str, str] = {}
+        self.current_headers: Dict[str, str] = {}
-        self.current_file: tempfile.SpooledTemporaryFile | None = None
+        self.current_file: Optional[tempfile.SpooledTemporaryFile] = None
         self.current_body = bytearray()
-        self.current_name: str | None = None
+        self.current_name: Optional[str] = None
-        self.current_filename: str | None = None
+        self.current_filename: Optional[str] = None
-        self.current_content_type: str | None = None
+        self.current_content_type: Optional[str] = None
 
     def feed(self, chunk: bytes) -> None:
         """Feed a chunk of data to the parser."""
@@ -448,7 +454,7 @@ class MultipartParser:
             # Parse header
             try:
                 line_str = line.decode("utf-8", errors="replace")
-            except UnicodeDecodeError:
+            except Exception:
                 line_str = line.decode("latin-1")
 
             if ":" in line_str:
@@ -475,9 +481,7 @@ class MultipartParser:
             if self.file_count > self.max_files:
                 raise MultipartParseError("Too many files")
             if self.handle_files:
-                # Outlives this method - it is filled in across parser callbacks
+                self.current_file = tempfile.SpooledTemporaryFile(
-                # and then handed to the UploadedFile the caller consumes
-                self.current_file = tempfile.SpooledTemporaryFile(  # noqa: SIM115
                     max_size=self.max_memory_file_size
                 )
             else:
@@ -640,7 +644,7 @@ async def parse_form_data(
     max_request_size: int = DEFAULT_MAX_REQUEST_SIZE,
     max_fields: int = DEFAULT_MAX_FIELDS,
     max_files: int = DEFAULT_MAX_FILES,
-    max_parts: int | None = DEFAULT_MAX_PARTS,
+    max_parts: Optional[int] = DEFAULT_MAX_PARTS,
     max_field_size: int = DEFAULT_MAX_FIELD_SIZE,
     max_memory_file_size: int = DEFAULT_MAX_MEMORY_FILE_SIZE,
     max_part_header_bytes: int = DEFAULT_MAX_PART_HEADER_BYTES,

datasette/utils/permissions.py

@@ -2,9 +2,8 @@
 from __future__ import annotations
 
 import json
+from typing import Any, Dict, Iterable, List, Sequence, Tuple
 import sqlite3
-from collections.abc import Iterable, Sequence
-from typing import Any
 
 from datasette.permissions import PermissionSQL
 from datasette.plugins import pm
@@ -16,7 +15,7 @@ SKIP_PERMISSION_CHECKS = object()
 
 async def gather_permission_sql_from_hooks(
     *, datasette, actor: dict | None, action: str
-) -> list[PermissionSQL] | object:
+) -> List[PermissionSQL] | object:
     """Collect PermissionSQL objects from the permission_resources_sql hook.
 
     Ensures that each returned PermissionSQL has a populated ``source``.
@@ -35,7 +34,7 @@ async def gather_permission_sql_from_hooks(
     hookimpls = hook_caller.get_hookimpls()
     hook_results = list(hook_caller(datasette=datasette, actor=actor, action=action))
 
-    collected: list[PermissionSQL] = []
+    collected: List[PermissionSQL] = []
     actor_json = json.dumps(actor) if actor is not None else None
     actor_id = actor.get("id") if isinstance(actor, dict) else None
 
@@ -72,7 +71,7 @@ def _iter_permission_sql_from_result(
     if isinstance(result, PermissionSQL):
         return [result]
     if isinstance(result, (list, tuple)):
-        collected: list[PermissionSQL] = []
+        collected: List[PermissionSQL] = []
         for item in result:
             collected.extend(_iter_permission_sql_from_result(item, action=action))
         return collected
@@ -91,7 +90,7 @@ def _iter_permission_sql_from_result(
 
 def build_rules_union(
     actor: dict | None, plugins: Sequence[PermissionSQL]
-) -> tuple[str, dict[str, Any]]:
+) -> Tuple[str, Dict[str, Any]]:
     """
     Compose plugin SQL into a UNION ALL.
 
@@ -103,10 +102,10 @@ def build_rules_union(
     The system reserves these parameter names: :actor, :actor_id, :action, :filter_parent
     Plugin parameters should be prefixed with a unique identifier (e.g., source name).
     """
-    parts: list[str] = []
+    parts: List[str] = []
     actor_json = json.dumps(actor) if actor else None
     actor_id = actor.get("id") if actor else None
-    params: dict[str, Any] = {"actor": actor_json, "actor_id": actor_id}
+    params: Dict[str, Any] = {"actor": actor_json, "actor_id": actor_id}
 
     for p in plugins:
         # No namespacing - just use plugin params as-is
@@ -142,10 +141,10 @@ async def resolve_permissions_from_catalog(
     plugins: Sequence[Any],
     action: str,
     candidate_sql: str,
-    candidate_params: dict[str, Any] | None = None,
+    candidate_params: Dict[str, Any] | None = None,
     *,
     implicit_deny: bool = True,
-) -> list[dict[str, Any]]:
+) -> List[Dict[str, Any]]:
     """
     Resolve permissions by embedding the provided *candidate_sql* in a CTE.
 
@@ -169,8 +168,8 @@ async def resolve_permissions_from_catalog(
       - parent, child, allow, reason, source_plugin, depth
       - resource (rendered "/parent/child" or "/parent" or "/")
     """
-    resolved_plugins: list[PermissionSQL] = []
+    resolved_plugins: List[PermissionSQL] = []
-    restriction_sqls: list[str] = []
+    restriction_sqls: List[str] = []
 
     for plugin in plugins:
         if callable(plugin) and not isinstance(plugin, PermissionSQL):
@@ -399,11 +398,11 @@ async def resolve_permissions_with_candidates(
     db,
     actor: dict | None,
     plugins: Sequence[Any],
-    candidates: list[tuple[str, str | None]],
+    candidates: List[Tuple[str, str | None]],
     action: str,
     *,
     implicit_deny: bool = True,
-) -> list[dict[str, Any]]:
+) -> List[Dict[str, Any]]:
     """
     Resolve permissions without any external candidate table by embedding
     the candidates as a UNION of parameterized SELECTs in a CTE.
@@ -412,8 +411,8 @@ async def resolve_permissions_with_candidates(
     actor: actor dict (or None), made available as :actor (JSON), :actor_id, and :action
     """
     # Build a small CTE for candidates.
-    cand_rows_sql: list[str] = []
+    cand_rows_sql: List[str] = []
-    cand_params: dict[str, Any] = {}
+    cand_params: Dict[str, Any] = {}
     for i, (parent, child) in enumerate(candidates):
         pkey = f"cand_p_{i}"
         ckey = f"cand_c_{i}"

datasette/utils/shutil_backport.py

@@ -6,7 +6,7 @@ https://github.com/python/cpython/blob/v3.8.3/LICENSE
 """
 
 import os
-from shutil import Error, copy, copy2, copystat
+from shutil import copy, copy2, copystat, Error
 
 
 def _copytree(

datasette/utils/sql_analysis.py

@@ -1,8 +1,6 @@
-import sys
 from dataclasses import dataclass
 from typing import Literal
 
-from datasette.utils import escape_sqlite
 from datasette.utils.sqlite import SQLiteTableType, sqlite3, sqlite_table_type
 
 SQLOperation = Literal[
@@ -197,16 +195,6 @@ def _allow_authorizer_action(*args):
     return sqlite3.SQLITE_OK
 
 
-def _disable_authorizer(conn):
-    # Python 3.11 added support for unregistering an authorizer using None.
-    # On Python 3.10, None is installed as the callback instead, and the next
-    # statement fails with "not authorized" when sqlite3 tries to call it.
-    if sys.version_info >= (3, 11):
-        conn.set_authorizer(None)
-    else:
-        conn.set_authorizer(_allow_authorizer_action)
-
-
 def analyze_sql_tables(
     conn,
     sql: str,
@@ -220,9 +208,7 @@ def analyze_sql_tables(
 
     This function is synchronous and connection-based. It temporarily installs a
     SQLite authorizer, prepares ``EXPLAIN <sql>``, and returns the operation
-    callbacks observed while SQLite compiles the statement. ``CREATE VIEW`` is
+    callbacks observed while SQLite compiles the statement.
-    additionally executed inside a rolled-back savepoint so its source-table reads
-    can be discovered by analyzing a query against the temporary view.
     """
     operations: dict[OperationKey, set[str]] = {}
 
@@ -427,12 +413,12 @@ def analyze_sql_tables(
                 database=None,
                 table=None,
                 sqlite_schema=sqlite_schema,
-                target=f"{arg1} {arg2}" if arg2 is not None else arg1,
+                target="{} {}".format(arg1, arg2) if arg2 is not None else arg1,
                 source=source,
             )
             return sqlite3.SQLITE_OK
 
-        action_name = _AUTHORIZER_ACTION_NAMES.get(action, f"SQLITE_{action}")
+        action_name = _AUTHORIZER_ACTION_NAMES.get(action, "SQLITE_{}".format(action))
         record(
             "unknown",
             "unknown",
@@ -495,7 +481,7 @@ def analyze_sql_tables(
                         conn, key.table, schema=key.sqlite_schema
                     )
     finally:
-        _disable_authorizer(conn)
+        conn.set_authorizer(None)
 
     has_schema_operation = any(
         key.target_type in {"table", "index", "view", "trigger", "virtual-table"}
@@ -535,7 +521,9 @@ def analyze_sql_tables(
             and key.target in _SQLITE_INTERNAL_SCHEMA_FUNCTIONS
         ):
             return True
-        return bool(key_is_drop_table_delete(key))
+        if key_is_drop_table_delete(key):
+            return True
+        return False
 
     def table_kind_for(key: OperationKey) -> SQLiteTableType | None:
         if (
@@ -546,7 +534,7 @@ def analyze_sql_tables(
             return None
         return table_kind_cache[(key.sqlite_schema, key.table)]
 
-    analysis = SQLAnalysis(
+    return SQLAnalysis(
         operations=tuple(
             Operation(
                 operation=key.operation,
@@ -563,58 +551,3 @@ def analyze_sql_tables(
             for key, columns in operations.items()
         )
     )
-
-    # SQLite does not resolve the SELECT body of a view when preparing CREATE
-    # VIEW, so its authorizer does not report reads from the view's source
-    # tables. Temporarily create the view, analyze a query against it (which
-    # does resolve the body), then roll the schema change back. Database-level
-    # callers use an isolated writable connection for this analysis.
-    create_view_operations = tuple(
-        operation
-        for operation in analysis.operations
-        if operation.operation == "create" and operation.target_type == "view"
-    )
-    if not create_view_operations:
-        return analysis
-
-    savepoint = "datasette_analyze_create_view"
-    conn.execute(f"SAVEPOINT {savepoint}")
-    try:
-        conn.execute(sql, params if params is not None else {})
-        dependency_reads = []
-        for view_operation in create_view_operations:
-            if view_operation.sqlite_schema is None or view_operation.table is None:
-                raise sqlite3.OperationalError(
-                    "Could not determine the created view name"
-                )
-            quoted_schema = escape_sqlite(view_operation.sqlite_schema)
-            quoted_view = escape_sqlite(view_operation.table)
-            qualified_view = f"{quoted_schema}.{quoted_view}"
-            view_analysis = analyze_sql_tables(
-                conn,
-                f"SELECT * FROM {qualified_view}",
-                database_name=database_name,
-                schema_to_database=schema_to_database,
-            )
-            dependency_reads.extend(
-                operation
-                for operation in view_analysis.operations
-                if operation.operation == "read"
-                and not (
-                    operation.sqlite_schema == view_operation.sqlite_schema
-                    and operation.table == view_operation.table
-                )
-            )
-    finally:
-        conn.execute(f"ROLLBACK TO {savepoint}")
-        conn.execute(f"RELEASE {savepoint}")
-
-    existing_operations = set(analysis.operations)
-    return SQLAnalysis(
-        operations=analysis.operations
-        + tuple(
-            operation
-            for operation in dependency_reads
-            if operation not in existing_operations
-        )
-    )

datasette/utils/sqlite.py

@@ -15,17 +15,8 @@ if hasattr(sqlite3, "enable_callback_tracebacks"):
 _cached_sqlite_version = None
 _cached_supports_returning = None
 SQLiteTableType = Literal["table", "view", "virtual", "shadow"]
-_SQLITE_IDENTIFIER_RE = (
-    r"""(?:"(?:[^"]|"")*"|'(?:[^']|'')*'|`(?:[^`]|``)*`|\[[^\]]*\]|[^\s.()'"`\[\]]+)"""
-)
 _VIRTUAL_TABLE_MODULE_RE = re.compile(
-    r"^\s*CREATE\s+VIRTUAL\s+TABLE\b\s*(?:IF\s+NOT\s+EXISTS\s+)?"
+    r"\bCREATE\s+VIRTUAL\s+TABLE\b.*?\bUSING\s+([^\s(]+)",
-    + _SQLITE_IDENTIFIER_RE
-    + r"(?:\s*\.\s*"
-    + _SQLITE_IDENTIFIER_RE
-    + r")?\s*\bUSING\b\s*("
-    + _SQLITE_IDENTIFIER_RE
-    + r")",
     re.IGNORECASE | re.DOTALL,
 )
 _VIRTUAL_TABLE_SHADOW_SUFFIXES = {
@@ -92,58 +83,24 @@ def sqlite_table_type(
 ) -> SQLiteTableType | None:
     if supports_table_list():
         try:
-            # Use the "PRAGMA table_list" statement form rather than the
+            query = "select type from pragma_table_list where name = ?"
-            # pragma_table_list(...) table-valued function. The
+            params: tuple[str, ...] = (table,)
-            # table-valued function is resolved like an ordinary relation
-            # name, so an attacker-created table or view literally named
-            # "pragma_table_list" can shadow it and spoof the reported
-            # type (e.g. claiming a virtual table is an ordinary table).
-            # The PRAGMA statement form is a distinct piece of SQL syntax
-            # that always invokes SQLite's built-in pragma, so it cannot
-            # be shadowed by a user-created relation.
             if schema is not None:
-                query = f"PRAGMA {_quote_identifier(schema)}.table_list"
+                query += " and schema = ?"
-            else:
+                params = (table, schema)
-                query = "PRAGMA table_list"
+            row = conn.execute(query, params).fetchone()
-            cursor = conn.execute(query)
+            if row is not None and row[0] in {"table", "view", "virtual", "shadow"}:
-            columns = [description[0] for description in cursor.description]
+                return row[0]
-            for row in cursor.fetchall():
-                record = dict(zip(columns, row))
-                if record.get("name") != table:
-                    continue
-                if schema is not None and record.get("schema") != schema:
-                    continue
-                row_type = record.get("type")
-                if row_type in {"table", "view", "virtual", "shadow"}:
-                    return row_type
         except sqlite3.DatabaseError:
             pass
     return _sqlite_table_type_from_schema(conn, table, schema=schema)
 
 
-def check_structured_write_table(conn, table: str, *, allow_missing=False):
-    """Validate a row-write target on the connection that will perform the write."""
-    # SQLite resolves identifiers case-insensitively. The create API must not
-    # treat a differently cased existing name as a missing table.
-    row = conn.execute(
-        "select name from main.sqlite_master where name = ? collate nocase "
-        "and type in ('table', 'view')",
-        (table,),
-    ).fetchone()
-    if row is None and allow_missing:
-        return
-    if row is not None and sqlite_table_type(conn, row[0]) == "table":
-        return
-    # Virtual table modules can interpret row writes as administrative operations.
-    # Their shadow tables are internal storage, not independently writable data.
-    raise ValueError("Structured writes require an ordinary table")
-
-
 def sqlite_hidden_table_names(conn, *, schema: str | None = "main") -> list[str]:
     schema_table = _sqlite_schema_table(schema)
     try:
         rows = conn.execute(
-            f"select name, sql from {schema_table} where type = 'table'"
+            "select name, sql from {} where type = 'table'".format(schema_table)
         ).fetchall()
     except sqlite3.DatabaseError:
         return []
@@ -161,63 +118,6 @@ def sqlite_hidden_table_names(conn, *, schema: str | None = "main") -> list[str]
     return sorted(hidden_tables) + content_fts_tables
 
 
-def sqlite_derived_table_dependencies(
-    conn, *, schema: str | None = "main"
-) -> dict[str, str]:
-    """Return implementation table -> logical/content table dependencies.
-
-    ``PRAGMA table_list`` safely identifies virtual and shadow tables, but
-    does not report which virtual table owns a shadow table or which table is
-    named by an FTS ``content=`` option. Derive those relationships from
-    ``sqlite_master`` DDL and the documented shadow-table suffixes.
-
-    Database errors propagate: failed discovery must not be mistaken for an
-    empty dependency map and cached as permission to skip inheritance.
-    """
-    schema_table = _sqlite_schema_table(schema)
-    rows = conn.execute(
-        f"select name, sql from {schema_table} where type = 'table'"
-    ).fetchall()
-
-    table_names = {row[0] for row in rows}
-    # SQLite identifiers fold ASCII letters only.
-    identifier_case = str.maketrans(
-        "ABCDEFGHIJKLMNOPQRSTUVWXYZ", "abcdefghijklmnopqrstuvwxyz"
-    )
-    canonical_names = {name.translate(identifier_case): name for name in table_names}
-    dependencies = {}
-    for virtual_table, sql in rows:
-        module = _virtual_table_module(sql)
-        if module is None:
-            continue
-
-        # SQLite's documented shadow tables are implementation details of
-        # their logical virtual table.
-        for suffix in _VIRTUAL_TABLE_SHADOW_SUFFIXES.get(module, ()):
-            shadow_table = virtual_table + suffix
-            if shadow_table in table_names:
-                dependencies[shadow_table] = virtual_table
-
-        # An external-content FTS table can expose values fetched from its
-        # content table, so it must also depend on that table's permission.
-        if module in {"fts3", "fts4", "fts5"}:
-            content_table = _fts_external_content_table(sql)
-            if content_table:
-                dependencies[virtual_table] = content_table
-
-        if module in {"fts5vocab", "fts4aux"}:
-            source = _fts_vocabulary_source(sql, module, schema or "main")
-            source = (
-                canonical_names.get(source.translate(identifier_case))
-                if source
-                else None
-            )
-            # An unresolved source is itself derived, so the one-hop policy denies it.
-            dependencies[virtual_table] = source or virtual_table
-
-    return dependencies
-
-
 def _sqlite_table_type_from_schema(
     conn,
     table: str,
@@ -227,7 +127,7 @@ def _sqlite_table_type_from_schema(
     schema_table = _sqlite_schema_table(schema)
     try:
         row = conn.execute(
-            f"select type, sql from {schema_table} where name = ?",
+            "select type, sql from {} where name = ?".format(schema_table),
             (table,),
         ).fetchone()
     except sqlite3.DatabaseError:
@@ -255,7 +155,7 @@ def _is_known_shadow_table(
     schema_table = _sqlite_schema_table(schema)
     try:
         rows = conn.execute(
-            f"select name, sql from {schema_table} where type = 'table'"
+            "select name, sql from {} where type = 'table'".format(schema_table)
         ).fetchall()
     except sqlite3.DatabaseError:
         return False
@@ -274,7 +174,7 @@ def _sqlite_schema_table(schema: str | None) -> str:
         return "sqlite_master"
     if schema == "temp":
         return "sqlite_temp_master"
-    return f"{_quote_identifier(schema)}.sqlite_master"
+    return "{}.sqlite_master".format(_quote_identifier(schema))
 
 
 def _quote_identifier(value: str) -> str:
@@ -284,151 +184,10 @@ def _quote_identifier(value: str) -> str:
 def _virtual_table_module(sql: str | None) -> str | None:
     if not sql:
         return None
-    match = _VIRTUAL_TABLE_MODULE_RE.search(_strip_sql_comments(sql))
-    if match is None:
-        return None
-    return _unquote_sql_value(match.group(1)).lower()
-
-
-def _fts_external_content_table(sql: str | None) -> str | None:
-    """Extract the external ``content=`` table from an FTS declaration."""
-    if not sql:
-        return None
-    sql = _strip_sql_comments(sql)
     match = _VIRTUAL_TABLE_MODULE_RE.search(sql)
     if match is None:
         return None
-    open_paren = sql.find("(", match.end())
+    return match.group(1).strip("\"'[]`").lower()
-    if open_paren == -1:
-        return None
-    close_paren = sql.rfind(")")
-    if close_paren <= open_paren:
-        return None
-
-    for argument in _split_sql_arguments(sql[open_paren + 1 : close_paren]):
-        key, separator, value = argument.partition("=")
-        if not separator or key.strip().lower() != "content":
-            continue
-        return _unquote_sql_value(value.strip())
-    return None
-
-
-def _fts_vocabulary_source(sql: str, module: str, schema: str) -> str | None:
-    """Resolve a vocabulary source within the current SQLite schema.
-
-    Cross-schema sources cannot be represented by the dependency map and
-    are conservatively left unresolved.
-    """
-    sql = _strip_sql_comments(sql)
-    match = _VIRTUAL_TABLE_MODULE_RE.search(sql)
-    if match is None:
-        return None
-    start = sql.find("(", match.end())
-    end = sql.rfind(")")
-    if start < 0 or end <= start:
-        return None
-    arguments = [
-        _unquote_sql_value(arg.strip())
-        for arg in _split_sql_arguments(sql[start + 1 : end])
-    ]
-    expected = 2 if module == "fts5vocab" else 1
-    if len(arguments) == expected:
-        return arguments[0]
-    if len(arguments) == expected + 1 and arguments[0].lower() == schema.lower():
-        return arguments[1]
-    return None
-
-
-def _split_sql_arguments(arguments: str) -> list[str]:
-    """Split comma-separated SQLite arguments without splitting quoted text."""
-    parts = []
-    start = 0
-    quote = None
-    closing_quote = None
-    index = 0
-    while index < len(arguments):
-        char = arguments[index]
-        if quote is None:
-            if char in {"'", '"', "`", "["}:
-                quote = char
-                closing_quote = "]" if char == "[" else char
-            elif char == ",":
-                parts.append(arguments[start:index])
-                start = index + 1
-        elif char == closing_quote:
-            # Single/double/backtick quoting escapes the delimiter by
-            # doubling it. Square-bracket identifiers do not.
-            if (
-                quote != "["
-                and index + 1 < len(arguments)
-                and arguments[index + 1] == closing_quote
-            ):
-                index += 1
-            else:
-                quote = None
-                closing_quote = None
-        index += 1
-    parts.append(arguments[start:])
-    return parts
-
-
-def _strip_sql_comments(sql: str) -> str:
-    """Remove SQLite comments while preserving quoted strings/identifiers."""
-    output = []
-    quote = None
-    closing_quote = None
-    index = 0
-    while index < len(sql):
-        char = sql[index]
-        next_char = sql[index + 1] if index + 1 < len(sql) else ""
-        if quote is None:
-            if char in {"'", '"', "`", "["}:
-                quote = char
-                closing_quote = "]" if char == "[" else char
-                output.append(char)
-            elif char == "-" and next_char == "-":
-                index += 2
-                while index < len(sql) and sql[index] not in "\r\n":
-                    index += 1
-                output.append(" ")
-                continue
-            elif char == "/" and next_char == "*":
-                index += 2
-                while index + 1 < len(sql) and sql[index : index + 2] != "*/":
-                    index += 1
-                index = min(index + 2, len(sql))
-                output.append(" ")
-                continue
-            else:
-                output.append(char)
-        else:
-            output.append(char)
-            if char == closing_quote:
-                if (
-                    quote != "["
-                    and index + 1 < len(sql)
-                    and sql[index + 1] == closing_quote
-                ):
-                    output.append(sql[index + 1])
-                    index += 1
-                else:
-                    quote = None
-                    closing_quote = None
-        index += 1
-    return "".join(output)
-
-
-def _unquote_sql_value(value: str) -> str:
-    if len(value) < 2:
-        return value
-    pairs = {"'": "'", '"': '"', "`": "`", "[": "]"}
-    closing = pairs.get(value[0])
-    if closing is None or value[-1] != closing:
-        return value
-    unquoted = value[1:-1]
-    if value[0] != "[":
-        unquoted = unquoted.replace(closing * 2, closing)
-    return unquoted
 
 
 def _is_fts_content_virtual_table(sql: str | None) -> bool:

datasette/utils/testing.py

@@ -1,10 +1,9 @@
-import json
-from urllib.parse import urlencode
-
 from asgiref.sync import async_to_sync
+from urllib.parse import urlencode
+import json
 
