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Add pks parameter to render_cell() plugin hook

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The render_cell() hook now receives a pks parameter containing the list
of primary key column names for the table being rendered. This avoids
plugins needing to make redundant async calls to look up primary keys.

For tables without an explicit primary key, pks is ["rowid"]. For custom
SQL queries and views, pks is an empty list [].

https://claude.ai/code/session_01HFYfevAziq4fSYTNRD9ZCh
This commit is contained in:
Claude 2026-02-17 18:21:25 +00:00 • committed by Simon Willison
commit 170f9de774
8 changed files with 62 additions and 5 deletions
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9
docs/plugin_hooks.rst
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@ -9,7 +9,7 @@ Each plugin can implement one or more hooks using the ``@hookimpl`` decorator ag
When you implement a plugin hook you can accept any or all of the parameters that are documented as being passed to that hook.
For example, you can implement the ``render_cell`` plugin hook like this even though the full documented hook signature is ``render_cell(row, value, column, table, database, datasette)``:
For example, you can implement the ``render_cell`` plugin hook like this even though the full documented hook signature is ``render_cell(row, value, column, table, pks, database, datasette, request)``:
.. code-block:: python
@ -474,8 +474,8 @@ Examples: `datasette-publish-fly <https://datasette.io/plugins/datasette-publish
.. _plugin_hook_render_cell:
render_cell(row, value, column, table, database, datasette, request)
--------------------------------------------------------------------
render_cell(row, value, column, table, pks, database, datasette, request)
-------------------------------------------------------------------------
Lets you customize the display of values within table cells in the HTML table view.
@ -491,6 +491,9 @@ Lets you customize the display of values within table cells in the HTML table vi
``table`` - string or None
The name of the table - or ``None`` if this is a custom SQL query
``pks`` - list of strings
The primary key column names for the table being rendered. For tables without an explicitly defined primary key, this will be ``["rowid"]``. For custom SQL queries and views (where ``table`` is ``None``), this will be an empty list ``[]``.
``database`` - string
The name of the database