Row JSON now returns {"row": {...}}, closes #2612

/db/table/pk.json returns the row as an object in a "row" key instead of
a single-item "rows" list. Passing any ?_shape= returns the same shapes as
table JSON, so ?_shape=objects gets the previous "rows" list back.

This happens in the JSON renderer, so other output renderers still get the
"rows" list for row pages.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01GaqG8H8ajwxizKXdbGrtve

docs/json_api.rst

@@ -153,6 +153,29 @@ Values for named SQL parameters can be provided as additional query string param
 
 The response uses the same default representation described above.
 
+.. _json_api_row:
+
+Rows
+----
+
+Every row in a table has its own JSON URL, see :ref:`RowView`. The row is returned as an object in the ``"row"`` key:
+
+::
+
+    GET /fixtures/simple_primary_key/1.json
+
+.. code-block:: json
+
+    {
+      "ok": true,
+      "row": {
+        "id": 1,
+        "content": "hello"
+      }
+    }
+
+Pass any :ref:`?_shape= option <json_api_shapes>` to return the row using the same shapes as table JSON instead. ``?_shape=objects`` returns the table default representation, with the row as the only item in the ``"rows"`` list.
+
 .. _json_api_shapes:
 
 Different shapes
@@ -162,7 +185,7 @@ The ``_shape`` parameter can be used to access alternative formats for the
 ``rows`` key which may be more convenient for your application. There are three
 options:
 
-* ``?_shape=objects`` - ``"rows"`` is a list of JSON key/value objects - the default
+* ``?_shape=objects`` - ``"rows"`` is a list of JSON key/value objects - the default for tables and queries
 * ``?_shape=arrays`` - ``"rows"`` is a list of lists, where the order of values in each list matches the order of the columns
 * ``?_shape=array`` - a JSON array of objects - effectively just the ``"rows"`` key from the default representation
 * ``?_shape=array&_nl=on`` - a newline-separated list of JSON objects
@@ -942,12 +965,10 @@ The following extras are available for row JSON responses.
     .. code-block:: json
 
         {
-          "rows": [
-            {
-              "id": 4,
-              "content": "RENDER_CELL_DEMO"
-            }
-          ],
+          "row": {
+            "id": 4,
+            "content": "RENDER_CELL_DEMO"
+          },
           "render_cell": [
             {
               "content": "<strong>Custom rendered HTML</strong>"

docs/upgrade_guide.md

@@ -29,6 +29,23 @@ The URL for executing a SQL query now looks like this:
 
 **This isn't a breaking change.** API calls to the older ``/databasename?sql=...`` endpoint will redirect to the new ``databasename/-/query?sql=...`` endpoint. Upgrading to the new URL is recommended to avoid the overhead of the additional redirect.
 
+(upgrade_guide_v1_row_json)=
+### Row JSON returns a single ``"row"`` object
+
+The JSON for an individual row, such as ``/databasename/tablename/1.json``, previously returned that row as the only item in a ``"rows"`` list. It now returns it as an object in a ``"row"`` key:
+
+```json
+{
+  "ok": true,
+  "row": {
+    "id": 1,
+    "content": "hello"
+  }
+}
+```
+
+Add ``?_shape=objects`` to the URL to get a ``"rows"`` list containing that row instead, or use any other ``?_shape=`` option to get the same shapes as table JSON. See {ref}`json_api_row`.
+
 (upgrade_guide_v1_metadata)=
 ### Metadata changes