 # These wrapper classes pre-date the introduction of
-# datasette.client and httpx2 to Datasette. They could
+# datasette.client and httpx to Datasette. They could
 # be removed if the Datasette tests are modified to
 # call datasette.client directly.
 

datasette/version.py

@@ -1,2 +1,2 @@
-__version__ = "1.0a39"
+__version__ = "1.0a36"
 __version_info__ = tuple(__version__.split("."))

datasette/views/__init__.py

@@ -1,7 +1,7 @@
+from dataclasses import dataclass
 import dataclasses
 import types
 import typing
-from dataclasses import dataclass
 
 
 @dataclass(frozen=True)
@@ -74,14 +74,16 @@ class Context:
             extra_class = table_extra_registry.classes_by_name[name]
         except KeyError:
             raise KeyError(
-                f"{cls.__name__}.{name} is declared with from_extra() but there is no "
+                "{}.{} is declared with from_extra() but there is no "
-                "registered extra of that name"
+                "registered extra of that name".format(cls.__name__, name)
             )
         if cls.extras_scope is not None and not extra_class.available_for(
             cls.extras_scope
         ):
             raise ValueError(
-                f"{cls.__name__}.{name} is declared with from_extra() but the {name} extra is "
+                "{}.{} is declared with from_extra() but the {} extra is "
-                f"not available for scope {cls.extras_scope}"
+                "not available for scope {}".format(
+                    cls.__name__, name, name, cls.extras_scope
+                )
             )
         return extra_class.description or ""

datasette/views/base.py

@@ -2,20 +2,20 @@ import csv
 import hashlib
 import sys
 
+from datasette.utils.asgi import Request
 from datasette.utils import (
+    add_cors_headers,
     EscapeHtmlWriter,
     InvalidSql,
     LimitedWriter,
-    add_cors_headers,
     path_from_row_pks,
     path_with_format,
     sqlite3,
 )
 from datasette.utils.asgi import (
     AsgiStream,
-    BadRequest,
-    Request,
     Response,
+    BadRequest,
 )
 
 
@@ -129,10 +129,12 @@ class BaseView:
         template = environment.select_template(templates)
         template_context = {
             **context,
-            "select_templates": [
+            **{
-                f"{'*' if template_name == template.name else ''}{template_name}"
+                "select_templates": [
-                for template_name in templates
+                    f"{'*' if template_name == template.name else ''}{template_name}"
-            ],
+                    for template_name in templates
+                ],
+            },
         }
         headers = {}
         if self.has_json_alternate:
@@ -149,7 +151,9 @@ class BaseView:
             template_context["alternate_url_json"] = alternate_url_json
             headers.update(
                 {
-                    "Link": f'<{alternate_url_json}>; rel="alternate"; type="application/json+datasette"'
+                    "Link": '<{}>; rel="alternate"; type="application/json+datasette"'.format(
+                        alternate_url_json
+                    )
                 }
             )
         return Response.html(
@@ -180,7 +184,9 @@ async def stream_csv(datasette, fetch_data, request, database):
     stream = request.args.get("_stream")
     # Do not calculate facets or counts:
     extra_parameters = [
-        f"{key}=1" for key in ("_nofacet", "_nocount") if not request.args.get(key)
+        "{}=1".format(key)
+        for key in ("_nofacet", "_nocount")
+        if not request.args.get(key)
     ]
     if extra_parameters:
         # Replace request object with a new one with modified scope
@@ -210,6 +216,9 @@ async def stream_csv(datasette, fetch_data, request, database):
     except (sqlite3.OperationalError, InvalidSql) as e:
         raise DatasetteError(str(e), title="Invalid SQL", status=400)
 
+    except sqlite3.OperationalError as e:
+        raise DatasetteError(str(e))
+
     except DatasetteError:
         raise
 
@@ -316,9 +325,8 @@ async def stream_csv(datasette, fetch_data, request, database):
                             else:
                                 new_row.append(cell)
                         await writer.writerow(new_row)
-            except Exception as ex:  # noqa: BLE001
+            except Exception as ex:
-                # Streaming CSV: report the error into the response body and stop
+                sys.stderr.write("Caught this error: {}\n".format(ex))
-                sys.stderr.write(f"Caught this error: {ex}\n")
                 sys.stderr.flush()
                 await r.write(str(ex))
                 return

datasette/views/database.py

@@ -1,56 +1,52 @@
+from dataclasses import asdict, dataclass, field
+from urllib.parse import parse_qsl, urlencode
 import asyncio
 import hashlib
 import itertools
 import json
+import markupsafe
 import os
 import textwrap
-from dataclasses import asdict, dataclass, field
-from urllib.parse import parse_qsl, urlencode
-
-import markupsafe
 
+from datasette.extras import extra_names_from_request, ExtraScope
 from datasette.database import QueryInterrupted
-from datasette.extras import ExtraScope, extra_names_from_request
-from datasette.plugins import pm
 from datasette.resources import DatabaseResource, QueryResource
 from datasette.stored_queries import StoredQuery, stored_query_to_dict
+from datasette.write_sql import QueryWriteRejected
 from datasette.utils import (
-    InvalidSql,
     add_cors_headers,
     await_me_maybe,
-    call_with_supported_arguments,
     error_body,
+    call_with_supported_arguments,
+    named_parameters as derive_named_parameters,
     format_bytes,
-    is_url,
     make_slot_function,
+    tilde_decode,
+    to_css_class,
+    validate_sql_select,
+    is_url,
     path_with_added_args,
     path_with_format,
     path_with_removed_args,
     sqlite3,
-    tilde_decode,
-    to_css_class,
     truncate_url,
-    validate_sql_select,
+    InvalidSql,
 )
-from datasette.utils import (
+from datasette.utils.asgi import AsgiFileDownload, NotFound, Response, Forbidden
-    named_parameters as derive_named_parameters,
+from datasette.plugins import pm
-)
-from datasette.utils.asgi import AsgiFileDownload, Forbidden, NotFound, Response
-from datasette.write_sql import QueryWriteRejected
 
-from . import Context
 from .base import DatasetteError, View, stream_csv
 from .query_helpers import (
-    _block_framing,
     _ensure_stored_query_execution_permissions,
-    _table_columns,
+    _editor_schema,
 )
-from .table_create_alter import _create_table_ui_context
 from .table_extras import (
     QueryExtraContext,
     resolve_query_extras,
     table_extra_registry,
 )
+from .table_create_alter import _create_table_ui_context
+from . import Context
 
 
 @dataclass
@@ -107,7 +103,7 @@ class DatabaseView(View):
             return response
 
         if format_ not in ("html", "json"):
-            raise NotFound(f"Invalid format: {format_}")
+            raise NotFound("Invalid format: {}".format(format_))
 
         metadata = await datasette.get_database_metadata(database)
 
@@ -171,7 +167,7 @@ class DatabaseView(View):
                         "label": "Create table",
                         "description": "Create a new table in this database.",
                         "attrs": {
-                            "aria-label": f"Create table in {database}",
+                            "aria-label": "Create table in {}".format(database),
                             "data-database-action": "create-table",
                         },
                     }
@@ -208,7 +204,7 @@ class DatabaseView(View):
             "queries_count": queries_count,
             "allow_execute_sql": allow_execute_sql,
             "table_columns": (
-                await _table_columns(datasette, database) if allow_execute_sql else {}
+                await _editor_schema(datasette, database) if allow_execute_sql else {}
             ),
             "metadata": await datasette.get_database_metadata(database),
         }
@@ -249,7 +245,7 @@ class DatabaseView(View):
                     queries_count=queries_count,
                     allow_execute_sql=allow_execute_sql,
                     table_columns=(
-                        await _table_columns(datasette, database)
+                        await _editor_schema(datasette, database)
                         if allow_execute_sql
                         else {}
                     ),
@@ -278,7 +274,9 @@ class DatabaseView(View):
                 view_name="database",
             ),
             headers={
-                "Link": f'<{alternate_url_json}>; rel="alternate"; type="application/json+datasette"'
+                "Link": '<{}>; rel="alternate"; type="application/json+datasette"'.format(
+                    alternate_url_json
+                )
             },
         )
 
@@ -459,6 +457,11 @@ class QueryContext(Context):
             "help": "Dictionary mapping table names to lists of column names, used to power SQL autocomplete."
         }
     )
+    default_table: str = field(
+        metadata={
+            "help": "Name of the focal table for this query, if any - set when the query page was reached from a table-scoped context (such as the table page's 'View and edit SQL' link) so the SQL editor can complete that table's columns unprefixed. ``None`` otherwise, including for stored/canned queries."
+        }
+    )
     alternate_url_json: str = field(
         metadata={"help": "URL for alternate JSON version of this page"}
     )
@@ -561,7 +564,7 @@ async def database_download(request, datasette):
     if datasette.cors:
         add_cors_headers(headers)
     if db.hash:
-        etag = f'"{db.hash}"'
+        etag = '"{}"'.format(db.hash)
         headers["Etag"] = etag
         # Has user seen this already?
         if_none_match = request.headers.get("if-none-match")
@@ -648,15 +651,8 @@ class QueryView(View):
         ok = None
         redirect_url = None
         try:
-            execute_write_kwargs = {"request": request}
-            if stored_query.is_trusted:
-                analysis = await db.analyze_sql(stored_query.sql, params_for_query)
-                if any(
-                    operation.operation == "vacuum" for operation in analysis.operations
-                ):
-                    execute_write_kwargs["transaction"] = False
             cursor = await db.execute_write(
-                stored_query.sql, params_for_query, **execute_write_kwargs
+                stored_query.sql, params_for_query, request=request
             )
             # success message can come from on_success_message or on_success_message_sql
             message = None
@@ -669,9 +665,8 @@ class QueryView(View):
                     ).first()
                     if message_result:
                         message = message_result[0]
-                except Exception as ex:  # noqa: BLE001
+                except Exception as ex:
-                    # Stored-query on_success_message_sql is user-authored
+                    message = "Error running on_success_message_sql: {}".format(ex)
-                    message = f"Error running on_success_message_sql: {ex}"
                     message_type = datasette.ERROR
             if not message:
                 if stored_query.on_success_message:
@@ -685,8 +680,7 @@ class QueryView(View):
 
             redirect_url = stored_query.on_success_redirect
             ok = True
-        except Exception as ex:  # noqa: BLE001
+        except Exception as ex:
-            # Stored-query execution is user-authored SQL
             message = stored_query.on_error_message or str(ex)
             message_type = datasette.ERROR
             redirect_url = stored_query.on_error_redirect
@@ -727,6 +721,15 @@ class QueryView(View):
         # Create lookup dict for quick access
         allowed_dict = {r.child: r for r in allowed_tables_page.resources}
 
+        # If the request carries a ?_table= pointing at a real (visible) table
+        # or view in this database, treat this as a table-scoped query - e.g.
+        # arriving here via the "View and edit SQL" link on a table page - so
+        # the SQL editor can offer that table's columns unprefixed. Anything
+        # else (including stored/canned queries, which may reference more
+        # than one table) leaves this as None.
+        requested_table = request.args.get("_table")
+        default_table = requested_table if requested_table in allowed_dict else None
+
         # Are we a stored query?
         stored_query = None
         stored_query_write = False
@@ -820,16 +823,16 @@ class QueryView(View):
                 rows = results.rows
             except QueryInterrupted as ex:
                 raise DatasetteError(
-                    textwrap.dedent(f"""
+                    textwrap.dedent("""
                     <p>SQL query took too long. The time limit is controlled by the
                     <a href="https://docs.datasette.io/en/stable/settings.html#sql-time-limit-ms">sql_time_limit_ms</a>
                     configuration option.</p>
-                    <textarea style="width: 90%">{markupsafe.escape(ex.sql)}</textarea>
+                    <textarea style="width: 90%">{}</textarea>
                     <script>
                     let ta = document.querySelector("textarea");
                     ta.style.height = ta.scrollHeight + "px";
                     </script>
-                """).strip(),
+                """.format(markupsafe.escape(ex.sql))).strip(),
                     title="SQL Interrupted",
                     status=400,
                     message_is_html=True,
@@ -845,6 +848,8 @@ class QueryView(View):
                 columns = []
             except (sqlite3.OperationalError, InvalidSql) as ex:
                 raise DatasetteError(str(ex), title="Invalid SQL", status=400)
+            except sqlite3.OperationalError as ex:
+                raise DatasetteError(str(ex))
             except DatasetteError:
                 raise
 
@@ -861,13 +866,12 @@ class QueryView(View):
                 raise DatasetteError("?sql= is required", status=400)
 
             async def fetch_data_for_csv(request, _next=None):
-                # Reuse the trusted magic parameter values prepared above.
+                results = await db.execute(sql, params, truncate=True)
-                results = await db.execute(sql, params_for_query, truncate=True)
                 data = {"rows": results.rows, "columns": results.columns}
                 return data, None, None
 
             return await stream_csv(datasette, fetch_data_for_csv, request, db.name)
-        elif format_ in datasette.renderers:
+        elif format_ in datasette.renderers.keys():
             if not sql:
                 raise DatasetteError("?sql= is required", status=400)
             data = {"ok": True, "rows": rows, "columns": columns}
@@ -959,7 +963,9 @@ class QueryView(View):
             }
             headers.update(
                 {
-                    "Link": f'<{alternate_url_json}>; rel="alternate"; type="application/json+datasette"'
+                    "Link": '<{}>; rel="alternate"; type="application/json+datasette"'.format(
+                        alternate_url_json
+                    )
                 }
             )
             metadata = await query_metadata()
@@ -1040,7 +1046,9 @@ class QueryView(View):
                         + "?"
                         + urlencode(
                             {
-                                "sql": sql,
+                                **{
+                                    "sql": sql,
+                                },
                                 **named_parameter_values,
                             }
                         )
@@ -1103,10 +1111,11 @@ class QueryView(View):
                             datasette, database, request, rows, columns
                         ),
                         table_columns=(
-                            await _table_columns(datasette, database)
+                            await _editor_schema(datasette, database)
                             if allow_execute_sql
                             else {}
                         ),
+                        default_table=default_table,
                         columns=columns,
                         renderers=renderers,
                         url_csv=datasette.urls.path(
@@ -1142,11 +1151,9 @@ class QueryView(View):
                 headers=headers,
             )
         else:
-            assert False, f"Invalid format: {format_}"
+            assert False, "Invalid format: {}".format(format_)
         if datasette.cors:
             add_cors_headers(r.headers)
-        if stored_query_write and format_ == "html":
-            _block_framing(r)
         return r
 
 
@@ -1245,7 +1252,7 @@ async def display_rows(datasette, database, request, rows, columns):
                         '<a class="blob-download" href="{}"{}>&lt;Binary:&nbsp;{:,}&nbsp;byte{}&gt;</a>'.format(
                             blob_url,
                             (
-                                f' title="{formatted}"'
+                                ' title="{}"'.format(formatted)
                                 if "bytes" not in formatted
                                 else ""
                             ),

datasette/views/execute_write.py

@@ -1,7 +1,6 @@
 import re
 from urllib.parse import urlencode
 
-from datasette.database import QueryInterrupted
 from datasette.resources import DatabaseResource
 from datasette.utils import UNSTABLE_API_MESSAGE, sqlite3
 from datasette.utils.asgi import Response
@@ -9,8 +8,8 @@ from datasette.utils.asgi import Response
 from .base import BaseView
 from .database import display_rows as display_query_rows
 from .query_helpers import (
-    SQL_PARAMETER_FORM_PREFIX,
     QueryValidationError,
+    SQL_PARAMETER_FORM_PREFIX,
     _analysis_is_write,
     _analysis_rows,
     _analysis_rows_with_permissions,
@@ -22,6 +21,7 @@ from .query_helpers import (
     _inserted_row_url,
     _json_or_form_payload,
     _prepare_execute_write,
+    _editor_schema,
     _table_columns,
     _wants_json,
 )
@@ -32,7 +32,15 @@ WRITE_TEMPLATE_LABELS = {
     "delete": "Delete rows",
 }
 WRITE_TEMPLATE_OPERATIONS = tuple(WRITE_TEMPLATE_LABELS)
-CREATE_TABLE_TEMPLATE_SQL = "create table new_table (\n  id integer primary key,\n  name text\n  -- created text default (datetime('now'))\n)"
+CREATE_TABLE_TEMPLATE_SQL = "\n".join(
+    (
+        "create table new_table (",
+        "  id integer primary key,",
+        "  name text",
+        "  -- created text default (datetime('now'))",
+        ")",
+    )
+)
 
 
 def _parameter_names(columns):
@@ -42,11 +50,11 @@ def _parameter_names(columns):
         base = re.sub(r"[^a-z0-9_]+", "_", column.lower())
         base = base.strip("_") or "value"
         if base[0].isdigit():
-            base = f"p_{base}"
+            base = "p_{}".format(base)
         name = base
         index = 2
         while name in seen:
-            name = f"{base}_{index}"
+            name = "{}_{}".format(base, index)
             index += 1
         seen.add(name)
         names[column] = name
@@ -58,7 +66,7 @@ def _quote_identifier(identifier):
 
 
 def _preferred_where_column(table, columns):
-    lower_table_id = f"{table.lower()}_id"
+    lower_table_id = "{}_id".format(table.lower())
     return (
         next((column for column in columns if column.lower() == "id"), None)
         or next(
@@ -83,15 +91,17 @@ def _insert_template_sql(table, columns):
     auto_pk = _auto_incrementing_primary_key(columns)
     insert_columns = [column for column in column_names if column != auto_pk]
     if not insert_columns:
-        return f"insert into {_quote_identifier(table)}\ndefault values"
+        return "insert into {}\ndefault values".format(_quote_identifier(table))
     names = _parameter_names(insert_columns)
     return "\n".join(
         (
-            f"insert into {_quote_identifier(table)} (",
+            "insert into {} (".format(_quote_identifier(table)),
-            ",\n".join(f"  {_quote_identifier(column)}" for column in insert_columns),
+            ",\n".join(
+                "  {}".format(_quote_identifier(column)) for column in insert_columns
+            ),
             ")",
             "values (",
-            ",\n".join(f"  :{names[column]}" for column in insert_columns),
+            ",\n".join("  :{}".format(names[column]) for column in insert_columns),
             ")",
         )
     )
@@ -105,14 +115,18 @@ def _update_template_sql(table, columns):
     if not set_columns:
         return "\n".join(
             (
-                f"update {_quote_identifier(table)}",
+                "update {}".format(_quote_identifier(table)),
-                f"set {_quote_identifier(where_column)} = :new_{names[where_column]}",
+                "set {} = :new_{}".format(
-                f"where {_quote_identifier(where_column)} = :{names[where_column]}",
+                    _quote_identifier(where_column), names[where_column]
+                ),
+                "where {} = :{}".format(
+                    _quote_identifier(where_column), names[where_column]
+                ),
             )
         )
     return "\n".join(
         (
-            f"update {_quote_identifier(table)}",
+            "update {}".format(_quote_identifier(table)),
             "set "
             + ",\n".join(
                 "{}{} = :{}".format(
@@ -122,7 +136,9 @@ def _update_template_sql(table, columns):
                 )
                 for index, column in enumerate(set_columns)
             ),
-            f"where {_quote_identifier(where_column)} = :{names[where_column]}",
+            "where {} = :{}".format(
+                _quote_identifier(where_column), names[where_column]
+            ),
         )
     )
 
@@ -133,8 +149,10 @@ def _delete_template_sql(table, columns):
     where_column = _preferred_where_column(table, column_names)
     return "\n".join(
         (
-            f"delete from {_quote_identifier(table)}",
+            "delete from {}".format(_quote_identifier(table)),
-            f"where {_quote_identifier(where_column)} = :{names[where_column]}",
+            "where {} = :{}".format(
+                _quote_identifier(where_column), names[where_column]
+            ),
         )
     )
 
