Mark FTS-related tables as 'hidden' in inspect()

Refs #129

datasette/app.py

@@ -778,14 +778,34 @@ class Datasette:
                         if column_names and len(column_names) == 2 and 'id' in column_names:
                             label_column = [c for c in column_names if c != 'id'][0]
                         tables[table] = {
+                            'name': table,
+                            'columns': column_names,
                             'count': count,
                             'label_column': label_column,
+                            'hidden': False,
                         }
 
                     foreign_keys = get_all_foreign_keys(conn)
                     for table, info in foreign_keys.items():
                         tables[table]['foreign_keys'] = info
 
+                    # Mark tables 'hidden' if they relate to FTS virtual tables
+                    fts_tables = [
+                        r['name']
+                        for r in conn.execute(
+                            '''
+                                select name from sqlite_master
+                                where rootpage = 0
+                                and sql like '%VIRTUAL TABLE%USING FTS%'
+                            '''
+                        )
+                    ]
+                    for t in tables.keys():
+                        for fts_table in fts_tables:
+                            if t == fts_table or t.startswith(fts_table):
+                                tables[t]['hidden'] = True
+                                continue
+
                 self._inspect[name] = {
                     'hash': m.hexdigest(),
                     'file': str(path),

tests/test_inspect.py

@@ -16,6 +16,8 @@ CREATE TABLE "election_results" (
   FOREIGN KEY (office) REFERENCES office(id)
  );
 
+CREATE VIRTUAL TABLE "election_results_fts" USING FTS4 ("county", "party");
+
 CREATE TABLE "county" (
   "id" INTEGER PRIMARY KEY ,
   "name" TEXT
@@ -42,7 +44,32 @@ def ds_instance():
         yield Datasette([filepath])
 
 
-def test_inspect(ds_instance):
+def test_inspect_hidden_tables(ds_instance):
+    info = ds_instance.inspect()
+    tables = info['test_tables']['tables']
+    expected_hidden = (
+        'election_results_fts',
+        'election_results_fts_content',
+        'election_results_fts_docsize',
+        'election_results_fts_segdir',
+        'election_results_fts_segments',
+        'election_results_fts_stat',
+    )
+    expected_visible = (
+        'election_results',
+        'county',
+        'party',
+        'office',
+    )
+    assert sorted(expected_hidden) == sorted(
+        [table for table in tables if tables[table]['hidden']]
+    )
+    assert sorted(expected_visible) == sorted(
+        [table for table in tables if not tables[table]['hidden']]
+    )
+
+
+def test_inspect_foreign_keys(ds_instance):
     info = ds_instance.inspect()
     tables = info['test_tables']['tables']
     for table_name in ('county', 'party', 'office'):