@@ -249,6 +267,7 @@ class ExecuteWriteView(BaseView):
         write_template_tables = await _write_template_tables(
             self.ds, db, table_columns, hidden_table_names, request.actor
         )
+        editor_schema = await _editor_schema(self.ds, db.name)
         write_template_operations = _write_template_operations(write_template_tables)
         write_create_table_template_sql = await _create_table_template_sql(
             self.ds, db, request.actor
@@ -311,7 +330,7 @@ class ExecuteWriteView(BaseView):
                 "sql_parameter_name_prefix": SQL_PARAMETER_FORM_PREFIX,
                 "execute_disabled": bool(execute_disabled_reason),
                 "execute_disabled_reason": execute_disabled_reason,
-                "table_columns": table_columns,
+                "table_columns": editor_schema,
                 "write_template_tables": write_template_tables,
                 "write_template_operations": write_template_operations,
                 "write_create_table_template_sql": write_create_table_template_sql,
@@ -385,7 +404,7 @@ class ExecuteWriteView(BaseView):
         try:
             execute_write_kwargs = {"request": request}
             cursor = await db.execute_write(sql, params, **execute_write_kwargs)
-        except (QueryInterrupted, sqlite3.DatabaseError) as ex:
+        except sqlite3.DatabaseError as ex:
             message = str(ex)
             if wants_json:
                 return _block_framing(Response.error([message], 400))

datasette/views/index.py

@@ -2,11 +2,11 @@ import json
 
 from datasette.plugins import pm
 from datasette.utils import (
-    UNSTABLE_API_MESSAGE,
-    CustomJSONEncoder,
     add_cors_headers,
     await_me_maybe,
     make_slot_function,
+    CustomJSONEncoder,
+    UNSTABLE_API_MESSAGE,
 )
 from datasette.utils.asgi import Response
 from datasette.version import __version__
@@ -46,15 +46,15 @@ class IndexView(BaseView):
 
         databases = []
         # Iterate over allowed databases instead of all databases
-        for name, allowed_db in allowed_db_dict.items():
+        for name in allowed_db_dict.keys():
             db = self.ds.databases[name]
-            database_private = allowed_db.private
+            database_private = allowed_db_dict[name].private
 
             # Get allowed tables/views for this database
             allowed_for_db = tables_by_db.get(name, {})
 
             # Get table names from allowed set instead of db.table_names()
-            table_names = [child_name for child_name in allowed_for_db]
+            table_names = [child_name for child_name in allowed_for_db.keys()]
 
             hidden_table_names = set(await db.hidden_table_names())
 
@@ -99,7 +99,7 @@ class IndexView(BaseView):
                 # We will be sorting by number of relationships, so populate that field
                 all_foreign_keys = await db.get_all_foreign_keys()
                 for table, foreign_keys in all_foreign_keys.items():
-                    if table in tables:
+                    if table in tables.keys():
                         count = len(foreign_keys["incoming"] + foreign_keys["outgoing"])
                         tables[table]["num_relationships_for_sorting"] = count
 
@@ -121,7 +121,8 @@ class IndexView(BaseView):
             # Only add views if this is less than TRUNCATE_AT
             if len(tables_and_views_truncated) < TRUNCATE_AT:
                 num_views_to_add = TRUNCATE_AT - len(tables_and_views_truncated)
-                tables_and_views_truncated.extend(views[:num_views_to_add])
+                for view in views[:num_views_to_add]:
+                    tables_and_views_truncated.append(view)
 
             databases.append(
                 {

datasette/views/query_helpers.py

@@ -5,19 +5,6 @@ from datasette.resources import DatabaseResource
 from datasette.stored_queries import (
     StoredQuery,
 )
-from datasette.utils import (
-    InvalidSql,
-    escape_sqlite,
-    parse_size_limit,
-    path_from_row_pks,
-    sqlite3,
-    validate_sql_select,
-)
-from datasette.utils import (
-    named_parameters as derive_named_parameters,
-)
-from datasette.utils.asgi import Forbidden
-from datasette.utils.sql_analysis import Operation, SQLAnalysis
 from datasette.write_sql import (
     IgnoreWriteSqlOperation,
     QueryWriteRejected,
@@ -25,6 +12,17 @@ from datasette.write_sql import (
     decision_for_write_sql_operation,
     operation_is_write,
 )
+from datasette.utils import (
+    parse_size_limit,
+    named_parameters as derive_named_parameters,
+    escape_sqlite,
+    path_from_row_pks,
+    sqlite3,
+    validate_sql_select,
+    InvalidSql,
+)
+from datasette.utils.asgi import Forbidden
+from datasette.utils.sql_analysis import Operation, SQLAnalysis
 
 _query_name_re = re.compile(r"^[^/\.\n]+$")
 
@@ -93,7 +91,7 @@ def _as_optional_bool(value, name):
             return True
         if lowered in {"0", "false", "f", "no", "off"}:
             return False
-    raise QueryValidationError(f"{name} must be 0 or 1")
+    raise QueryValidationError("{} must be 0 or 1".format(name))
 
 
 def _query_list_limit(value, default, maximum):
@@ -173,7 +171,7 @@ async def _json_or_form_payload(request):
         try:
             return json.loads(body or b"{}"), True
         except json.JSONDecodeError as e:
-            raise QueryValidationError(f"Invalid JSON: {e}")
+            raise QueryValidationError("Invalid JSON: {}".format(e))
     return await request.post_vars(), False
 
 
@@ -194,7 +192,7 @@ async def _analyze_user_query(datasette, db, sql, *, actor):
     try:
         analysis = await db.analyze_sql(sql, params)
     except sqlite3.DatabaseError as ex:
-        raise QueryValidationError(f"Could not analyze query: {ex}") from ex
+        raise QueryValidationError("Could not analyze query: {}".format(ex)) from ex
 
     is_write = _analysis_is_write(analysis)
     if is_write:
@@ -295,7 +293,8 @@ def _coerce_execute_write_payload(data, is_json):
         for key, value in data.items():
             if key in {"sql", "csrftoken", "_json"}:
                 continue
-            key = key.removeprefix(SQL_PARAMETER_FORM_PREFIX)
+            if key.startswith(SQL_PARAMETER_FORM_PREFIX):
+                key = key[len(SQL_PARAMETER_FORM_PREFIX) :]
             params[key] = value
     if not isinstance(params, dict):
         raise QueryValidationError("params must be a dictionary")
@@ -315,7 +314,7 @@ async def _prepare_execute_write(datasette, db, sql, params, actor):
     try:
         analysis = await db.analyze_sql(sql, params)
     except sqlite3.DatabaseError as ex:
-        raise QueryValidationError(f"Could not analyze query: {ex}") from ex
+        raise QueryValidationError("Could not analyze query: {}".format(ex)) from ex
     if not _analysis_is_write(analysis):
         raise QueryValidationError(
             "Use /-/query for read-only SQL; this endpoint only executes writes"
@@ -497,7 +496,7 @@ async def _inserted_row_url(datasette, db, analysis, cursor):
     )
     try:
         result = await db.execute(
-            f"select {select} from {escape_sqlite(table)} where rowid = ?",
+            "select {} from {} where rowid = ?".format(select, escape_sqlite(table)),
             [lastrowid],
         )
     except sqlite3.DatabaseError:
@@ -635,3 +634,92 @@ async def _table_columns(datasette, database_name):
     for view_name in await db.view_names():
         table_columns[view_name] = []
     return table_columns
+
+
+def _column_completion(name, type_):
+    # A @codemirror/lang-sql Completion object for a single column. boost keeps
+    # columns ranked above bare SQL keywords in the autocomplete popup.
+    completion = {
+        "label": name,
+        "type": "property",
+        "boost": 10,
+    }
+    if type_:
+        completion["detail"] = type_
+    return completion
+
+
+async def _schema_tables(datasette, database_name, *, include_hidden=True):
+    """
+    Neutral introspection of a database's tables and views for SQL editors.
+
+    Returns an ordered list of dicts, one per table or view::
+
+        {"name": str, "view": bool,
+         "columns": [{"name": str, "type": str}, ...]}
+
+    ``type`` is the SQLite declared column type (empty string when the column
+    has no declared type). Regular-table columns come from the internal
+    ``catalog_columns`` catalog; views are absent from that catalog so their
+    columns are read directly via PRAGMA table_xinfo. Hidden tables (FTS shadow
+    tables and the like) are excluded unless ``include_hidden`` is True. This is
+    the shared, serialization-agnostic source for both ``_editor_schema`` (which
+    maps it to lang-sql Completion objects) and the ``/-/editor-schema.json``
+    endpoint (which emits it directly).
+    """
+    internal_db = datasette.get_internal_database()
+    result = await internal_db.execute(
+        "select table_name, name, type from catalog_columns where database_name = ?",
+        [database_name],
+    )
+    table_columns = {}
+    for row in result.rows:
+        table_columns.setdefault(row["table_name"], []).append(
+            {"name": row["name"], "type": row["type"]}
+        )
+    db = datasette.get_database(database_name)
+    hidden = set() if include_hidden else set(await db.hidden_table_names())
+    tables = []
+    for table_name, columns in table_columns.items():
+        if table_name in hidden:
+            continue
+        tables.append({"name": table_name, "view": False, "columns": columns})
+    # Views are not represented in catalog_columns, so pull their real columns
+    # directly (PRAGMA table_xinfo works against views too).
+    for view_name in await db.view_names():
+        columns = [
+            {"name": column.name, "type": column.type}
+            for column in await db.table_column_details(view_name)
+        ]
+        tables.append({"name": view_name, "view": True, "columns": columns})
+    return tables
+
+
+async def _editor_schema(datasette, database_name):
+    """
+    Build a lang-sql SQLNamespace for the CodeMirror SQL editor autocomplete.
+
+    Returns a dict keyed by table or view name. Table values are lists of
+    Completion objects (one per column, carrying the column's SQLite type as
+    ``detail``). Views are wrapped in a ``{"self": Completion, "children": [...]}``
+    container so the popup can label them as views while still completing their
+    real columns. See @codemirror/lang-sql >= 6.6 SQLNamespace / Completion.
+    """
+    schema = {}
+    for table in await _schema_tables(datasette, database_name, include_hidden=True):
+        completions = [
+            _column_completion(column["name"], column["type"])
+            for column in table["columns"]
+        ]
+        if table["view"]:
+            schema[table["name"]] = {
+                "self": {
+                    "label": table["name"],
+                    "type": "class",
+                    "detail": "view",
+                },
+                "children": completions,
+            }
+        else:
+            schema[table["name"]] = completions
+    return schema

datasette/views/row.py

@@ -8,37 +8,34 @@ from dataclasses import dataclass, field
 import markupsafe
 import sqlite_utils
 
+from datasette.utils.asgi import NotFound, Forbidden, PayloadTooLarge, Response
 from datasette.database import QueryInterrupted
-from datasette.events import DeleteRowEvent, UpdateRowEvent
+from datasette.events import UpdateRowEvent, DeleteRowEvent
-from datasette.extras import ExtraScope, extra_names_from_request
-from datasette.plugins import pm
 from datasette.resources import TableResource
+from .base import BaseView, DatasetteError, stream_csv
 from datasette.utils import (
-    CustomJSONEncoder,
-    CustomRow,
-    InvalidSql,
-    WriteJsonValueError,
     add_cors_headers,
     await_me_maybe,
     call_with_supported_arguments,
+    CustomJSONEncoder,
+    CustomRow,
     decode_write_json_row,
-    escape_sqlite,
+    InvalidSql,
     make_slot_function,
     path_from_row_pks,
     path_with_format,
     path_with_removed_args,
-    sqlite3,
-    tilde_decode,
     to_css_class,
+    escape_sqlite,
+    sqlite3,
+    WriteJsonValueError,
 )
-from datasette.utils.asgi import Forbidden, NotFound, PayloadTooLarge, Response
+from datasette.plugins import pm
-from datasette.utils.sqlite import check_structured_write_table
+from datasette.extras import extra_names_from_request, ExtraScope
-
 from . import Context, from_extra
-from .base import BaseView, DatasetteError, stream_csv
 from .table import (
-    _table_page_data,
     display_columns_and_rows,
+    _table_page_data,
     row_label_from_label_column,
 )
 from .table_extras import RowExtraContext, resolve_row_extras, table_extra_registry
@@ -139,12 +136,6 @@ class RowContext(Context):
     )
 
 
-async def _database_and_table_resource_from_request(datasette, request):
-    db = await datasette.resolve_database(request)
-    table = tilde_decode(request.url_vars["table"])
-    return db, table, TableResource(database=db.name, table=table)
-
-
 class RowView(BaseView):
     name = "row"
 
@@ -196,16 +187,16 @@ class RowView(BaseView):
                 data, extra_template_data, templates = response_or_template_contexts
         except QueryInterrupted as ex:
             raise DatasetteError(
-                textwrap.dedent(f"""
+                textwrap.dedent("""
                 <p>SQL query took too long. The time limit is controlled by the
                 <a href="https://docs.datasette.io/en/stable/settings.html#sql-time-limit-ms">sql_time_limit_ms</a>
                 configuration option.</p>
-                <textarea style="width: 90%">{markupsafe.escape(ex.sql)}</textarea>
+                <textarea style="width: 90%">{}</textarea>
                 <script>
                 let ta = document.querySelector("textarea");
                 ta.style.height = ta.scrollHeight + "px";
                 </script>
-            """).strip(),
+            """.format(markupsafe.escape(ex.sql))).strip(),
                 title="SQL Interrupted",
                 status=400,
                 message_is_html=True,
@@ -216,13 +207,15 @@ class RowView(BaseView):
             )
         except (sqlite3.OperationalError, InvalidSql) as e:
             raise DatasetteError(str(e), title="Invalid SQL", status=400)
+        except sqlite3.OperationalError as e:
+            raise DatasetteError(str(e))
         except DatasetteError:
             raise
 
         end = time.perf_counter()
         data["query_ms"] = (end - start) * 1000
 
-        if format_ in self.ds.renderers:
+        if format_ in self.ds.renderers.keys():
             # Dispatch request to the correct output format renderer
             # (CSV is not handled here due to streaming)
             result = call_with_supported_arguments(
@@ -265,13 +258,13 @@ class RowView(BaseView):
             if status_code is not None:
                 response.status = status_code
         else:
-            raise NotFound(f"Invalid format: {format_}")
+            raise NotFound("Invalid format: {}".format(format_))
 
         ttl = request.args.get("_ttl", None)
         if ttl is None or not ttl.isdigit():
             ttl = self.ds.setting("default_cache_ttl")
 
-        return self.set_response_headers(response, ttl, request)
+        return self.set_response_headers(response, ttl)
 
     async def html(self, request, data, extra_template_data, templates):
         extras = {}
@@ -380,54 +373,42 @@ class RowView(BaseView):
                 view_name=self.name,
             ),
             headers={
-                "Link": f'<{alternate_url_json}>; rel="alternate"; type="application/json+datasette"'
+                "Link": '<{}>; rel="alternate"; type="application/json+datasette"'.format(
+                    alternate_url_json
+                )
             },
         )
 
-    def set_response_headers(self, response, ttl, request=None):
+    def set_response_headers(self, response, ttl):
-        private = getattr(request, "_datasette_private_response", False)
         # Set far-future cache expiry
         if self.ds.cache_headers and response.status == 200:
-            if private:
+            ttl = int(ttl)
-                # This response is only visible to the current actor (denied
+            if ttl == 0:
-                # to anonymous requests), so it must never be stored by a
+                ttl_header = "no-cache"
-                # shared cache/CDN - and ?_ttl= must not override that.
-                response.headers["Cache-Control"] = "private, no-store"
-                response.headers["Vary"] = "Cookie"
             else:
-                ttl = int(ttl)
+                ttl_header = f"max-age={ttl}"
-                if ttl == 0:
+            response.headers["Cache-Control"] = ttl_header
-                    ttl_header = "no-cache"
-                else:
-                    ttl_header = f"max-age={ttl}"
-                response.headers["Cache-Control"] = ttl_header
         response.headers["Referrer-Policy"] = "no-referrer"
         if self.ds.cors:
             add_cors_headers(response.headers)
         return response
 
     async def data(self, request, default_labels=False):
-        db, table, resource = await _database_and_table_resource_from_request(
+        resolved = await self.ds.resolve_row(request)
-            self.ds, request
+        db = resolved.db
-        )
         database = db.name
+        table = resolved.table
+        pk_values = resolved.pk_values
 
-        # Check the URL resource before resolving the row, so a denied request
+        # Ensure user has permission to view this row
-        # cannot distinguish an existing primary key from a missing one.
         visible, private = await self.ds.check_visibility(
             request.actor,
             action="view-table",
-            resource=resource,
+            resource=TableResource(database=database, table=table),
         )
         if not visible:
             raise Forbidden("You do not have permission to view this table")
-        # Record whether this response is private (visible to this actor
-        # only) so set_response_headers() can set appropriate Cache-Control
-        # headers, regardless of which output format ends up being rendered.
-        request._datasette_private_response = private
 
-        resolved = await self.ds.resolve_row(request)
-        pk_values = resolved.pk_values
         results = await resolved.db.execute(
             resolved.sql, resolved.params, truncate=True
         )
@@ -504,8 +485,8 @@ class RowView(BaseView):
             for row in display_rows:
                 for cell in row:
                     if cell["column"] in pk_set:
-                        cell["value"] = markupsafe.Markup("<strong>{}</strong>").format(
+                        cell["value"] = markupsafe.Markup(
-                            cell["value"]
+                            "<strong>{}</strong>".format(cell["value"])
                         )
 
             label_column = await db.label_column_for_table(table) if is_table else None
@@ -519,7 +500,7 @@ class RowView(BaseView):
 
             row_action_label = pk_path
             if row_label and row_label != pk_path:
-                row_action_label = f"{pk_path} {row_label}"
+                row_action_label = "{} {}".format(pk_path, row_label)
 
             row_action_permissions = {}
             if is_table and db.is_mutable:
@@ -532,7 +513,7 @@ class RowView(BaseView):
             row_actions = []
             if row_action_permissions.get("update-row"):
                 attrs = {
-                    "aria-label": f"Edit row {row_action_label}",
+                    "aria-label": "Edit row {}".format(row_action_label),
                     "data-row": row_path,
                     "data-row-action": "edit",
                 }
@@ -548,7 +529,7 @@ class RowView(BaseView):
                 )
             if row_action_permissions.get("delete-row"):
                 attrs = {
-                    "aria-label": f"Delete row {row_action_label}",
+                    "aria-label": "Delete row {}".format(row_action_label),
                     "data-row": row_path,
                     "data-row-action": "delete",
                 }
@@ -578,7 +559,7 @@ class RowView(BaseView):
                 "private": private,
                 "columns": reordered_columns,
                 "foreign_key_tables": await self.foreign_key_tables(
-                    database, table, pk_values, actor=request.actor
+                    database, table, pk_values
                 ),
                 "database_color": db.color,
                 "display_columns": display_columns,
@@ -655,23 +636,12 @@ class RowView(BaseView):
             ),
         )
 
-    async def foreign_key_tables(self, database, table, pk_values, *, actor):
+    async def foreign_key_tables(self, database, table, pk_values):
         if len(pk_values) != 1:
             return []
         db = self.ds.databases[database]
         all_foreign_keys = await db.get_all_foreign_keys()
-        foreign_keys = []
+        foreign_keys = all_foreign_keys[table]["incoming"]
-        table_permissions = {}
-        for fk in all_foreign_keys[table]["incoming"]:
-            other_table = fk["other_table"]
-            if other_table not in table_permissions:
-                table_permissions[other_table] = await self.ds.allowed(
-                    action="view-table",
-                    resource=TableResource(database=database, table=other_table),
-                    actor=actor,
-                )
-            if table_permissions[other_table]:
-                foreign_keys.append(fk)
         if len(foreign_keys) == 0:
             return []
 
@@ -709,7 +679,7 @@ class RowView(BaseView):
                 key,
                 ",".join(pk_values),
             )
-            foreign_key_tables.append({**fk, "count": count, "link": link})
+            foreign_key_tables.append({**fk, **{"count": count, "link": link}})
         return foreign_key_tables
 
 
@@ -728,57 +698,38 @@ def _truncated_row_flash_label(label):
     return label[: ROW_FLASH_LABEL_MAX_LENGTH - 1] + "\u2026"
 
 
-async def _row_flash_message(
+async def _row_flash_message(db, action, resolved, row=None):
-    datasette, request, action, resolved, row=None, *, refresh_row=False
-):
     pk_label = ", ".join(resolved.pk_values)
-    # Mutation permission does not grant access to stored row labels.
+    label_column = await db.label_column_for_table(resolved.table)
-    if not await datasette.allowed(
-        action="view-table",
-        resource=TableResource(database=resolved.db.name, table=resolved.table),
-        actor=request.actor,
-    ):
-        return f"{action} row {pk_label}"
-
-    if refresh_row and row is None:
-        results = await resolved.db.execute(
-            resolved.sql, resolved.params, truncate=True
-        )
-        row = results.first()
-    label_column = await resolved.db.label_column_for_table(resolved.table)
     label = row_label_from_label_column(row or resolved.row, label_column)
     if label:
         label = _truncated_row_flash_label(label)
     if label and label != pk_label:
-        return f"{action} row {pk_label} ({label})"
+        return "{} row {} ({})".format(action, pk_label, label)
-    return f"{action} row {pk_label}"
+    return "{} row {}".format(action, pk_label)
 
 
 async def _resolve_row_and_check_permission(datasette, request, permission):
-    from datasette.app import DatabaseNotFound, RowNotFound, TableNotFound
+    from datasette.app import DatabaseNotFound, TableNotFound, RowNotFound
-
-    try:
-        _, _, resource = await _database_and_table_resource_from_request(
-            datasette, request
-        )
-    except DatabaseNotFound as e:
-        return False, Response.error([f"Database not found: {e.database_name}"], 404)
-
-    # Check the URL resource before resolving the row, so a denied request
-    # cannot distinguish an existing primary key from a missing one.
-    if not await datasette.allowed(
-        action=permission,
-        resource=resource,
-        actor=request.actor,
-    ):
-        return False, Response.error(["Permission denied"], 403)
 
     try:
         resolved = await datasette.resolve_row(request)
+    except DatabaseNotFound as e:
+        return False, Response.error(
+            ["Database not found: {}".format(e.database_name)], 404
+        )
     except TableNotFound as e:
-        return False, Response.error([f"Table not found: {e.table}"], 404)
+        return False, Response.error(["Table not found: {}".format(e.table)], 404)
     except RowNotFound as e:
-        return False, Response.error([f"Record not found: {e.pk_values}"], 404)
+        return False, Response.error(["Record not found: {}".format(e.pk_values)], 404)
+
+    # Ensure user has permission to delete this row
+    if not await datasette.allowed(
+        action=permission,
+        resource=TableResource(database=resolved.db.name, table=resolved.table),
+        actor=request.actor,
+    ):
+        return False, Response.error(["Permission denied"], 403)
 
     return True, resolved
 
@@ -798,13 +749,11 @@ class RowDeleteView(BaseView):
 
         # Delete table
         def delete_row(conn):
-            check_structured_write_table(conn, resolved.table)
             sqlite_utils.Database(conn)[resolved.table].delete(resolved.pk_values)
 
         try:
             await resolved.db.execute_write_fn(delete_row, request=request)
-        except Exception as e:  # noqa: BLE001
+        except Exception as e:
-            # TODO: narrow to expected write errors so Datasette bugs surface as 500s
             return Response.error([str(e)], 400)
 
         await self.ds.track_event(
@@ -820,7 +769,7 @@ class RowDeleteView(BaseView):
             table_url = self.ds.urls.table(resolved.db.name, resolved.table)
             self.ds.add_message(
                 request,
-                await _row_flash_message(self.ds, request, "Deleted", resolved),
+                await _row_flash_message(resolved.db, "Deleted", resolved),
                 self.ds.INFO,
             )
             return Response.json({"ok": True, "redirect": str(table_url)}, status=200)
@@ -844,7 +793,7 @@ class RowUpdateView(BaseView):
         try:
             data = await request.json()
         except json.JSONDecodeError as e:
-            return Response.error([f"Invalid JSON: {e}"])
+            return Response.error(["Invalid JSON: {}".format(e)])
         except PayloadTooLarge as e:
             return Response.error([str(e)], 413)
 
@@ -881,27 +830,18 @@ class RowUpdateView(BaseView):
             return Response.error(["Permission denied for alter-table"], 403)
 
         def update_row(conn):
-            check_structured_write_table(conn, resolved.table)
             sqlite_utils.Database(conn)[resolved.table].update(
                 resolved.pk_values, update, alter=alter
             )
 
         try:
             await resolved.db.execute_write_fn(update_row, request=request)
-        except Exception as e:  # noqa: BLE001
+        except Exception as e:
-            # TODO: narrow to expected write errors so Datasette bugs surface as 500s
             return Response.error([str(e)], 400)
 
         result = {"ok": True}
         returned_row = None
-        # Only read back and disclose the stored row if the actor is also
+        if data.get("return"):
-        # allowed to view this table - update-row alone must not be usable
-        # to read data the actor cannot otherwise see.
-        if data.get("return") and await self.ds.allowed(
-            action="view-table",
-            resource=TableResource(database=resolved.db.name, table=resolved.table),
-            actor=request.actor,
-        ):
             results = await resolved.db.execute(
                 resolved.sql, resolved.params, truncate=True
             )
@@ -918,15 +858,16 @@ class RowUpdateView(BaseView):
         )
 
         if request.args.get("_message"):
+            message_row = returned_row
+            if message_row is None:
+                results = await resolved.db.execute(
+                    resolved.sql, resolved.params, truncate=True
+                )
+                message_row = results.first()
             self.ds.add_message(
                 request,
                 await _row_flash_message(
-                    self.ds,
+                    resolved.db, "Updated", resolved, row=message_row
-                    request,
-                    "Updated",
-                    resolved,
-                    row=returned_row,
-                    refresh_row=True,
                 ),
                 self.ds.INFO,
             )

datasette/views/special.py

@@ -1,25 +1,23 @@
 import json
 import logging
-import secrets
-import urllib
-
-from datasette.events import CreateTokenEvent, LoginEvent, LogoutEvent
 from datasette.jump import JumpSQL, namespace_sql_params
 from datasette.plugins import pm
+from datasette.events import LogoutEvent, LoginEvent, CreateTokenEvent
 from datasette.resources import DatabaseResource, TableResource
+from datasette.utils.asgi import Response, Forbidden
 from datasette.utils import (
     UNSTABLE_API_MESSAGE,
     actor_matches_allow,
+    parse_size_limit,
     add_cors_headers,
     await_me_maybe,
     error_body,
-    parse_size_limit,
-    tilde_decode,
     tilde_encode,
+    tilde_decode,
 )
-from datasette.utils.asgi import Forbidden, Response
-
 from .base import BaseView, View
+import secrets
+import urllib
 
 logger = logging.getLogger(__name__)
 
@@ -181,7 +179,9 @@ class AutocompleteDebugView(BaseView):
                     )
                     context.update(
                         {
-                            "autocomplete_url": f"{self.ds.urls.table(database_name, table_name)}/-/autocomplete",
+                            "autocomplete_url": "{}/-/autocomplete".format(
+                                self.ds.urls.table(database_name, table_name)
+                            ),
                             "label_column": await db.label_column_for_table(table_name),
                         }
                     )
@@ -311,7 +311,6 @@ class AllowedResourcesView(BaseView):
     has_json_alternate = False
 
     async def get(self, request):
-        await self.ds.ensure_permission(action="view-instance", actor=request.actor)
         await self.ds.refresh_schemas()
 
         # Check if user has permissions-debug (to show sensitive fields)
@@ -421,11 +420,8 @@ class AllowedResourcesView(BaseView):
                     row["reason"] = resource.reasons
 
                 allowed_rows.append(row)
-        except Exception:  # noqa: BLE001
+        except Exception:
-            # Returns empty results if the catalog tables don't exist yet, but
+            # If catalog tables don't exist yet, return empty results
-            # also swallows the AttributeError raised for instance-level actions
-            # such as view-instance, which have no resource_class.
-            # TODO: handle that case explicitly and narrow this to sqlite3.Error
             return (
                 {
                     "ok": True,
@@ -527,7 +523,7 @@ class PermissionRulesView(BaseView):
 
         from datasette.utils.actions_sql import build_permission_rules_sql
 
-        union_sql, union_params, _restriction_sqls = await build_permission_rules_sql(
+        union_sql, union_params, restriction_sqls = await build_permission_rules_sql(
             self.ds, actor, action
         )
         await self.ds.refresh_schemas()
@@ -604,7 +600,7 @@ class PermissionRulesView(BaseView):
 
 
 async def _check_permission_for_actor(ds, action, parent, child, actor):
-    """Shared logic for checking and explaining a permission decision."""
+    """Shared logic for checking permissions. Returns a dict with check results."""
     if action not in ds.actions:
         return error_body(f"Unknown action: {action}", 404), 404
 
@@ -633,28 +629,15 @@ async def _check_permission_for_actor(ds, action, parent, child, actor):
 
     allowed = await ds.allowed(action=action, resource=resource_obj, actor=actor)
 
-    from datasette.utils.actions_sql import explain_permission_for_resource
-
-    explanation = await explain_permission_for_resource(
-        datasette=ds,
-        actor=actor,
-        action=action,
-        parent=parent,
-        child=child,
-    )
-
     response = {
         "ok": True,
-        "unstable": UNSTABLE_API_MESSAGE,
         "action": action,
         "allowed": bool(allowed),
-        "actor": actor,
         "resource": {
             "parent": parent,
             "child": child,
             "path": _resource_path(parent, child),
         },
-        "explanation": explanation,
     }
 
     if actor and "id" in actor:
@@ -672,25 +655,11 @@ class PermissionCheckView(BaseView):
         as_format = request.url_vars.get("format")
 
         if not as_format:
-            actions = [
-                {
-                    "name": action.name,
-                    "description": action.description,
-                    "takes_parent": action.takes_parent,
-                    "takes_child": action.takes_child,
-                    "also_requires": action.also_requires,
-                }
-                for action in sorted(
-                    self.ds.actions.values(), key=lambda action: action.name
-                )
-            ]
             return await self.render(
                 ["debug_check.html"],
                 request,
                 {
-                    "actions": actions,
+                    "sorted_actions": sorted(self.ds.actions.keys()),
-                    "actor_json": request.args.get("actor")
-                    or json.dumps(request.actor, indent=2),
                     "has_debug_permission": True,
                 },
             )
@@ -702,18 +671,9 @@ class PermissionCheckView(BaseView):
 
         parent = request.args.get("parent")
         child = request.args.get("child")
-        actor = request.actor
-        actor_json = request.args.get("actor")
-        if actor_json is not None:
-            try:
-                actor = json.loads(actor_json)
-            except json.JSONDecodeError as ex:
-                return Response.error(f"Invalid actor JSON: {ex}", 400)
-            if actor is not None and not isinstance(actor, dict):
-                return Response.error("actor must be a JSON object or null", 400)
 
         response, status = await _check_permission_for_actor(
-            self.ds, action, parent, child, actor
+            self.ds, action, parent, child, request.actor
         )
         return Response.json(response, status=status)
 
@@ -797,8 +757,6 @@ class CreateTokenView(BaseView):
             raise Forbidden(
                 "Token authentication cannot be used to create additional tokens"
             )
-        if "_r" in request.actor:
-            raise Forbidden("Restricted actors cannot create API tokens")
 
     async def shared(self, request):
         self.check_permission(request)
@@ -876,11 +834,6 @@ class CreateTokenView(BaseView):
                 else:
                     errors.append("Invalid expire duration unit")
 
-        if errors:
-            context = await self.shared(request)
-            context["errors"] = errors
-            return await self.render(["create_token.html"], request, context)
-
         # Are there any restrictions?
         from datasette.tokens import TokenRestrictions
 
@@ -947,7 +900,7 @@ class ApiExplorerView(BaseView):
                 tables.append({"name": table, "links": table_links})
                 table_links.append(
                     {
-                        "label": f"Get rows for {table}",
+                        "label": "Get rows for {}".format(table),
                         "method": "GET",
                         "path": self.ds.urls.table(name, table, format="json"),
                     }
@@ -967,7 +920,7 @@ class ApiExplorerView(BaseView):
                             {
                                 "path": self.ds.urls.table(name, table) + "/-/insert",
                                 "method": "POST",
-                                "label": f"Insert rows into {table}",
+                                "label": "Insert rows into {}".format(table),
                                 "json": {
                                     "rows": [
                                         {
@@ -981,7 +934,7 @@ class ApiExplorerView(BaseView):
                             {
                                 "path": self.ds.urls.table(name, table) + "/-/upsert",
                                 "method": "POST",
-                                "label": f"Upsert rows into {table}",
+                                "label": "Upsert rows into {}".format(table),
                                 "json": {
                                     "rows": [
                                         {
@@ -1011,7 +964,7 @@ class ApiExplorerView(BaseView):
                     table_links.append(
                         {
                             "path": self.ds.urls.table(name, table) + "/-/drop",
-                            "label": f"Drop table {table}",
+                            "label": "Drop table {}".format(table),
                             "json": {"confirm": False},
                             "method": "POST",
                         }
@@ -1028,7 +981,7 @@ class ApiExplorerView(BaseView):
                 database_links.append(
                     {
                         "path": self.ds.urls.database(name) + "/-/create",
-                        "label": f"Create table in {name}",
+                        "label": "Create table in {}".format(name),
                         "json": {
                             "table": "new_table",
                             "columns": [
@@ -1269,21 +1222,14 @@ class SchemaBaseView(BaseView):
 
     has_json_alternate = False
 
-    async def get_database_schema(self, database_name, actor):
+    async def get_database_schema(self, database_name):
         """Get schema SQL for a database."""
         db = self.ds.databases[database_name]
-        allowed_tables_page = await self.ds.allowed_resources(
-            "view-table", actor, parent=database_name
-        )
-        allowed_table_names = {
-            resource.child async for resource in allowed_tables_page.all()
-        }
         result = await db.execute(
-            "select tbl_name, sql from sqlite_master where sql is not null"
+            "select group_concat(sql, ';' || CHAR(10)) as schema from sqlite_master where sql is not null"
-        )
-        return ";\n".join(
-            row["sql"] for row in result.rows if row["tbl_name"] in allowed_table_names
         )
+        row = result.first()
+        return row["schema"] if row and row["schema"] else ""
 
     def format_json_response(self, data):
         """Format data as JSON response with CORS headers if needed."""
@@ -1345,7 +1291,7 @@ class InstanceSchemaView(SchemaBaseView):
         # Get schema for each database
         schemas = []
         for database_name in allowed_databases:
-            schema = await self.get_database_schema(database_name, request.actor)
+            schema = await self.get_database_schema(database_name)
             schemas.append({"database": database_name, "schema": schema})
 
         if format_ == "json":
@@ -1386,7 +1332,7 @@ class DatabaseSchemaView(SchemaBaseView):
         if database_name not in self.ds.databases:
             return self.format_error_response("Database not found", format_)
 
-        schema = await self.get_database_schema(database_name, request.actor)
+        schema = await self.get_database_schema(database_name)
 
         if format_ == "json":
             return self.format_json_response(
@@ -1399,6 +1345,59 @@ class DatabaseSchemaView(SchemaBaseView):
             return await self.format_html_response(request, schemas)
 
 
+class DatabaseEditorSchemaView(BaseView):
+    """
+    JSON introspection of a database's tables, views and columns shaped for SQL
+    editor autocomplete consumers (the CodeMirror ``<datasette-sql-editor>``
+    component and external clients such as datasette-paper).
+
+    Distinct from :class:`DatabaseSchemaView` (``/<db>/-/schema.json``), which
+    returns the raw DDL as a SQL string gated on ``view-database`` alone. This
+    endpoint returns a neutral structured payload and is gated on both
+    ``view-database`` and ``execute-sql`` — the same permissions as the inline
+    editor schema handed to the SQL query page.
+    """
+
+    name = "database_editor_schema"
+    has_json_alternate = False
+
+    async def get(self, request):
+        from .query_helpers import _schema_tables
+
+        database_name = request.url_vars["database"]
+
+        # view-database is checked first so actors without it cannot
+        # distinguish an existing database from a missing one, and a denied
+        # request only ever leaks the permission action name, never table names.
+        await self.ds.ensure_permission(
+            action="view-database",
+            resource=DatabaseResource(database=database_name),
+            actor=request.actor,
+        )
+        if database_name not in self.ds.databases:
+            headers = {}
+            if self.ds.cors:
+                add_cors_headers(headers)
+            return Response.json(
+                error_body("Database not found", 404), status=404, headers=headers
+            )
+        await self.ds.ensure_permission(
+            action="execute-sql",
+            resource=DatabaseResource(database=database_name),
+            actor=request.actor,
+        )
+
+        await self.ds.refresh_schemas()
+        tables = await _schema_tables(self.ds, database_name, include_hidden=False)
+
+        headers = {}
+        if self.ds.cors:
+            add_cors_headers(headers)
+        return Response.json(
+            {"database": database_name, "tables": tables}, headers=headers
+        )
+
+
 class TableSchemaView(SchemaBaseView):
     """
     Displays schema for a specific table.
@@ -1425,8 +1424,7 @@ class TableSchemaView(SchemaBaseView):
         # Get schema for the table
         db = self.ds.databases[database_name]
         result = await db.execute(
-            "select sql from sqlite_master where name = ? "
+            "select sql from sqlite_master where name = ? and sql is not null",
-            "and type in ('table', 'view') and sql is not null",
             [table_name],
         )
         row = result.first()

datasette/views/stored_queries.py

@@ -124,7 +124,7 @@ class QueryListView(BaseView):
             pairs.append(("_next", page.next))
             next_url = self.ds.absolute_url(
                 request,
-                f"{request.path}?{urlencode(pairs)}",
+                "{}?{}".format(request.path, urlencode(pairs)),
             )
 
         current_filters = {
@@ -279,7 +279,7 @@ class QueryCreateView(BaseView):
             ),
         )
         response.status = status
-        return _block_framing(response)
+        return response
 
     async def get(self, request):
         db = await self.ds.resolve_database(request)
@@ -415,7 +415,7 @@ class QueryDefinitionView(BaseView):
         query_name = tilde_decode(request.url_vars["query"])
         query = await self.ds.get_query(db.name, query_name)
         if query is None:
-            return Response.error([f"Query not found: {query_name}"], 404)
+            return Response.error(["Query not found: {}".format(query_name)], 404)
         if not await self.ds.allowed(
             action="view-query",
             resource=QueryResource(db.name, query_name),
@@ -439,7 +439,7 @@ class QueryUpdateView(BaseView):
         query_name = tilde_decode(request.url_vars["query"])
         existing = await self.ds.get_query(db.name, query_name)
         if existing is None:
-            return Response.error([f"Query not found: {query_name}"], 404)
+            return Response.error(["Query not found: {}".format(query_name)], 404)
         if not await self.ds.allowed(
             action="update-query",
             resource=QueryResource(db.name, query_name),
@@ -527,12 +527,12 @@ class QueryEditView(BaseView):
             ),
         )
         response.status = status
-        return _block_framing(response)
+        return response
 
     async def get(self, request):
         db, query_name, existing = await self._load(request)
         if existing is None:
-            return Response.error([f"Query not found: {query_name}"], 404)
+            return Response.error(["Query not found: {}".format(query_name)], 404)
         await self.ds.ensure_permission(
             action="update-query",
             resource=QueryResource(db.name, query_name),
@@ -545,7 +545,7 @@ class QueryEditView(BaseView):
     async def post(self, request):
         db, query_name, existing = await self._load(request)
         if existing is None:
-            return Response.error([f"Query not found: {query_name}"], 404)
+            return Response.error(["Query not found: {}".format(query_name)], 404)
         if not await self.ds.allowed(
             action="update-query",
             resource=QueryResource(db.name, query_name),
@@ -629,7 +629,7 @@ class QueryDeleteView(BaseView):
     async def get(self, request):
         db, query_name, existing = await self._load(request)
         if existing is None:
-            return Response.error([f"Query not found: {query_name}"], 404)
+            return Response.error(["Query not found: {}".format(query_name)], 404)
         await self.ds.ensure_permission(
             action="delete-query",
             resource=QueryResource(db.name, query_name),
@@ -639,23 +639,21 @@ class QueryDeleteView(BaseView):
             return Response.error(
                 ["Trusted queries cannot be deleted using the API"], 403
             )
-        return _block_framing(
+        return await self.render(
-            await self.render(
+            ["query_delete.html"],
-                ["query_delete.html"],
+            request,
-                request,
+            {
-                {
+                "database": db.name,
-                    "database": db.name,
+                "database_color": db.color,
-                    "database_color": db.color,
+                "query": stored_query_to_dict(existing),
-                    "query": stored_query_to_dict(existing),
+                "query_url": self.ds.urls.table(db.name, query_name),
-                    "query_url": self.ds.urls.table(db.name, query_name),
+            },
-                },
-            )
         )
 
     async def post(self, request):
         db, query_name, existing = await self._load(request)
         if existing is None:
-            return Response.error([f"Query not found: {query_name}"], 404)
+            return Response.error(["Query not found: {}".format(query_name)], 404)
         if not await self.ds.allowed(
             action="delete-query",
             resource=QueryResource(db.name, query_name),
@@ -667,13 +665,13 @@ class QueryDeleteView(BaseView):
                 ["Trusted queries cannot be deleted using the API"], 403
             )
 
-        _data, is_json = await _json_or_form_payload(request)
+        data, is_json = await _json_or_form_payload(request)
         await self.ds.remove_query(db.name, query_name)
         if is_json:
             return Response.json({"ok": True})
         self.ds.add_message(
             request,
-            f"Query “{existing.title or query_name}” deleted",
+            "Query “{}” deleted".format(existing.title or query_name),
             self.ds.INFO,
         )
         return Response.redirect(self.ds.urls.path(self.ds.urls.database(db.name)))

datasette/views/table.py

@@ -3,51 +3,48 @@ import itertools
 import json
 import urllib
 import urllib.parse
-from dataclasses import dataclass, field
 
 import markupsafe
-import sqlite_utils
 
-from datasette import tracer
 from datasette.column_types import SQLiteType
-from datasette.database import QueryInterrupted
+from datasette.extras import extra_names_from_request
+from datasette.plugins import pm
 from datasette.events import (
     AlterTableEvent,
     DropTableEvent,
     InsertRowsEvent,
     UpsertRowsEvent,
 )
-from datasette.extras import ExtraScope, extra_names_from_request
+from datasette.database import QueryInterrupted
-from datasette.filters import Filters
+from datasette import tracer
-from datasette.plugins import pm
 from datasette.resources import DatabaseResource, TableResource
 from datasette.utils import (
-    CustomJSONEncoder,
-    CustomRow,
-    InvalidSql,
-    WriteJsonValueError,
     add_cors_headers,
-    append_querystring,
     await_me_maybe,
     call_with_supported_arguments,
+    CustomJSONEncoder,
+    CustomRow,
+    append_querystring,
     compound_keys_after_sql,
     decode_write_json_rows,
+    format_bytes,
+    make_slot_function,
+    tilde_encode,
     escape_sqlite,
     filters_should_redirect,
-    format_bytes,
     is_url,
-    make_slot_function,
     path_from_row_pks,
     path_with_added_args,
     path_with_format,
     path_with_removed_args,
     path_with_replaced_args,
-    sqlite3,
-    tilde_encode,
     to_css_class,
     truncate_url,
     urlsafe_components,
     value_as_boolean,
+    InvalidSql,
+    WriteJsonValueError,
+    sqlite3,
 )
 from datasette.utils.asgi import (
     BadRequest,
@@ -57,8 +54,11 @@ from datasette.utils.asgi import (
     Request,
     Response,
 )
-from datasette.utils.sqlite import check_structured_write_table
+from datasette.filters import Filters
+import sqlite_utils
+from dataclasses import dataclass, field
 
+from datasette.extras import ExtraScope
 from . import Context, from_extra
 from .base import BaseView, DatasetteError, stream_csv
 from .database import QueryView
@@ -536,7 +536,7 @@ async def _table_insert_ui(
         columns.append(column_data)
 
     data = {
-        "path": f"{datasette.urls.table(database_name, table_name)}/-/insert",
+        "path": "{}/-/insert".format(datasette.urls.table(database_name, table_name)),
         "tableName": table_name,
         "columns": columns,
         "bulkColumns": bulk_columns,
@@ -544,8 +544,8 @@ async def _table_insert_ui(
         "maxInsertRows": datasette.setting("max_insert_rows"),
     }
     if can_update:
-        data["upsertPath"] = (
+        data["upsertPath"] = "{}/-/upsert".format(
-            f"{datasette.urls.table(database_name, table_name)}/-/upsert"
+            datasette.urls.table(database_name, table_name)
         )
     return data
 
@@ -604,7 +604,7 @@ async def _table_alter_ui(
         columns.append(column_data)
 
     data = {
-        "path": f"{datasette.urls.table(database_name, table_name)}/-/alter",
+        "path": "{}/-/alter".format(datasette.urls.table(database_name, table_name)),
         "tableName": table_name,
         "columns": columns,
         "primaryKeys": pks,
@@ -630,7 +630,9 @@ async def _table_alter_ui(
         actor=request.actor,
     )
     if can_drop_table:
-        data["dropPath"] = f"{datasette.urls.table(database_name, table_name)}/-/drop"
+        data["dropPath"] = "{}/-/drop".format(
+            datasette.urls.table(database_name, table_name)
+        )
     return data
 
 
@@ -726,10 +728,12 @@ async def display_columns_and_rows(
             row_label = row_label_from_label_column(row, label_column)
             row_action_label = pk_path
             if row_label and row_label != pk_path:
-                row_action_label = f"{pk_path} {row_label}"
+                row_action_label = "{} {}".format(pk_path, row_label)
             table_path = datasette.urls.table(database_name, table_name)
-            row_link = (
+            row_link = '<a href="{table_path}/{flat_pks_quoted}">{flat_pks}</a>'.format(
-                f'<a href="{table_path}/{row_path}">{markupsafe.escape(pk_path)!s}</a>'
+                table_path=table_path,
+                flat_pks=str(markupsafe.escape(pk_path)),
+                flat_pks_quoted=row_path,
             )
             edit_icon = (
                 '<svg class="row-inline-action-icon" aria-hidden="true" '
@@ -756,16 +760,22 @@ async def display_columns_and_rows(
             if row_action_permissions.get("update-row"):
                 row_actions.append(
                     '<button type="button" class="row-inline-action row-inline-action-edit" '
-                    f'aria-label="Edit row {markupsafe.escape(row_action_label)}" title="Edit row" '
+                    'aria-label="Edit row {row_label}" title="Edit row" '
                     'data-row-action="edit">'
-                    f"{edit_icon}</button>"
+                    "{edit_icon}</button>".format(
+                        edit_icon=edit_icon,
+                        row_label=markupsafe.escape(row_action_label),
+                    )
                 )
             if row_action_permissions.get("delete-row"):
                 row_actions.append(
                     '<button type="button" class="row-inline-action row-inline-action-delete" '
-                    f'aria-label="Delete row {markupsafe.escape(row_action_label)}" title="Delete row" '
+                    'aria-label="Delete row {row_label}" title="Delete row" '
                     'data-row-action="delete">'
-                    f"{delete_icon}</button>"
+                    "{delete_icon}</button>".format(
+                        delete_icon=delete_icon,
+                        row_label=markupsafe.escape(row_action_label),
+                    )
                 )
             if row_actions:
                 row_link = (
@@ -833,7 +843,11 @@ async def display_columns_and_rows(
                             path_from_row_pks(row, pks, not pks),
                             column,
                         ),
-                        (f' title="{formatted}"' if "bytes" not in formatted else ""),
+                        (
+                            ' title="{}"'.format(formatted)
+                            if "bytes" not in formatted
+                            else ""
+                        ),
                         len(value),
                         "" if len(value) == 1 else "s",
                     )
@@ -945,7 +959,7 @@ class TableInsertView(BaseView):
         try:
             data = await request.json()
         except json.JSONDecodeError as e:
-            return _errors([f"Invalid JSON: {e}"])
+            return _errors(["Invalid JSON: {}".format(e)])
         if not isinstance(data, dict):
             return _errors(["JSON must be a dictionary"])
         keys = data.keys()
@@ -973,7 +987,9 @@ class TableInsertView(BaseView):
         # Does this exceed max_insert_rows?
         max_insert_rows = self.ds.setting("max_insert_rows")
         if len(rows) > max_insert_rows:
-            return _errors([f"Too many rows, maximum allowed is {max_insert_rows}"])
+            return _errors(
+                ["Too many rows, maximum allowed is {}".format(max_insert_rows)]
+            )
 
         # Validate other parameters
         extras = {
@@ -1031,7 +1047,7 @@ class TableInsertView(BaseView):
         # Table must exist (may handle table creation in the future)
         db = self.ds.get_database(database_name)
         if not await db.table_exists(table_name):
-            return Response.error([f"Table not found: {table_name}"], 404)
+            return Response.error(["Table not found: {}".format(table_name)], 404)
 
         if upsert:
             # Must have insert-row AND upsert-row permissions
@@ -1127,7 +1143,6 @@ class TableInsertView(BaseView):
             row_pk_values_for_later = [tuple(row[pk] for pk in pks) for row in rows]
 
         def insert_or_upsert_rows(conn):
-            check_structured_write_table(conn, table_name)
             table = sqlite_utils.Database(conn)[table_name]
             kwargs = {}
             if upsert:
@@ -1155,36 +1170,20 @@ class TableInsertView(BaseView):
 
         try:
             rows = await db.execute_write_fn(insert_or_upsert_rows, request=request)
-        except Exception as e:  # noqa: BLE001
+        except Exception as e:
-            # TODO: narrow to expected write errors so Datasette bugs surface as 500s
             return Response.error([str(e)])
         result = {"ok": True}
-        # Only read back and disclose stored rows if the actor is also
-        # allowed to view this table - insert-row/update-row alone must
-        # not be usable to read data the actor cannot otherwise see.
-        if should_return and not await self.ds.allowed(
-            action="view-table",
-            resource=TableResource(database=database_name, table=table_name),
-            actor=request.actor,
-        ):
-            should_return = False
         if should_return:
             if upsert:
                 # Fetch based on initial input IDs
                 where_clause = " OR ".join(
-                    [
+                    ["({})".format(" AND ".join("{} = ?".format(pk) for pk in pks))]
-                        "({})".format(
-                            " AND ".join(f"{escape_sqlite(pk)} = ?" for pk in pks)
-                        )
-                    ]
                     * len(row_pk_values_for_later)
                 )
                 args = list(itertools.chain.from_iterable(row_pk_values_for_later))
                 fetched_rows = await db.execute(
-                    "select {}* from {} where {}".format(
+                    "select {}* from [{}] where {}".format(
-                        "rowid, " if pks == ["rowid"] else "",
+                        "rowid, " if pks == ["rowid"] else "", table_name, where_clause
-                        escape_sqlite(table_name),
-                        where_clause,
                     ),
                     args,
                 )
@@ -1268,7 +1267,7 @@ class TableSetColumnTypeView(BaseView):
         try:
             data = await request.json()
         except json.JSONDecodeError as e:
-            return Response.error([f"Invalid JSON: {e}"], 400)
+            return Response.error(["Invalid JSON: {}".format(e)], 400)
         except PayloadTooLarge as e:
             return Response.error([str(e)], 413)
 
@@ -1295,7 +1294,7 @@ class TableSetColumnTypeView(BaseView):
             database_name, table_name
         )
         if column not in column_details:
-            return Response.error([f"Column not found: {column}"], 400)
+            return Response.error(["Column not found: {}".format(column)], 400)
 
         column_type_data = data["column_type"]
         if column_type_data is None:
@@ -1336,7 +1335,7 @@ class TableSetColumnTypeView(BaseView):
             return Response.error(['"column_type.config" must be a dictionary'], 400)
 
         if column_type not in self.ds._column_types:
-            return Response.error([f"Unknown column type: {column_type}"], 400)
+            return Response.error(["Unknown column type: {}".format(column_type)], 400)
 
         try:
             await self.ds.set_column_type(
@@ -1374,7 +1373,7 @@ class TableDropView(BaseView):
         # Table must exist
         db = self.ds.get_database(database_name)
         if not await db.table_exists(table_name):
-            return Response.error([f"Table not found: {table_name}"], 404)
+            return Response.error(["Table not found: {}".format(table_name)], 404)
         if not await self.ds.allowed(
             action="drop-table",
             resource=TableResource(database=database_name, table=table_name),
@@ -1399,9 +1398,7 @@ class TableDropView(BaseView):
                     "database": database_name,
                     "table": table_name,
                     "row_count": (
-                        await db.execute(
+                        await db.execute("select count(*) from [{}]".format(table_name))
-                            f"select count(*) from {escape_sqlite(table_name)}"
-                        )
                     ).single_value(),
                     "message": 'Pass "confirm": true to confirm',
                 },
@@ -1410,9 +1407,7 @@ class TableDropView(BaseView):
 
         # Drop table
         def drop_table(conn):
-            table = sqlite_utils.Database(conn)[table_name]
+            sqlite_utils.Database(conn)[table_name].drop()
-            table.disable_fts()
-            table.drop()
 
         await db.execute_write_fn(drop_table, request=request)
         await self.ds.track_event(
@@ -1422,7 +1417,7 @@ class TableDropView(BaseView):
         )
         self.ds.add_message(
             request,
-            f"Table {table_name} dropped",
+            "Table {} dropped".format(table_name),
             self.ds.WARNING,
         )
         return Response.json({"ok": True}, status=200)
@@ -1482,28 +1477,32 @@ def _prefix_range_end(value):
 
 
 def _autocomplete_like(column):
-    return f"{escape_sqlite(column)} like :like escape char(92)"
+    return "{} like :like escape char(92)".format(escape_sqlite(column))
 
 
 def _autocomplete_prefix_like(column):
-    return f"{escape_sqlite(column)} like :prefix escape char(92)"
+    return "{} like :prefix escape char(92)".format(escape_sqlite(column))
 
 
 def _autocomplete_order_by(pks, label_column, exact_pk, label_matches_first=True):
     clauses = []
     if exact_pk:
         clauses.append(
-            f"case when cast({escape_sqlite(pks[0])} as text) = :q then 0 else 1 end"
+            "case when cast({} as text) = :q then 0 else 1 end".format(
+                escape_sqlite(pks[0])
+            )
         )
     if label_column:
         label_like = _autocomplete_like(label_column)
         if label_matches_first:
-            clauses.append(f"case when {label_like} then 0 else 1 end")
+            clauses.append("case when {} then 0 else 1 end".format(label_like))
         clauses.append(
-            f"case when {label_like} then length(cast({escape_sqlite(label_column)} as text)) end"
+            "case when {} then length(cast({} as text)) end".format(
+                label_like, escape_sqlite(label_column)
+            )
         )
     else:
-        clauses.append(f"length(cast({escape_sqlite(pks[0])} as text))")
+        clauses.append("length(cast({} as text))".format(escape_sqlite(pks[0])))
     clauses.extend(escape_sqlite(pk) for pk in pks)
     return ", ".join(clauses)
 
@@ -1570,8 +1569,8 @@ class TableAutocompleteView(BaseView):
             return Response.json({"ok": True, "rows": []})
         params = {
             "q": q,
-            "like": f"%{_escape_like(q)}%",
+            "like": "%{}%".format(_escape_like(q)),
-            "prefix": f"{_escape_like(q)}%",
+            "prefix": "{}%".format(_escape_like(q)),
         }
 
         like_columns = pks[:]
@@ -1585,13 +1584,18 @@ class TableAutocompleteView(BaseView):
             where_sql = "1 = 1"
             order_by = _autocomplete_initial_order_by(pks)
 
-        sql = f"""
+        sql = """
             select {select_sql}
-            from {escape_sqlite(table_name)}
+            from {table}
-            where {where_sql}
+            where {where}
             order by {order_by}
             limit 10
-        """
+        """.format(
+            select_sql=select_sql,
+            table=escape_sqlite(table_name),
+            where=where_sql,
+            order_by=order_by,
+        )
 
         try:
             results = await db.execute(
@@ -1603,14 +1607,21 @@ class TableAutocompleteView(BaseView):
             if prefix_end:
                 params["prefix_end"] = prefix_end
                 first_pk = escape_sqlite(pks[0])
-                fallback_where = f"{first_pk} >= :q and {first_pk} < :prefix_end and {fallback_where}"
+                fallback_where = (
-            fallback_sql = f"""
+                    "{first_pk} >= :q and {first_pk} < :prefix_end and {like}"
+                ).format(first_pk=first_pk, like=fallback_where)
+            fallback_sql = """
                 select {select_sql}
-                from {escape_sqlite(table_name)}
+                from {table}
-                where {fallback_where}
+                where {where}
-                order by {_autocomplete_pk_order_by(pks)}
+                order by {order_by}
                 limit 10
-            """
+            """.format(
+                select_sql=select_sql,
+                table=escape_sqlite(table_name),
+                where=fallback_where,
+                order_by=_autocomplete_pk_order_by(pks),
+            )
             try:
                 results = await db.execute(
                     fallback_sql,
@@ -1714,22 +1725,13 @@ async def table_view(datasette, request):
     if ttl is None or not ttl.isdigit():
         ttl = datasette.setting("default_cache_ttl")
 
-    private = getattr(request, "_datasette_private_response", False)
-
     if datasette.cache_headers and response.status == 200:
-        if private:
+        ttl = int(ttl)
-            # This response is only visible to the current actor (denied to
+        if ttl == 0:
-            # anonymous requests), so it must never be stored by a shared
+            ttl_header = "no-cache"
-            # cache/CDN - and ?_ttl= must not be able to override that.
-            response.headers["Cache-Control"] = "private, no-store"
-            response.headers["Vary"] = "Cookie"
         else:
-            ttl = int(ttl)
+            ttl_header = f"max-age={ttl}"
-            if ttl == 0:
+        response.headers["Cache-Control"] = ttl_header
-                ttl_header = "no-cache"
-            else:
-                ttl_header = f"max-age={ttl}"
-            response.headers["Cache-Control"] = ttl_header
 
     # Referrer policy
     response.headers["Referrer-Policy"] = "no-referrer"
@@ -1775,7 +1777,7 @@ async def table_view_traced(datasette, request):
     )
     if isinstance(view_data, Response):
         return view_data
-    data, rows, columns, _expanded_columns, sql, next_url = view_data
+    data, rows, columns, expanded_columns, sql, next_url = view_data
 
     # Handle formats from plugins
     if format_ == "csv":
@@ -1786,8 +1788,8 @@ async def table_view_traced(datasette, request):
                 rows,
                 columns,
                 expanded_columns,
-                _sql,
+                sql,
-                _next_url,
+                next_url,
             ) = await table_view_data(
                 datasette,
                 request,
@@ -1804,7 +1806,7 @@ async def table_view_traced(datasette, request):
             return data, None, None
 
         return await stream_csv(datasette, fetch_data, request, resolved.db.name)
-    elif format_ in datasette.renderers:
+    elif format_ in datasette.renderers.keys():
         # Dispatch request to the correct output format renderer
         # (CSV is not handled here due to streaming)
         result = call_with_supported_arguments(
@@ -1862,7 +1864,9 @@ async def table_view_traced(datasette, request):
         )
         headers.update(
             {
-                "Link": f'<{alternate_url_json}>; rel="alternate"; type="application/json+datasette"'
+                "Link": '<{}>; rel="alternate"; type="application/json+datasette"'.format(
+                    alternate_url_json
+                )
             }
         )
         table_context = TableContext(
@@ -1947,7 +1951,7 @@ async def table_view_traced(datasette, request):
             headers=headers,
         )
     else:
-        assert False, f"Invalid format: {format_}"
+        assert False, "Invalid format: {}".format(format_)
     if next_url:
         r.headers["link"] = f'<{next_url}>; rel="next"'
     return r
@@ -1977,10 +1981,6 @@ async def table_view_data(
     )
     if not visible:
         raise Forbidden("You do not have permission to view this table")
-    # Record whether this response is private (visible to this actor only)
-    # so the outer table_view() can set appropriate Cache-Control headers,
-    # regardless of which output format ends up being rendered.
-    request._datasette_private_response = private
 
     # Redirect based on request.args, if necessary
     redirect_response = await _redirect_if_needed(datasette, request, resolved)
@@ -2142,7 +2142,9 @@ async def table_view_data(
                             extra_desc_only=(
                                 ""
                                 if sort
-                                else f" or {escape_sqlite(sort or sort_desc)} is null"
+                                else " or {column2} is null".format(
+                                    column2=escape_sqlite(sort or sort_desc)
+                                )
                             ),
                             next_clauses=" and ".join(next_by_pk_clauses),
                         )
@@ -2184,11 +2186,22 @@ async def table_view_data(
 
     # Facets are calculated against SQL without order by or limit
     sql_no_order_no_limit = (
-        f"select {select_all_columns} from {escape_sqlite(table_name)} {where_clause}"
+        "select {select_all_columns} from {table_name} {where}".format(
+            select_all_columns=select_all_columns,
+            table_name=escape_sqlite(table_name),
+            where=where_clause,
+        )
     )
 
     # This is the SQL that populates the main table on the page
-    sql = f"select {select_specified_columns} from {escape_sqlite(table_name)} {where_clause}{order_by} limit {page_size + 1}{offset}"
+    sql = "select {select_specified_columns} from {table_name} {where}{order_by} limit {page_size}{offset}".format(
+        select_specified_columns=select_specified_columns,
+        table_name=escape_sqlite(table_name),
+        where=where_clause,
+        order_by=order_by,
+        page_size=page_size + 1,
+        offset=offset,
+    )
 
     if request.args.get("_timelimit"):
         extra_args["custom_time_limit"] = int(request.args.get("_timelimit"))
@@ -2199,6 +2212,9 @@ async def table_view_data(
     except (sqlite3.OperationalError, InvalidSql) as e:
         raise DatasetteError(str(e), title="Invalid SQL", status=400)
 
+    except sqlite3.OperationalError as e:
+        raise DatasetteError(str(e))
+
     columns = [r[0] for r in results.description]
     rows = list(results.rows)
 
@@ -2245,8 +2261,7 @@ async def table_view_data(
             new_rows = []
             for row in rows:
                 new_row = CustomRow(columns)
-                # CustomRow/sqlite3.Row iterate over values, so .keys() is required
+                for column in row.keys():
-                for column in row.keys():  # noqa: SIM118
                     value = row[column]
                     if (column, value) in expanded_labels and value is not None:
                         new_row[column] = {
@@ -2283,7 +2298,7 @@ async def table_view_data(
         # Data formats reject unknown extras; the HTML path (which passes
         # extra_extras={"_html"}) resolves internal extras of its own
         table_extra_registry.validate_requested(extras, ExtraScope.TABLE)
-    if any(k for k in request.args if k == "_facet" or k.startswith("_facet_")):
+    if any(k for k in request.args.keys() if k == "_facet" or k.startswith("_facet_")):
         extras.add("facet_results")
     if request.args.get("_shape") == "object":
         extras.add("primary_keys")
@@ -2464,16 +2479,20 @@ async def _next_value_and_url(
             except IndexError:
                 # sort/sort_desc column missing from SELECT - look up value by PK instead
                 prefix_where_clause = " and ".join(
-                    f"{escape_sqlite(pk)} = :pk{i}" for i, pk in enumerate(pks)
+                    "[{}] = :pk{}".format(pk, i) for i, pk in enumerate(pks)
                 )
-                prefix_lookup_sql = (
+                prefix_lookup_sql = "select [{}] from [{}] where {}".format(
-                    f"select {escape_sqlite(sort or sort_desc)} "
+                    sort or sort_desc, table_name, prefix_where_clause
-                    f"from {escape_sqlite(table_name)} where {prefix_where_clause}"
                 )
                 prefix = (
                     await db.execute(
                         prefix_lookup_sql,
-                        {**{f"pk{i}": rows[-2][pk] for i, pk in enumerate(pks)}},
+                        {
+                            **{
+                                "pk{}".format(i): rows[-2][pk]
+                                for i, pk in enumerate(pks)
+                            }
+                        },
                     )
                 ).single_value()
             if isinstance(prefix, dict) and "value" in prefix:

datasette/views/table_create_alter.py

@@ -1,9 +1,9 @@
 import json
 import re
 import time
-from typing import Annotated, Any, Literal
+from typing import Annotated, Any, Literal, Union
 
-import sqlite_utils
+from datasette.database import QueryInterrupted
 from pydantic import (
     BaseModel,
     ConfigDict,
@@ -13,29 +13,21 @@ from pydantic import (
     model_validator,
 )
 from pydantic_core import PydanticCustomError
+import sqlite_utils
 from sqlite_utils.db import DEFAULT as SQLITE_UTILS_DEFAULT
 
 from datasette.column_types import SQLiteType
-from datasette.database import QueryInterrupted
 from datasette.events import AlterTableEvent, CreateTableEvent, InsertRowsEvent
 from datasette.resources import DatabaseResource, TableResource
 from datasette.utils import (
-    WriteJsonValueError,
     decode_write_json_rows,
     escape_sqlite,
     get_outbound_foreign_keys,
     table_column_details,
+    WriteJsonValueError,
 )
 from datasette.utils.asgi import NotFound, PayloadTooLarge, Response
-from datasette.utils.permissions import (
+from datasette.utils.sqlite import sqlite_hidden_table_names
-    SKIP_PERMISSION_CHECKS,
-    gather_permission_sql_from_hooks,
-    resolve_permissions_with_candidates,
-)
-from datasette.utils.sqlite import (
-    check_structured_write_table,
-    sqlite_hidden_table_names,
-)
 
 from .base import BaseView
 
@@ -130,30 +122,6 @@ def _public_foreign_key_target(target):
     }
 
 
-async def _filter_visible_foreign_key_targets(datasette, actor, database_name, targets):
-    if not targets:
-        return []
-
-    permission_sqls = await gather_permission_sql_from_hooks(
-        datasette=datasette,
-        actor=actor,
-        action="view-table",
-    )
-    if permission_sqls is SKIP_PERMISSION_CHECKS:
-        return targets
-
-    candidate_tables = list(dict.fromkeys(target["fk_table"] for target in targets))
-    permission_rows = await resolve_permissions_with_candidates(
-        datasette.get_internal_database(),
-        actor,
-        permission_sqls,
-        [(database_name, table_name) for table_name in candidate_tables],
-        "view-table",
-    )
-    visible_tables = {row["child"] for row in permission_rows if bool(row["allow"])}
-    return [target for target in targets if target["fk_table"] in visible_tables]
-
-
 def _singular(name):
     if name.endswith("ies") and len(name) > 3:
         return name[:-3] + "y"
@@ -168,14 +136,14 @@ def _foreign_key_name_reasons(source_column, target):
     singular_table = _singular(table)
     column = target["fk_column"].lower()
     possible_names = {
-        f"{table}_{column}",
+        "{}_{}".format(table, column),
-        f"{singular_table}_{column}",
+        "{}_{}".format(singular_table, column),
     }
     if column == "id":
         possible_names.update(
             {
-                f"{table}_id",
+                "{}_id".format(table),
-                f"{singular_table}_id",
+                "{}_id".format(singular_table),
             }
         )
     return ["name_match"] if source in possible_names else []
@@ -294,8 +262,10 @@ async def _create_table_ui_context(
     if not database_action_permissions.get("create-table"):
         return None
     data = {
-        "path": f"{datasette.urls.database(database_name)}/-/create",
+        "path": "{}/-/create".format(datasette.urls.database(database_name)),
-        "foreignKeyTargetsPath": f"{datasette.urls.database(database_name)}/-/foreign-key-targets",
+        "foreignKeyTargetsPath": "{}/-/foreign-key-targets".format(
+            datasette.urls.database(database_name)
+        ),
         "databaseName": database_name,
         "columnTypes": CREATE_TABLE_COLUMN_TYPES,
         "defaultExpressions": default_expression_options(),
@@ -428,15 +398,15 @@ def default_expr_for_sql(expression):
 
 def _quoted_options(options):
     if len(options) == 1:
-        return f"'{options[0]}'"
+        return "'{}'".format(options[0])
     return "{} or '{}'".format(
-        ", ".join(f"'{option}'" for option in options[:-1]),
+        ", ".join("'{}'".format(option) for option in options[:-1]),
         options[-1],
     )
 
 
 def _default_expr_error_message():
-    return f"Input should be {_quoted_options(list(DEFAULT_EXPRESSIONS))}"
+    return "Input should be {}".format(_quoted_options(list(DEFAULT_EXPRESSIONS)))
 
 
 def default_expression_options():
@@ -745,16 +715,18 @@ class SetForeignKeysOperation(_StrictPydanticModel):
 
 
 AlterTableOperation = Annotated[
-    AddColumnOperation
+    Union[
-    | RenameColumnOperation
+        AddColumnOperation,
-    | RenameTableOperation
+        RenameColumnOperation,
-    | AlterColumnOperation
+        RenameTableOperation,
-    | DropColumnOperation
+        AlterColumnOperation,
-    | SetPrimaryKeyOperation
+        DropColumnOperation,
-    | ReorderColumnsOperation
+        SetPrimaryKeyOperation,
-    | AddForeignKeyOperation
+        ReorderColumnsOperation,
-    | DropForeignKeyOperation
+        AddForeignKeyOperation,
-    | SetForeignKeysOperation,
+        DropForeignKeyOperation,
+        SetForeignKeysOperation,
+    ],
     Field(discriminator="op"),
 ]
 
@@ -768,7 +740,7 @@ def _pydantic_errors(validation_error):
     for error in validation_error.errors():
         location = ".".join(str(item) for item in error["loc"])
         message = error["msg"]
-        errors.append(f"{location}: {message}" if location else message)
+        errors.append("{}: {}".format(location, message) if location else message)
     return errors
 
 
@@ -789,7 +761,7 @@ def _create_table_pydantic_errors(validation_error):
             output.append(message)
             continue
         location = ".".join(str(item) for item in error["loc"])
-        output.append(f"{location}: {message}" if location else message)
+        output.append("{}: {}".format(location, message) if location else message)
     return output
 
 
@@ -838,7 +810,7 @@ class TableCreateView(BaseView):
         try:
             data = await request.json()
         except json.JSONDecodeError as e:
-            return Response.error([f"Invalid JSON: {e}"])
+            return Response.error(["Invalid JSON: {}".format(e)])
         except PayloadTooLarge as e:
             return Response.error([str(e)], 413)
 
@@ -853,18 +825,17 @@ class TableCreateView(BaseView):
         ignore = create_request.ignore
         replace = create_request.replace
 
+        if replace:
+            # Must have update-row permission
+            if not await self.ds.allowed(
+                action="update-row",
+                resource=DatabaseResource(database=database_name),
+                actor=request.actor,
+            ):
+                return Response.error(["Permission denied: need update-row"], 403)
+
         table_name = create_request.table
         table_exists = await db.table_exists(table_name)
-        table_resource = TableResource(database=database_name, table=table_name)
-
-        # Replacing rows requires update-row permission
-        if replace and not await self.ds.allowed(
-            action="update-row",
-            resource=table_resource,
-            actor=request.actor,
-        ):
-            return Response.error(["Permission denied: need update-row"], 403)
-
         columns = create_request.columns
         rows = create_request.rows_list
 
@@ -872,7 +843,7 @@ class TableCreateView(BaseView):
             # Must have insert-row permission
             if not await self.ds.allowed(
                 action="insert-row",
-                resource=table_resource,
+                resource=DatabaseResource(database=database_name),
                 actor=request.actor,
             ):
                 return Response.error(["Permission denied: need insert-row"], 403)
@@ -891,7 +862,7 @@ class TableCreateView(BaseView):
                 if create_request.alter:
                     if not await self.ds.allowed(
                         action="alter-table",
-                        resource=table_resource,
+                        resource=DatabaseResource(database=database_name),
                         actor=request.actor,
                     ):
                         return Response.error(
@@ -907,14 +878,9 @@ class TableCreateView(BaseView):
             actual_pks = await db.primary_keys(table_name)
             # if pk passed and table already exists check it does not change
             bad_pks = False
-            if (
+            if len(actual_pks) == 1 and pk and pk != actual_pks[0]:
-                len(actual_pks) == 1
+                bad_pks = True
-                and pk
+            elif len(actual_pks) > 1 and pks and set(pks) != set(actual_pks):
-                and pk != actual_pks[0]
-                or len(actual_pks) > 1
-                and pks
-                and set(pks) != set(actual_pks)
-            ):
                 bad_pks = True
             if bad_pks:
                 return Response.error(["pk cannot be changed for existing table"])
@@ -927,7 +893,6 @@ class TableCreateView(BaseView):
             )
 
         def create_table(conn):
-            check_structured_write_table(conn, table_name, allow_missing=True)
             db_for_write = sqlite_utils.Database(conn)
             table = db_for_write[table_name]
             if rows:
@@ -960,8 +925,7 @@ class TableCreateView(BaseView):
 
         try:
             schema = await db.execute_write_fn(create_table, request=request)
-        except Exception as e:  # noqa: BLE001
+        except Exception as e:
-            # TODO: narrow to expected write errors so Datasette bugs surface as 500s
             return Response.error([str(e)])
 
         if initial_schema is not None and initial_schema != schema:
@@ -1047,9 +1011,6 @@ class DatabaseForeignKeyTargetsView(BaseView):
             for target in (await db.execute(FOREIGN_KEY_TARGETS_SQL)).dicts()
             if target["fk_table"] not in hidden_tables
         ]
-        targets = await _filter_visible_foreign_key_targets(
-            self.ds, request.actor, database_name, targets
-        )
         return Response.json(
             {
                 "ok": True,
@@ -1088,15 +1049,6 @@ class TableForeignKeySuggestionsView(BaseView):
         source_columns, targets, current_by_column = await db.execute_fn(
             lambda conn: _foreign_key_suggestion_metadata(conn, table_name)
         )
-        targets = await _filter_visible_foreign_key_targets(
-            self.ds, request.actor, database_name, targets
-        )
-        visible_target_tables = {target["fk_table"] for target in targets}
-        current_by_column = {
-            column: current
-            for column, current in current_by_column.items()
-            if current["fk_table"] in visible_target_tables
-        }
 
         columns = []
         options_by_column = {}
@@ -1219,7 +1171,7 @@ class TableAlterView(BaseView):
         try:
             data = await request.json()
         except json.JSONDecodeError as e:
-            return Response.error([f"Invalid JSON: {e}"], 400)
+            return Response.error(["Invalid JSON: {}".format(e)], 400)
         except PayloadTooLarge as e:
             return Response.error([str(e)], 413)
 
@@ -1359,7 +1311,10 @@ class TableAlterView(BaseView):
                         and rename_table_to != current_table_name
                     ):
                         operation_conn.execute(
-                            f"alter table {escape_sqlite(current_table_name)} rename to {escape_sqlite(rename_table_to)}"
+                            "alter table {} rename to {}".format(
+                                escape_sqlite(current_table_name),
+                                escape_sqlite(rename_table_to),
+                            )
                         )
                         current_table_name = rename_table_to
 
@@ -1374,8 +1329,7 @@ class TableAlterView(BaseView):
             before_schema, after_schema, after_table_name = await db.execute_write_fn(
                 alter_table, request=request
             )
-        except Exception as e:  # noqa: BLE001
+        except Exception as e:
-            # TODO: narrow to expected write errors so Datasette bugs surface as 500s
             return Response.error([str(e)], 400)
 
         altered = before_schema != after_schema

datasette/views/table_extras.py

@@ -1,6 +1,5 @@
 import itertools
 from dataclasses import dataclass
-from typing import ClassVar
 
 from datasette.column_types import SQLiteType
 from datasette.database import QueryInterrupted
@@ -102,7 +101,7 @@ class QueryExtraContext:
 class CountSqlExtra(Extra):
     description = "SQL query string used to calculate the total count for the current table view, including active filters."
     example = ExtraExample("/fixtures/facetable.json?_size=0&_extra=count_sql")
-    scopes: ClassVar[set[ExtraScope]] = {ExtraScope.TABLE}
+    scopes = {ExtraScope.TABLE}
 
     async def resolve(self, context):
         return context.count_sql
@@ -111,7 +110,7 @@ class CountSqlExtra(Extra):
 class CountExtra(Extra):
     description = "Total count of rows matching these filters"
     example = ExtraExample("/fixtures/facetable.json?_extra=count")
-    scopes: ClassVar[set[ExtraScope]] = {ExtraScope.TABLE}
+    scopes = {ExtraScope.TABLE}
     expensive = True
 
     async def resolve(self, context):
@@ -129,7 +128,9 @@ class CountExtra(Extra):
                 pass
 
         if context.count_sql and count is None and not context.nocount:
-            count_sql_limited = f"select count(*) from (select * {context.from_sql} limit {context.db.count_limit + 1})"
+            count_sql_limited = "select count(*) from (select * {} limit {})".format(
+                context.from_sql, context.db.count_limit + 1
+            )
             try:
                 count_rows = list(
                     await context.db.execute(count_sql_limited, context.from_sql_params)
@@ -159,7 +160,7 @@ def count_is_truncated(datasette, db, database_name, table_name, count_sql, coun
 class CountTruncatedExtra(Extra):
     description = "True if the count hit Datasette's counting limit, meaning the real number of matching rows is at least the reported count."
     example = ExtraExample("/fixtures/facetable.json?_extra=count,count_truncated")
-    scopes: ClassVar[set[ExtraScope]] = {ExtraScope.TABLE}
+    scopes = {ExtraScope.TABLE}
     expensive = True
 
     async def resolve(self, context, count):
@@ -174,7 +175,7 @@ class CountTruncatedExtra(Extra):
 
 
 class FacetInstancesProvider(Provider):
-    scopes: ClassVar[set[ExtraScope]] = {ExtraScope.TABLE}
+    scopes = {ExtraScope.TABLE}
 
     async def resolve(self, context, count):
         facet_instances = []
@@ -215,7 +216,7 @@ class FacetResultsExtra(Extra):
         },
         note="Shape abbreviated from /fixtures/facetable.json?_facet=state&_extra=facet_results.",
     )
-    scopes: ClassVar[set[ExtraScope]] = {ExtraScope.TABLE}
+    scopes = {ExtraScope.TABLE}
     expensive = True
     docs_note = "See :ref:`facets` for details of how facets work."
 
@@ -258,7 +259,7 @@ class FacetsTimedOutExtra(Extra):
             "if every facet calculation completed."
         ),
     )
-    scopes: ClassVar[set[ExtraScope]] = {ExtraScope.TABLE}
+    scopes = {ExtraScope.TABLE}
 
     async def resolve(self, context, facet_results):
         return facet_results["timed_out"]
@@ -275,7 +276,7 @@ class SuggestedFacetsExtra(Extra):
         ],
         note="Shape abbreviated from /fixtures/facetable.json?_extra=suggested_facets.",
     )
-    scopes: ClassVar[set[ExtraScope]] = {ExtraScope.TABLE}
+    scopes = {ExtraScope.TABLE}
     expensive = True
     docs_note = (
         "Suggestions are controlled by the :ref:`setting_suggest_facets` setting."
@@ -303,7 +304,7 @@ class HumanDescriptionEnExtra(Extra):
     example = ExtraExample(
         "/fixtures/facetable.json?state=CA&_sort=pk&_extra=human_description_en"
     )
-    scopes: ClassVar[set[ExtraScope]] = {ExtraScope.TABLE}
+    scopes = {ExtraScope.TABLE}
 
     async def resolve(self, context):
         human_description_en = context.filters.human_description_en(
@@ -323,7 +324,7 @@ class HumanDescriptionEnExtra(Extra):
 class ColumnsExtra(Extra):
     description = "List of column names returned by this table, row or query."
     example = ExtraExample("/fixtures/facetable.json?_extra=columns")
-    examples: ClassVar[dict[ExtraScope, ExtraExample | list[ExtraExample]]] = {
+    examples = {
         ExtraScope.ROW: ExtraExample(
             "/fixtures/simple_primary_key/1.json?_extra=columns"
         ),
@@ -331,11 +332,7 @@ class ColumnsExtra(Extra):
             "/fixtures/-/query.json?sql=select+1+as+one&_extra=columns"
         ),
     }
-    scopes: ClassVar[set[ExtraScope]] = {
+    scopes = {ExtraScope.TABLE, ExtraScope.ROW, ExtraScope.QUERY}
-        ExtraScope.TABLE,
-        ExtraScope.ROW,
-        ExtraScope.QUERY,
-    }
 
     async def resolve(self, context):
         return context.columns
@@ -344,7 +341,7 @@ class ColumnsExtra(Extra):
 class AllColumnsExtra(Extra):
     description = "List of all column names in the table, regardless of ``_col=`` or ``_nocol=`` filtering."
     example = ExtraExample("/fixtures/facetable.json?_col=pk&_extra=all_columns")
-    scopes: ClassVar[set[ExtraScope]] = {ExtraScope.TABLE}
+    scopes = {ExtraScope.TABLE}
 
     async def resolve(self, context):
         return list(context.table_columns)
@@ -353,12 +350,12 @@ class AllColumnsExtra(Extra):
 class PrimaryKeysExtra(Extra):
     description = "List of primary key column names for this table, or an empty list if the table has no explicit primary key."
     example = ExtraExample("/fixtures/facetable.json?_extra=primary_keys")
-    examples: ClassVar[dict[ExtraScope, ExtraExample | list[ExtraExample]]] = {
+    examples = {
         ExtraScope.ROW: ExtraExample(
             "/fixtures/simple_primary_key/1.json?_extra=primary_keys"
         )
     }
-    scopes: ClassVar[set[ExtraScope]] = {ExtraScope.TABLE, ExtraScope.ROW}
+    scopes = {ExtraScope.TABLE, ExtraScope.ROW}
 
     async def resolve(self, context):
         return context.pks
@@ -396,12 +393,12 @@ class ColumnDetailsExtra(Extra):
         "virtual generated columns and ``3`` for stored generated columns."
     )
     example = ExtraExample("/fixtures/binary_data.json?_size=0&_extra=column_details")
-    examples: ClassVar[dict[ExtraScope, ExtraExample | list[ExtraExample]]] = {
+    examples = {
         ExtraScope.ROW: ExtraExample(
             "/fixtures/binary_data/1.json?_extra=column_details"
         )
     }
-    scopes: ClassVar[set[ExtraScope]] = {ExtraScope.TABLE, ExtraScope.ROW}
+    scopes = {ExtraScope.TABLE, ExtraScope.ROW}
 
     async def resolve(self, context):
         column_details = await context.datasette._get_resource_column_details(
@@ -415,7 +412,7 @@ class ColumnDetailsExtra(Extra):
 
 class ActionsExtra(Extra):
     description = 'Async callable returning table or view actions made available by core and plugin hooks. Each item is either a link with ``href``, ``label`` and optional ``description`` keys, or a button with ``type: "button"``, ``label``, optional ``description`` and optional ``attrs``. See :ref:`plugin_actions`, :ref:`plugin_hook_table_actions` and :ref:`plugin_hook_view_actions`.'
-    scopes: ClassVar[set[ExtraScope]] = {ExtraScope.TABLE}
+    scopes = {ExtraScope.TABLE}
     # Returns an async function for the HTML templates - not JSON serializable
     public = False
 
@@ -487,7 +484,7 @@ async def precompute_database_action_permissions(datasette, actor, database_name
 class IsViewExtra(Extra):
     description = "Whether this resource is a view instead of a table"
     example = ExtraExample("/fixtures/simple_view.json?_extra=is_view")
-    scopes: ClassVar[set[ExtraScope]] = {ExtraScope.TABLE}
+    scopes = {ExtraScope.TABLE}
 
     async def resolve(self, context):
         return context.is_view
@@ -500,7 +497,7 @@ class DebugExtra(Extra):
         "API and may change without warning."
     )
     example = ExtraExample("/fixtures/facetable.json?_extra=debug")
-    examples: ClassVar[dict[ExtraScope, ExtraExample | list[ExtraExample]]] = {
+    examples = {
         ExtraScope.ROW: ExtraExample(
             "/fixtures/simple_primary_key/1.json?_extra=debug"
         ),
@@ -508,11 +505,7 @@ class DebugExtra(Extra):
             "/fixtures/-/query.json?sql=select+1+as+one&_extra=debug"
         ),
     }
-    scopes: ClassVar[set[ExtraScope]] = {
+    scopes = {ExtraScope.TABLE, ExtraScope.ROW, ExtraScope.QUERY}
-        ExtraScope.TABLE,
-        ExtraScope.ROW,
-        ExtraScope.QUERY,
-    }
 
     async def resolve(self, context):
         debug = {
@@ -536,7 +529,7 @@ class DebugExtra(Extra):
 class RequestExtra(Extra):
     description = "Dictionary with request details: ``url``, ``path``, ``full_path``, ``host`` and ``args`` where ``args`` maps query string parameter names to their values."
     example = ExtraExample("/fixtures/facetable.json?_extra=request")
-    examples: ClassVar[dict[ExtraScope, ExtraExample | list[ExtraExample]]] = {
+    examples = {
         ExtraScope.ROW: ExtraExample(
             "/fixtures/simple_primary_key/1.json?_extra=request"
         ),
@@ -544,11 +537,7 @@ class RequestExtra(Extra):
             "/fixtures/-/query.json?sql=select+1+as+one&_extra=request"
         ),
     }
-    scopes: ClassVar[set[ExtraScope]] = {
+    scopes = {ExtraScope.TABLE, ExtraScope.ROW, ExtraScope.QUERY}
-        ExtraScope.TABLE,
-        ExtraScope.ROW,
-        ExtraScope.QUERY,
-    }
 
     async def resolve(self, context):
         return {
@@ -561,7 +550,7 @@ class RequestExtra(Extra):
 
 
 class DisplayColumnsAndRowsProvider(Provider):
-    scopes: ClassVar[set[ExtraScope]] = {ExtraScope.TABLE}
+    scopes = {ExtraScope.TABLE}
 
     async def resolve(self, context):
         display_columns, display_rows = await context.display_columns_and_rows(
@@ -605,7 +594,7 @@ class DisplayColumnsExtra(Extra):
         ],
         note="Shape abbreviated from /fixtures/facetable.json?_size=1&_extra=display_columns.",
     )
-    scopes: ClassVar[set[ExtraScope]] = {ExtraScope.TABLE}
+    scopes = {ExtraScope.TABLE}
 
     async def resolve(self, context, display_columns_and_rows):
         return display_columns_and_rows["columns"]
@@ -613,7 +602,7 @@ class DisplayColumnsExtra(Extra):
 
 class DisplayRowsExtra(Extra):
     description = "Rows formatted for the HTML table display. Each row is iterable and contains cell dictionaries with ``column``, ``value``, ``raw`` and ``value_type`` keys; table pages may also provide ``pk_path``, ``row_path`` and ``row_label`` attributes on each row object."
-    scopes: ClassVar[set[ExtraScope]] = {ExtraScope.TABLE}
+    scopes = {ExtraScope.TABLE}
     # Contains markupsafe/sqlite3.Row values - not JSON serializable
     public = False
 
@@ -644,7 +633,7 @@ class RenderCellExtra(Extra):
             "whose rendered value differs from the default are included."
         ),
     )
-    examples: ClassVar[dict[ExtraScope, ExtraExample | list[ExtraExample]]] = {
+    examples = {
         ExtraScope.ROW: ExtraExample(
             value={
                 "rows": [{"id": 4, "content": "RENDER_CELL_DEMO"}],
@@ -669,11 +658,7 @@ class RenderCellExtra(Extra):
             ),
         ),
     }
-    scopes: ClassVar[set[ExtraScope]] = {
+    scopes = {ExtraScope.TABLE, ExtraScope.ROW, ExtraScope.QUERY}
-        ExtraScope.TABLE,
-        ExtraScope.ROW,
-        ExtraScope.QUERY,
-    }
 
     async def resolve(self, context):
         table_name = context.table_name
@@ -727,7 +712,7 @@ class RenderCellExtra(Extra):
 class QueryExtra(Extra):
     description = "Details of the underlying SQL query as a dictionary with ``sql`` and ``params`` keys."
     example = ExtraExample("/fixtures/facetable.json?_size=1&_extra=query")
-    examples: ClassVar[dict[ExtraScope, ExtraExample | list[ExtraExample]]] = {
+    examples = {
         ExtraScope.ROW: ExtraExample(
             "/fixtures/simple_primary_key/1.json?_extra=query"
         ),
@@ -736,11 +721,7 @@ class QueryExtra(Extra):
             ExtraExample("/fixtures/neighborhood_search.json?text=town&_extra=query"),
         ],
     }
-    scopes: ClassVar[set[ExtraScope]] = {
+    scopes = {ExtraScope.TABLE, ExtraScope.ROW, ExtraScope.QUERY}
-        ExtraScope.TABLE,
-        ExtraScope.ROW,
-        ExtraScope.QUERY,
-    }
 
     async def resolve(self, context):
         return {
@@ -764,7 +745,7 @@ class ColumnTypesExtra(Extra):
             "been assigned the ``json`` column type."
         ),
     )
-    examples: ClassVar[dict[ExtraScope, ExtraExample | list[ExtraExample]]] = {
+    examples = {
         ExtraScope.ROW: ExtraExample(
             "/fixtures/facetable/1.json?_extra=column_types",
             note=(
@@ -773,7 +754,7 @@ class ColumnTypesExtra(Extra):
             ),
         )
     }
-    scopes: ClassVar[set[ExtraScope]] = {ExtraScope.TABLE, ExtraScope.ROW}
+    scopes = {ExtraScope.TABLE, ExtraScope.ROW}
 
     async def resolve(self, context):
         ct_map = await context.datasette.get_column_types(
@@ -823,7 +804,7 @@ class SetColumnTypeUiExtra(Extra):
             "types that could be assigned to it."
         ),
     )
-    scopes: ClassVar[set[ExtraScope]] = {ExtraScope.TABLE}
+    scopes = {ExtraScope.TABLE}
 
     async def resolve(self, context):
         if context.is_view:
@@ -865,7 +846,9 @@ class SetColumnTypeUiExtra(Extra):
                 ],
             }
         return {
-            "path": f"{context.datasette.urls.table(context.database_name, context.table_name)}/-/set-column-type",
+            "path": "{}/-/set-column-type".format(
+                context.datasette.urls.table(context.database_name, context.table_name)
+            ),
             "columns": columns,
         }
 
@@ -883,7 +866,7 @@ class MetadataExtra(Extra):
             "descriptions."
         ),
     )
-    examples: ClassVar[dict[ExtraScope, ExtraExample | list[ExtraExample]]] = {
+    examples = {
         ExtraScope.ROW: ExtraExample(
             "/fixtures/simple_primary_key/1.json?_extra=metadata",
             note=(
@@ -901,11 +884,7 @@ class MetadataExtra(Extra):
             ),
         ),
     }
-    scopes: ClassVar[set[ExtraScope]] = {
+    scopes = {ExtraScope.TABLE, ExtraScope.ROW, ExtraScope.QUERY}
-        ExtraScope.TABLE,
-        ExtraScope.ROW,
-        ExtraScope.QUERY,
-    }
 
     async def resolve(self, context):
         if context.scope == ExtraScope.QUERY:
@@ -934,7 +913,7 @@ class MetadataExtra(Extra):
 class DatabaseExtra(Extra):
     description = "Database name"
     example = ExtraExample("/fixtures/facetable.json?_extra=database")
-    examples: ClassVar[dict[ExtraScope, ExtraExample | list[ExtraExample]]] = {
+    examples = {
         ExtraScope.ROW: ExtraExample(
             "/fixtures/simple_primary_key/1.json?_extra=database"
         ),
@@ -942,11 +921,7 @@ class DatabaseExtra(Extra):
             "/fixtures/-/query.json?sql=select+1+as+one&_extra=database"
         ),
     }
-    scopes: ClassVar[set[ExtraScope]] = {
+    scopes = {ExtraScope.TABLE, ExtraScope.ROW, ExtraScope.QUERY}
-        ExtraScope.TABLE,
-        ExtraScope.ROW,
-        ExtraScope.QUERY,
-    }
 
     async def resolve(self, context):
         return context.database_name
@@ -955,10 +930,10 @@ class DatabaseExtra(Extra):
 class TableExtra(Extra):
     description = "Table name"
     example = ExtraExample("/fixtures/facetable.json?_extra=table")
-    examples: ClassVar[dict[ExtraScope, ExtraExample | list[ExtraExample]]] = {
+    examples = {
         ExtraScope.ROW: ExtraExample("/fixtures/simple_primary_key/1.json?_extra=table")
     }
-    scopes: ClassVar[set[ExtraScope]] = {ExtraScope.TABLE, ExtraScope.ROW}
+    scopes = {ExtraScope.TABLE, ExtraScope.ROW}
 
     async def resolve(self, context):
         return context.table_name
@@ -971,7 +946,7 @@ class DatabaseColorExtra(Extra):
         "a hash of the database name and used in the Datasette interface."
     )
     example = ExtraExample("/fixtures/facetable.json?_extra=database_color")
-    examples: ClassVar[dict[ExtraScope, ExtraExample | list[ExtraExample]]] = {
+    examples = {
         ExtraScope.ROW: ExtraExample(
             "/fixtures/simple_primary_key/1.json?_extra=database_color"
         ),
@@ -979,11 +954,7 @@ class DatabaseColorExtra(Extra):
             "/fixtures/-/query.json?sql=select+1+as+one&_extra=database_color"
         ),
     }
-    scopes: ClassVar[set[ExtraScope]] = {
+    scopes = {ExtraScope.TABLE, ExtraScope.ROW, ExtraScope.QUERY}
-        ExtraScope.TABLE,
-        ExtraScope.ROW,
-        ExtraScope.QUERY,
-    }
 
     async def resolve(self, context):
         return context.db.color
@@ -994,7 +965,7 @@ class FormHiddenArgsExtra(Extra):
     example = ExtraExample(
         "/fixtures/facetable.json?_facet=state&_size=1&_extra=form_hidden_args"
     )
-    scopes: ClassVar[set[ExtraScope]] = {ExtraScope.TABLE}
+    scopes = {ExtraScope.TABLE}
 
     async def resolve(self, context):
         form_hidden_args = []
@@ -1011,7 +982,7 @@ class FormHiddenArgsExtra(Extra):
 
 class FiltersExtra(Extra):
     description = "``Filters`` object used by the HTML table interface. Useful methods include ``filters.human_description_en()``; this is not JSON serializable."
-    scopes: ClassVar[set[ExtraScope]] = {ExtraScope.TABLE}
+    scopes = {ExtraScope.TABLE}
     # Returns a Filters instance for the HTML templates - not JSON serializable
     public = False
 
@@ -1027,7 +998,7 @@ class CustomTableTemplatesExtra(Extra):
         ":ref:`customization_custom_templates`."
     )
     example = ExtraExample("/fixtures/facetable.json?_extra=custom_table_templates")
-    scopes: ClassVar[set[ExtraScope]] = {ExtraScope.TABLE}
+    scopes = {ExtraScope.TABLE}
 
     async def resolve(self, context):
         return [
@@ -1048,7 +1019,7 @@ class SortedFacetResultsExtra(Extra):
     example = ExtraExample(
         "/fixtures/facetable.json?_facet=state&_extra=sorted_facet_results"
     )
-    scopes: ClassVar[set[ExtraScope]] = {ExtraScope.TABLE}
+    scopes = {ExtraScope.TABLE}
 
     async def resolve(self, context, facet_results):
         facet_configs = context.table_metadata.get("facets", [])
@@ -1058,7 +1029,7 @@ class SortedFacetResultsExtra(Extra):
                 if isinstance(fc, str):
                     metadata_facet_names.append(fc)
                 elif isinstance(fc, dict):
-                    metadata_facet_names.append(next(iter(fc.values())))
+                    metadata_facet_names.append(list(fc.values())[0])
             metadata_order = {name: i for i, name in enumerate(metadata_facet_names)}
             metadata_facets = []
             request_facets = []
@@ -1084,7 +1055,7 @@ class SortedFacetResultsExtra(Extra):
 class TableDefinitionExtra(Extra):
     description = "SQL definition for this table"
     example = ExtraExample("/fixtures/facetable.json?_extra=table_definition")
-    scopes: ClassVar[set[ExtraScope]] = {ExtraScope.TABLE}
+    scopes = {ExtraScope.TABLE}
 
     async def resolve(self, context):
         return await context.db.get_table_definition(context.table_name)
@@ -1093,7 +1064,7 @@ class TableDefinitionExtra(Extra):
 class ViewDefinitionExtra(Extra):
     description = "SQL definition for this view"
     example = ExtraExample("/fixtures/simple_view.json?_extra=view_definition")
-    scopes: ClassVar[set[ExtraScope]] = {ExtraScope.TABLE}
+    scopes = {ExtraScope.TABLE}
 
     async def resolve(self, context):
         return await context.db.get_view_definition(context.table_name)
@@ -1110,7 +1081,7 @@ class RenderersExtra(Extra):
             "<plugin_register_output_renderer>`."
         ),
     )
-    scopes: ClassVar[set[ExtraScope]] = {ExtraScope.TABLE}
+    scopes = {ExtraScope.TABLE}
 
     async def resolve(self, context, expandable_columns, query):
         renderers = {}
@@ -1152,7 +1123,7 @@ class PrivateExtra(Extra):
         "anonymous user could not. See :ref:`authentication_permissions`."
     )
     example = ExtraExample("/fixtures/facetable.json?_extra=private")
-    examples: ClassVar[dict[ExtraScope, ExtraExample | list[ExtraExample]]] = {
+    examples = {
         ExtraScope.ROW: ExtraExample(
             "/fixtures/simple_primary_key/1.json?_extra=private"
         ),
@@ -1160,11 +1131,7 @@ class PrivateExtra(Extra):
             "/fixtures/-/query.json?sql=select+1+as+one&_extra=private"
         ),
     }
-    scopes: ClassVar[set[ExtraScope]] = {
+    scopes = {ExtraScope.TABLE, ExtraScope.ROW, ExtraScope.QUERY}
-        ExtraScope.TABLE,
-        ExtraScope.ROW,
-        ExtraScope.QUERY,
-    }
 
     async def resolve(self, context):
         return context.private
@@ -1181,7 +1148,7 @@ class ExpandableColumnsExtra(Extra):
             "that would be used as the label for each expanded value."
         ),
     )
-    scopes: ClassVar[set[ExtraScope]] = {ExtraScope.TABLE}
+    scopes = {ExtraScope.TABLE}
 
     async def resolve(self, context):
         expandables = []
@@ -1201,15 +1168,12 @@ class ForeignKeyTablesExtra(Extra):
             "reference this row, and ``link`` is a URL to browse those rows."
         ),
     )
-    scopes: ClassVar[set[ExtraScope]] = {ExtraScope.ROW}
+    scopes = {ExtraScope.ROW}
     expensive = True
 
     async def resolve(self, context):
         return await context.foreign_key_tables(
-            context.database_name,
+            context.database_name, context.table_name, context.pk_values
-            context.table_name,
-            context.pk_values,
-            actor=context.request.actor,
         )
 
 
@@ -1238,11 +1202,7 @@ class ExtrasExtra(Extra):
             "the current request."
         ),
     )
-    scopes: ClassVar[set[ExtraScope]] = {
+    scopes = {ExtraScope.TABLE, ExtraScope.ROW, ExtraScope.QUERY}
-        ExtraScope.TABLE,
-        ExtraScope.ROW,
-        ExtraScope.QUERY,
-    }
 
     async def resolve(self, context):
         all_extras = [

datasette/write_sql.py

@@ -83,22 +83,6 @@ def decision_for_write_sql_operation(
             )
     if operation.operation == "function":
         return IgnoreWriteSqlOperation("SQL function")
-    if (
-        operation.operation == "read"
-        and operation.target_type == "table"
-        and operation.table is not None
-        and operation.table_kind is None
-        and operation.table.lower().startswith("pragma_")
-    ):
-        # Eponymous table-valued PRAGMA functions (e.g. pragma_table_info("secret"))
-        # report a read of the synthetic "pragma_table_info" table, not of the
-        # table passed as an argument. That means a view-table denial on the real
-        # table is never consulted, so these could otherwise be used to read
-        # schema metadata (column names, table lists, ...) for tables the actor
-        # is not allowed to view. Reject them outright in untrusted write SQL,
-        # including inside CREATE VIEW bodies (whose reads are discovered here
-        # via the rolled-back dependency-read analysis above).
-        return UnsupportedWriteSqlOperation(unsupported_message)
     if (
         operation.operation == "read"
         and operation.target_type == "table"

docs/authentication.rst

@@ -45,7 +45,7 @@ Using the "root" actor
 
 Datasette currently leaves almost all forms of authentication to plugins - `datasette-auth-github <https://github.com/simonw/datasette-auth-github>`__ for example.
 
-The one exception is the "root" account, which you can sign into while using Datasette on your local machine. The root user starts with **all permissions**: Datasette contributes a global allow rule for every action. More specific deny rules can still override that global rule.
+The one exception is the "root" account, which you can sign into while using Datasette on your local machine. The root user has **all permissions** - they can perform any action regardless of other permission rules.
 
 The ``--root`` flag is designed for local development and testing. When you start Datasette with ``--root``, the root user automatically receives every permission, including:
 
@@ -84,12 +84,12 @@ Click on that link and then visit ``http://127.0.0.1:8001/-/actor`` to confirm t
 Permissions
 ===========
 
+Datasette's permissions system is built around SQL queries. Datasette and its plugins construct SQL queries to resolve the list of resources that an actor cas access.
+
 The key question the permissions system answers is this:
 
     Is this **actor** allowed to perform this **action**, optionally against this particular **resource**?
 
-Every permission decision can be understood in terms of those three values. Datasette implements the decisions using SQL, but you do not need to understand the generated SQL to configure or debug permissions.
-
 **Actors** are :ref:`described above <authentication_actor>`.
 
 An **action** is a string describing the action the actor would like to perform. A full list is :ref:`provided below <actions>` - examples include ``view-table`` and ``execute-sql``.
@@ -138,72 +138,7 @@ This configuration will deny access to everyone except the user with ``id`` of `
 How permissions are resolved
 ----------------------------
 
-Permission rules describe an effect (``allow`` or ``deny``) at one of three levels:
+Datasette performs permission checks using the internal :ref:`datasette_allowed`, method which accepts keyword arguments for ``action``, ``resource`` and an optional ``actor``.
-
-``resource``
-    A specific child resource, such as the ``analytics/sales`` table.
-
-``parent``
-    A parent resource, such as the ``analytics`` database. A parent rule also applies to its child resources.
-
-``global``
-    Every resource for that action.
-
-Datasette resolves matching rules from most specific to least specific:
-
-#. Resource rules take precedence over parent and global rules.
-#. Parent rules take precedence over global rules.
-#. If both allow and deny rules match at the same level, deny takes precedence.
-#. If no rule matches, access is denied.
-
-This means a resource-level allow can provide an exception to a parent-level deny. It also means that two plugins which disagree at the same level resolve to deny.
-
-For table and view permissions, resource names use SQLite's case-insensitive
-identifier matching: ``Secret``, ``secret`` and ``SECRET`` identify the same
-table. This applies to configuration rules, plugin rules and token restrictions.
-Only ASCII letters are case-insensitive; non-ASCII characters remain distinct.
-Conflicting rules for different spellings of the same name follow the usual
-deny-wins rule at the same scope. Names retain their original spelling in
-resource listings and permission explanations. Database names, stored query
-names and other resource types remain case-sensitive.
-
-.. list-table:: Permission rule examples
-   :header-rows: 1
-
-   * - Matching rules
-     - Result
-     - Explanation
-   * - Global allow
-     - Allow
-     - The global rule is the most specific matching rule.
-   * - Global allow, parent deny
-     - Deny
-     - The parent rule is more specific.
-   * - Parent deny, resource allow
-     - Allow
-     - The resource rule is more specific.
-   * - Resource allow and resource deny
-     - Deny
-     - Deny takes precedence at the same level.
-   * - No matching rules
-     - Deny
-     - Permissions default to deny when no rule applies.
-
-The built-in public defaults are global allow rules for actions such as ``view-instance``, ``view-database`` and ``view-table``. They follow the same precedence rules as configuration and plugin rules. The ``--default-deny`` option prevents Datasette from contributing those default allow rules.
-
-The built-in ``datasette.default_permissions.sqlite_statistics`` plugin denies
-``view-table`` for ``sqlite_stat1``, ``sqlite_stat2``, ``sqlite_stat3`` and
-``sqlite_stat4``. These table-level denials also apply to root users and take
-precedence over configuration or plugin allow rules at the same scope.
-This controls table access and listings, without changing ``execute-sql`` or
-SQLite's internal use of statistics.
-
-A plugin can replace this policy by unregistering
-``datasette.default_permissions.sqlite_statistics`` through ``datasette.pm``
-and registering its own permission hook. Plugin registration is process-wide:
-replacing this policy affects every Datasette instance in that process.
-
-Datasette performs checks using :ref:`datasette_allowed`, which accepts keyword arguments for ``action``, ``resource`` and an optional ``actor``.
 
 ``resource`` should be an instance of the appropriate ``Resource`` subclass from :mod:`datasette.resources`—for example ``InstanceResource()``, ``DatabaseResource(database="...``)`` or ``TableResource(database="...", table="...")``. This defaults to ``InstanceResource()`` if not specified.
 
@@ -214,12 +149,12 @@ resources were allowed or denied. The combined sources are:
 
 * ``allow`` blocks configured in :ref:`datasette.yaml <authentication_permissions_config>`.
 * :ref:`Actor restrictions <authentication_cli_create_token_restrict>` encoded into the actor dictionary or API token.
-* The "root" user rule when ``--root`` (or :attr:`Datasette.root_enabled <datasette.app.Datasette.root_enabled>`) is active. This is a global allow rule, so a more specific configuration deny can override it.
+* The "root" user shortcut when ``--root`` (or :attr:`Datasette.root_enabled <datasette.app.Datasette.root_enabled>`) is active, replying ``True`` to all permission chucks unless configuration rules deny them at a more specific level.
 * Any additional SQL provided by plugins implementing :ref:`plugin_hook_permission_resources_sql`.
 
-Actor restrictions are applied after the allow/deny rules. They act as an additional allowlist: a restriction can remove access but cannot grant access that the actor did not already have. See :ref:`authentication_cli_create_token_restrict`.
+Datasette evaluates the SQL to determine if the requested ``resource`` is
-
+included. Explicit deny rules returned by configuration or plugins will block
-Some actions have dependencies on other actions. These are evaluated as an ``AND`` condition. For example, ``execute-sql`` also requires ``view-database``: both decisions must be allowed for the final result to be allowed.
+access even if other rules allowed it.
 
 .. _authentication_permissions_allow:
 
@@ -792,8 +727,6 @@ Datasette defaults to allowing any site visitor to execute their own custom SQL
 
 Access to this ability is controlled by the :ref:`actions_execute_sql` permission.
 
-This permission does not apply to structured table-browsing operations where Datasette constructs the SQL, such as sorting, column filters and :ref:`facets`. Faceting is controlled separately by the :ref:`setting_allow_facet` setting.
-
 The easiest way to disable arbitrary SQL queries is using the :ref:`default_allow_sql setting <setting_default_allow_sql>` when you first start Datasette running.
 
 You can alternatively use an ``"allow_sql"`` block to control who is allowed to execute arbitrary SQL queries.
@@ -1212,21 +1145,11 @@ The debug tool at ``/-/permissions`` is available to any actor with the ``permis
 
     datasette -s permissions.permissions-debug true data.db
 
-The permission debug tools answer four different questions:
+The page shows the permission checks that have been carried out by the Datasette instance.
 
-Why was this decision allowed or denied?
+It also provides an interface for running hypothetical permission checks against a hypothetical actor. This is a useful way of confirming that your configured permissions work in the way you expect.
-    Use :ref:`PermissionCheckView`. It shows every matching rule, identifies the winning specificity level, applies actor restrictions and evaluates any required actions.
 
-Which resources can the current actor access?
+This is designed to help administrators and plugin authors understand exactly how permission checks are being carried out, in order to effectively configure Datasette's permission system.
-    Use :ref:`AllowedResourcesView` to view an access map for a selected action.
-
-Which raw rules did Datasette and its plugins contribute?
-    Use :ref:`PermissionRulesView` to inspect the rules before they are resolved into decisions.
-
-Which checks has this Datasette instance performed recently?
-    Use ``/-/permissions`` to view recent permission activity.
-
-These tools are designed to help administrators and plugin authors understand and confirm the effective permissions configuration.
 
 These debug endpoints are exempt from the :ref:`JSON API stability promise <json_api_stability>` - their JSON shapes may change in future releases.
 
@@ -1261,20 +1184,11 @@ This endpoint requires the ``permissions-debug`` permission.
 Permission check view
 ---------------------
 
-The ``/-/check`` endpoint evaluates and explains a single actor, action and resource decision. The explanation includes:
+The ``/-/check`` endpoint evaluates a single action/resource pair and returns information indicating whether the access was allowed along with diagnostic information.
-
-* Every matching allow and deny rule, with its source and reason.
-* The winning resource, parent or global scope.
-* Rules ignored because a more specific rule matched, or because a deny won at the same scope.
-* Actor restriction allowlists that included or excluded the resource.
-* Additional actions required by the requested action.
-* An explicit default-deny explanation when no rule matched.
 
 This endpoint provides an interactive HTML form interface. Add ``.json`` to the URL path (e.g. ``/-/check.json?action=view-instance``) to get the raw JSON response instead.
 
-Pass ``?action=`` to specify the action to check, and optional ``?parent=`` and ``?child=`` parameters to specify the resource. The interactive form also accepts actor JSON, allowing a hypothetical actor to be tested without signing in as that actor. The JSON endpoint accepts the same value using the ``actor`` query string parameter. Use ``actor=null`` to represent an anonymous actor.
+Pass ``?action=`` to specify the action to check, and optional ``?parent=`` and ``?child=`` parameters to specify the resource.
-
-This endpoint requires the ``permissions-debug`` permission. The hypothetical actor is used only for the decision being explained; access to the debug tool is checked against the actor who is actually signed in.
 
 .. _authentication_ds_actor:
 
@@ -1382,12 +1296,6 @@ view-table
 
 Actor is allowed to view a table (or view) page, e.g. https://latest.datasette.io/fixtures/complex_foreign_keys
 
-Derived implementation tables require access to their immediate source: FTS and RTree shadow tables require access to their virtual table, external-content FTS tables require access to their content table, and FTS vocabulary tables (``fts5vocab`` and ``fts4aux``) require access to their FTS table. The derived table's own permission rules also apply.
-
-Access is always denied if the source table is itself derived, or if a vocabulary table's source cannot be identified.
-
-The same rules apply to individual permission checks and table listings, including whether they are private. If a database error prevents dependency discovery, the check or listing fails with an error instead of ignoring the dependencies. Failed discovery results are not cached, so later checks can retry.
-
 ``resource`` - ``datasette.resources.TableResource(database, table)``
     ``database`` is the name of the database (string)
 
@@ -1550,8 +1458,6 @@ execute-sql
 
 Actor is allowed to run arbitrary read-only SQL queries against a specific database using the :ref:`custom SQL query page <pages_custom_sql_queries>`, e.g. https://latest.datasette.io/fixtures/-/query?sql=select+100
 
-This action also controls raw SQL supplied using ``?_where=``. It does not control structured table-browsing features such as :ref:`facets`, which use SQL generated by Datasette and are controlled by :ref:`setting_allow_facet`.
-
 ``resource`` - ``datasette.resources.DatabaseResource(database)``
     ``database`` is the name of the database (string)
 

docs/changelog.rst

@@ -4,80 +4,6 @@
 Changelog
 =========
 
-.. _unreleased:
-
-Unreleased
-----------
-
-- Datasette now uses `httpx2 <https://httpx2.pydantic.dev/>`__, the Pydantic-maintained continuation of `httpx <https://www.python-httpx.org/>`__, in place of ``httpx``. The public API is the same, but responses returned by :ref:`internals_datasette_client` are now ``httpx2.Response`` objects rather than ``httpx.Response``. Plugins that use ``isinstance()`` checks against ``httpx.Response`` should be updated to use ``httpx2``. **Plugins that use httpx without explicitly depending on it** will need to add an explicit dependency or switch to `httpx2`.
-
-.. _v1_0_a39:
-
-1.0a39 (2026-09-10)
--------------------
-
-This alpha release includes security fixes for permissions, SQL construction, HTML rendering, authentication and caching, plus improvements to application startup and write execution.
-
-See `0.65.4 <https://docs.datasette.io/en/stable/changelog.html#v0-65-4>`__ for fixes that have been backported to the stable 0.65.x branch.
-
-The Datasette blog `has more details on these releases <https://datasette.io/blog/2026/september-security-releases/>`__.
-
-Some of the security fixes include:
-
-- Table and view permission checks now take SQLite's case-insensitive names into account. See :ref:`authentication_permissions_explained`.
-- Viewing a full-text search index table now checks you have permission to view the table from which it draws its content.
-- Viewing SQLite statistics tables (``sqlite_stat1`` through ``sqlite_stat4``) is now denied by a default.
-- Table schema display now obeys the ``view-table`` permission.
-- Table filters using ``?_through=`` require permission to view the intermediate table.
-- Foreign-key target and suggestion APIs, incoming foreign-key relationships and their row counts now respect ``view-table`` permission.
-- Row endpoints check permissions before resolving primary keys, to avoid revealing the existence of an otherwise invisible primary key.
-- Improved permission checks for the create-table API. See :ref:`json_api_write`.
-- The write SQL interface now checks ``view-table`` permission for tables referenced by ``CREATE VIEW`` statements.
-- Fixed SQL identifier escaping for column names from untrusted database schemas.
-- Fixed HTML escaping for column names from untrusted database schemas.
-- URL columns now render links only for validated HTTP or HTTPS URLs.
-- Private and personalized dynamic responses now use ``Cache-Control: private, no-store``. Anonymous dynamic responses vary by ``Cookie`` and ``Authorization``.
-- Actor cookies now respect ``expire_after``.
-- Restricted actors can no longer create API tokens.
-- Stored-query create, edit and delete forms now block framing to prevent clickjacking.
-- Configuration secret redaction now matches key names case-insensitively.
-- SQLite extension loading is disabled after extensions supplied using ``--load-extension`` have been loaded.
-
-Other improvements and fixes
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-- :ref:`db.execute_write() <database_execute_write>` now has a default execution time limit of 2,000ms. Plugins can override this using ``time_limit_ms=`` or disable it using ``time_limit_ms=None``. This limit is independent of the ``sql_time_limit_ms`` setting for read queries.
-- Application startup now runs through ASGI lifespan events before requests are accepted, with a first-request fallback for hosts without lifespan support. Thanks, `Alex Garcia <https://github.com/asg017>`__. (:pr:`2887`)
-- ``datasette serve`` now runs startup hooks and Uvicorn on the same event loop, preserving background tasks started by plugins. The minimum Uvicorn version is now 0.29. Thanks, `Alex Garcia <https://github.com/asg017>`__. (:pr:`2886`)
-- Non-blocking writes using ``execute_write_fn(..., block=False)`` now return a distinct task UUID for every call and work correctly with ``num_sql_threads=0``. Thanks, `Zain Dana Harper <https://github.com/HarperZ9>`__. (:issue:`2860`, :issue:`2859`)
-- Dropping a table now disables its full-text search index first. (:issue:`2874`)
-- Fixed ``CREATE VIEW`` SQL analysis on Python 3.10.
-
-.. _v1_0_a38:
-
-1.0a38 (2026-08-06)
--------------------
-
-This release fixes a **SQL injection** security issue that affects Datasette instances that serve a **mixture of public and private tables** in the same database, with access configured using the :ref:`Datasette permissions system <authentication>`.
-
-Site administrators who serve private tables in this way are advised to disable the :ref:`execute-sql permission <actions_execute_sql>` on that database to prevent users from accessing private tables using raw SQL queries. The bug that has been fixed would have allowed users with access to any public table to execute SQL injection attacks despite that restriction, giving them read-only access to data in private tables in the same database.
-
-This fix is also available in Datasette 0.65.3.
-
-.. _v1_0_a37:
-
-1.0a37 (2026-07-14)
--------------------
-
-Performance improvement for SQL-backed permission checks, plus an improved permission debugging interface.
-
-- SQL used to resolve permission checks now aggregates permission rules before joining them to resources, improving performance on instances with large schemas. (:issue:`2832`)
-- The :ref:`PermissionCheckView` permission debugger now explains why a decision was allowed or denied, including the matching rules. The interactive form can also test a hypothetical actor supplied as JSON, and the :ref:`permissions documentation <authentication_permissions_explained>` now describes resolution rules in more detail. (:issue:`2841`)
-- :ref:`db.execute_write(sql, ..., transaction=True) <database_execute_write>` has a new ``transaction=`` parameter, which can be set to ``False`` for statements such as ``VACUUM`` that cannot run inside a transaction. Write tasks now start their transactions using ``BEGIN IMMEDIATE``, which also ensures that writes are rolled back if the task fails. (:issue:`2831`)
-- Refreshing a database's schema in Datasette's internal catalog is now performed as a single atomic operation. (:issue:`2831`)
-- Fixed schema introspection, table pages, facets and table counts for tables with names containing a ``]`` character. Thanks, `TowyTowy <https://github.com/TowyTowy>`__. (:issue:`2431`, :pr:`2846`)
-- ``/-/plugins.json`` once again returns a top-level JSON array of plugin objects, reverting the object envelope introduced in 1.0a36. This should fix a large number of trivial test failures in existing plugins. (:issue:`2842`, :pr:`2843`)
-
 .. _v1_0_a36:
 
 1.0a36 (2026-07-07)

docs/conf.py

@@ -1,3 +1,5 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
 #
 # Datasette documentation build configuration file, created by
 # sphinx-quickstart on Thu Nov 16 06:50:13 2017.

docs/contributing.rst

@@ -434,13 +434,10 @@ Datasette bundles `CodeMirror <https://codemirror.net/>`__ for the SQL editing i
 
     npm i codemirror @codemirror/lang-sql
 
-* Build the bundle using the version number from package.json with::
+* Build the bundle with::
 
-    node_modules/.bin/rollup datasette/static/cm-editor-6.0.1.js \
+    npm install && npm run build:codemirror
-      -f iife \
-      -n cm \
-      -o datasette/static/cm-editor-6.0.1.bundle.js \
-      -p @rollup/plugin-node-resolve \
-      -p @rollup/plugin-terser
 
-* Update the version reference in the ``codemirror.html`` template.
+  This runs ``rollup -c`` against the ``rollup.config.mjs`` file at the root of the repository, which reads ``datasette/static/cm-editor.js`` and writes the bundled, minified output to ``datasette/static/cm-editor.bundle.js``. The bundle filename does not include the CodeMirror version number, so no template needs to be updated.
+
+* Commit the rebuilt ``datasette/static/cm-editor.bundle.js`` - the bundle is checked into the repository.

docs/facets.rst

@@ -14,8 +14,6 @@ Here's `an example <https://congress-legislators.datasettes.com/legislators/legi
 
 Facets can be specified in two ways: using query string parameters, or in ``metadata.json`` configuration for the table.
 
-Facet queries are generated by Datasette and summarize rows the actor already has permission to view. They do not require the :ref:`actions_execute_sql` permission. Use the :ref:`setting_allow_facet` setting to control whether users can request facets using query string parameters.
-
 Facets in query strings
 -----------------------
 

docs/full_text_search.rst

@@ -52,11 +52,11 @@ Configuring full-text search for a table or view
 
 If a table has a corresponding FTS table set up using the ``content=`` argument to ``CREATE VIRTUAL TABLE`` shown below, Datasette will detect it automatically and add a search interface to the table page for that table.
 
-You can also manually configure which table should be used for full-text search using table configuration in ``datasette.yaml`` (see :ref:`table_configuration_fts`). You can set the associated FTS table for a specific table and you can also set one for a view - if you do that, the page for that SQL view will offer a search option.
+You can also manually configure which table should be used for full-text search using query string parameters or table configuration in ``datasette.yaml`` (see :ref:`table_configuration_fts`). You can set the associated FTS table for a specific table and you can also set one for a view - if you do that, the page for that SQL view will offer a search option.
 
-The legacy ``?_fts_table=x`` and ``?_fts_pk=col`` query string parameters are accepted only if they exactly match the configured or automatically detected FTS mapping. They cannot be used to select a different FTS table or primary key. This prevents a public table from being used to probe the contents of a private FTS table.
+Use ``?_fts_table=x`` to over-ride the FTS table for a specific page. If the primary key was something other than ``rowid`` you can use ``?_fts_pk=col`` to set that as well. This is particularly useful for views, for example:
 
-Searching also requires the current actor to have ``view-table`` permission for the FTS table itself, in addition to permission to view the table or view being searched.
+https://latest.datasette.io/fixtures/searchable_view?_fts_table=searchable_fts&_fts_pk=pk
 
 The ``fts_table`` metadata property can be used to specify an associated FTS table. If the primary key column in your table which was used to populate the FTS table is something other than ``rowid``, you can specify the column to use with the ``fts_pk`` property.
 

docs/internals.rst

@@ -1594,32 +1594,32 @@ datasette.client
 
 Plugins can make internal simulated HTTP requests to the Datasette instance within which they are running. This ensures that all of Datasette's external JSON APIs are also available to plugins, while avoiding the overhead of making an external HTTP call to access those APIs.
 
-The ``datasette.client`` object is a wrapper around the `HTTPX2 Python library <https://httpx2.pydantic.dev/>`__, providing an async-friendly API that is similar to the widely used `Requests library <https://requests.readthedocs.io/>`__.
+The ``datasette.client`` object is a wrapper around the `HTTPX Python library <https://www.python-httpx.org/>`__, providing an async-friendly API that is similar to the widely used `Requests library <https://requests.readthedocs.io/>`__.
 
 It offers the following methods:
 
-``await datasette.client.get(path, **kwargs)`` - returns HTTPX2 Response
+``await datasette.client.get(path, **kwargs)`` - returns HTTPX Response
     Execute an internal GET request against that path.
 
-``await datasette.client.post(path, **kwargs)`` - returns HTTPX2 Response
+``await datasette.client.post(path, **kwargs)`` - returns HTTPX Response
     Execute an internal POST request. Use ``data={"name": "value"}`` to pass form parameters.
 
-``await datasette.client.options(path, **kwargs)`` - returns HTTPX2 Response
+``await datasette.client.options(path, **kwargs)`` - returns HTTPX Response
     Execute an internal OPTIONS request.
 
-``await datasette.client.head(path, **kwargs)`` - returns HTTPX2 Response
+``await datasette.client.head(path, **kwargs)`` - returns HTTPX Response
     Execute an internal HEAD request.
 
-``await datasette.client.put(path, **kwargs)`` - returns HTTPX2 Response
+``await datasette.client.put(path, **kwargs)`` - returns HTTPX Response
     Execute an internal PUT request.
 
-``await datasette.client.patch(path, **kwargs)`` - returns HTTPX2 Response
+``await datasette.client.patch(path, **kwargs)`` - returns HTTPX Response
     Execute an internal PATCH request.
 
-``await datasette.client.delete(path, **kwargs)`` - returns HTTPX2 Response
+``await datasette.client.delete(path, **kwargs)`` - returns HTTPX Response
     Execute an internal DELETE request.
 
-``await datasette.client.request(method, path, **kwargs)`` - returns HTTPX2 Response
+``await datasette.client.request(method, path, **kwargs)`` - returns HTTPX Response
     Execute an internal request with the given HTTP method against that path.
 
 These methods can be used with :ref:`internals_datasette_urls` - for example:
@@ -1636,7 +1636,7 @@ These methods can be used with :ref:`internals_datasette_urls` - for example:
 
 ``datasette.client`` methods automatically take the current :ref:`setting_base_url` setting into account, whether or not you use the ``datasette.urls`` family of methods to construct the path.
 
-For documentation on available ``**kwargs`` options and the shape of the HTTPX2 Response object refer to the `HTTPX2 Async documentation <https://httpx2.pydantic.dev/async/>`__.
+For documentation on available ``**kwargs`` options and the shape of the HTTPX Response object refer to the `HTTPX Async documentation <https://www.python-httpx.org/async/>`__.
 
 .. _internals_datasette_client_actor:
 
@@ -2023,8 +2023,8 @@ Example usage:
 
 .. _database_execute_write:
 
-await db.execute_write(sql, params=None, block=True, request=None, return_all=False, returning_limit=10, transaction=True, time_limit_ms=2000)
+await db.execute_write(sql, params=None, block=True, request=None, return_all=False, returning_limit=10)
-----------------------------------------------------------------------------------------------------------------------------------------------
+--------------------------------------------------------------------------------------------------------
 
 SQLite only allows one database connection to write at a time. Datasette handles this for you by maintaining a queue of writes to be executed against a given database. Plugins can submit write operations to this queue and they will be executed in the order in which they are received.
 
@@ -2059,16 +2059,7 @@ If you need to retrieve every row returned by a statement, pass ``return_all=Tru
 
 If you pass ``block=False`` this behavior changes to "fire and forget" - queries will be added to the write queue and executed in a separate thread while your code can continue to do other things. The method will return a UUID representing the queued task.
 
-Each call to ``execute_write()`` will be executed inside a transaction. Pass
+Each call to ``execute_write()`` will be executed inside a transaction.
-``transaction=False`` for statements such as ``VACUUM`` that cannot run inside
-a transaction.
-
-Write statements have a default time limit of 2,000ms. Pass a different value
-using ``time_limit_ms=`` or use ``time_limit_ms=None`` to allow the statement to
-run without a time limit.
-
-This write limit is independent of the ``sql_time_limit_ms`` setting used for
-read queries. Changing that setting does not change the default write limit.
 
 .. _database_execute_write_script:
 
@@ -2630,12 +2621,12 @@ This example uses trace to record the start, end and duration of any HTTP GET re
 .. code-block:: python
 
     from datasette.tracer import trace
-    import httpx2
+    import httpx
 
 
     async def fetch_url(url):
         with trace("fetch-url", url=url):
-            async with httpx2.AsyncClient() as client:
+            async with httpx.AsyncClient() as client:
                 return await client.get(url)
 
 .. _internals_tracer_trace_child_tasks:

docs/introspection.rst

@@ -80,15 +80,18 @@ Shows a list of currently installed plugins and their versions. `Plugins example
 
 .. code-block:: json
 
-    [
+    {
-        {
+        "ok": true,
-            "name": "datasette_cluster_map",
+        "plugins": [
-            "static": true,
+            {
-            "templates": false,
+                "name": "datasette_cluster_map",
-            "version": "0.10",
+                "static": true,
-            "hooks": ["extra_css_urls", "extra_js_urls", "extra_body_script"]
+                "templates": false,
-        }
+                "version": "0.10",
-    ]
+                "hooks": ["extra_css_urls", "extra_js_urls", "extra_body_script"]
+            }
+        ]
+    }
 
 Add ``?all=1`` to include details of the default plugins baked into Datasette.
 

docs/json_api.rst

@@ -152,6 +152,62 @@ Values for named SQL parameters can be provided as additional query string param
 
 The response uses the same default representation described above.
 
+.. _json_api_editor_schema:
+
+.. _DatabaseEditorSchemaView:
+
+Schema for SQL editors
+----------------------
+
+The ``/-/editor-schema.json`` endpoint returns a machine-readable description of
+a database's tables, views and columns, shaped for SQL editor autocomplete. It
+powers Datasette's own CodeMirror SQL editor and is available for external
+consumers such as embeddable editor components.
+
+::
+
+    GET /<database>/-/editor-schema.json
+
+Access requires both the :ref:`actions_view_database` and
+:ref:`actions_execute_sql` permissions for the database - the same gate as the
+inline editor schema on the SQL query page. A request that fails either check
+receives a ``403`` JSON error that does not reveal any table or column names.
+
+The response is a neutral structure - a ``database`` name and a list of
+``tables``, each with a ``view`` flag (``true`` for SQL views) and a list of
+``columns`` carrying the SQLite declared ``type`` (an empty string when the
+column has no declared type):
+
+.. code-block:: json
+
+    {
+      "database": "fixtures",
+      "tables": [
+        {
+          "name": "facetable",
+          "view": false,
+          "columns": [
+            {"name": "pk", "type": "INTEGER"},
+            {"name": "state", "type": "TEXT"}
+          ]
+        },
+        {
+          "name": "paginated_view",
+          "view": true,
+          "columns": [
+            {"name": "content", "type": "TEXT"}
+          ]
+        }
+      ]
+    }
+
+Hidden tables - such as the shadow tables that back SQLite full-text search -
+are excluded from the response.
+
+This endpoint is distinct from the :ref:`database schema endpoint <DatabaseSchemaView>`
+at ``/<database>/-/schema.json``, which returns the raw ``CREATE`` statements as
+a SQL string.
+
 .. _json_api_shapes:
 
 Different shapes
@@ -1661,8 +1717,6 @@ The request body is always parsed as JSON, regardless of the request's ``Content
 
 The row-based write APIs can write :ref:`binary values in JSON <binary_json_format>` using Datasette's Base64 representation for BLOB data.
 
-Structured inserts, upserts, updates and deletes only support ordinary SQLite tables. Virtual tables and their internal shadow tables are rejected, including when adding rows to an existing table through the create-table API. Writes to ordinary content tables can still update full-text search indexes through configured triggers.
-
 .. _ExecuteWriteView:
 
 Executing write SQL

docs/json_api_doc.py

@@ -46,7 +46,7 @@ def table_extras(cog):
     cog.out("\n")
     for scope, heading, intro, classes in classes_by_scope:
         cog.out("{}\n{}\n\n".format(heading, "~" * len(heading)))
-        cog.out(f"{intro}\n\n")
+        cog.out("{}\n\n".format(intro))
         for cls in classes:
             examples = _examples_for_scope(cls, scope)
             description = cls.description or ""
@@ -58,16 +58,16 @@ def table_extras(cog):
             if notes:
                 description = "{} ({})".format(description, " ".join(notes)).strip()
 
-            cog.out(f"``{cls.key()}``\n")
+            cog.out("``{}``\n".format(cls.key()))
-            cog.out(f"    {description}\n\n")
+            cog.out("    {}\n\n".format(description))
             for example in examples:
                 if example.path:
                     value = live_examples[(example.path, example.key or cls.key())]
-                    cog.out(f"    ``GET {example.path}``\n\n")
+                    cog.out("    ``GET {}``\n\n".format(example.path))
                 else:
                     value = example.value
                 if example.note:
-                    cog.out(f"    {example.note}\n\n")
+                    cog.out("    {}\n\n".format(example.note))
                 cog.out("    .. code-block:: json\n\n")
                 cog.out(textwrap.indent(json.dumps(value, indent=2), "        "))
                 cog.out("\n\n")
@@ -139,7 +139,7 @@ async def _fetch_live_examples(scoped_classes):
                     response = await datasette.client.get(example.path)
                     assert response.status_code == 200, example.path
                     data = response.json()
-                    assert key in data, f"{key} missing from {example.path}"
+                    assert key in data, "{} missing from {}".format(key, example.path)
                     examples[(example.path, key)] = data[key]
         finally:
             for db in datasette.databases.values():

docs/metadata_doc.py

@@ -1,8 +1,7 @@
 import json
 import textwrap
-
-from ruamel.yaml import YAML
 from yaml import safe_dump
+from ruamel.yaml import YAML
 
 
 def metadata_example(cog, data=None, yaml=None):
@@ -34,10 +33,10 @@ def config_example(
     else:
         data = input
         output_yaml = safe_dump(input, sort_keys=False)
-    cog.out(f"\n.. tab:: {yaml_title}\n\n")
+    cog.out("\n.. tab:: {}\n\n".format(yaml_title))
     cog.out("    .. code-block:: yaml\n\n")
     cog.out(textwrap.indent(output_yaml, "        "))
-    cog.out(f"\n\n.. tab:: {json_title}\n\n")
+    cog.out("\n\n.. tab:: {}\n\n".format(json_title))
     cog.out("    .. code-block:: json\n\n")
     cog.out(textwrap.indent(json.dumps(data, indent=2), "        "))
     cog.out("\n")
@@ -45,10 +44,8 @@ def config_example(
 
 def internal_schema(cog):
     import asyncio
-
-    from sqlite_utils import Database
-
     from datasette.app import Datasette
+    from sqlite_utils import Database
 
     ds = Datasette()
     db = ds.get_internal_database()

docs/plugins.rst

@@ -261,15 +261,6 @@ If you run ``datasette plugins --all`` it will include default plugins that ship
                 "permission_resources_sql"
             ]
         },
-        {
-            "name": "datasette.default_permissions.sqlite_statistics",
-            "static": false,
-            "templates": false,
-            "version": null,
-            "hooks": [
-                "permission_resources_sql"
-            ]
-        },
         {
             "name": "datasette.default_permissions.tokens",
             "static": false,

docs/settings.rst

@@ -71,8 +71,6 @@ Should users be able to execute arbitrary SQL queries by default?
 
 Setting this to ``off`` causes permission checks for :ref:`actions_execute_sql` to fail by default.
 
-This setting controls the ability to submit arbitrary SQL. It does not disable structured table-browsing features that use SQL generated by Datasette, such as sorting, column filters and :ref:`facets`. Use :ref:`setting_allow_facet` to control whether users can request facets.
-
 ::
 
     datasette mydatabase.db --setting default_allow_sql off
@@ -256,8 +254,6 @@ Default HTTP caching max-age header in seconds, used for ``Cache-Control: max-ag
 
     datasette mydatabase.db --setting default_cache_ttl 60
 
-Dynamic responses for authenticated actors, requests with cookies or an ``Authorization`` header, and responses that set cookies use ``Cache-Control: private, no-store``. This takes precedence over ``default_cache_ttl`` and ``?_ttl=``, even when cache headers are otherwise disabled. Anonymous dynamic responses vary by ``Cookie`` and ``Authorization``. Static assets retain their own cache policy.
-
 .. _setting_cache_size_kb:
 
 cache_size_kb

docs/template_context.rst

@@ -168,6 +168,9 @@ The page for arbitrary SQL queries (/database/-/query?sql=...) and stored querie
 ``db_is_immutable`` - ``bool``
     Boolean indicating if this database is immutable
 
+``default_table`` - ``str``
+    Name of the focal table for this query, if any - set when the query page was reached from a table-scoped context (such as the table page's 'View and edit SQL' link) so the SQL editor can complete that table's columns unprefixed. ``None`` otherwise, including for stored/canned queries.
+
 ``display_rows`` - ``list``
     List of result rows formatted for HTML display. Each row is a list of rendered cell values in the same order as ``columns``.