Expose current SQLite row to render_cell hook, closes #1300

datasette/hookspecs.py

@@ -60,7 +60,7 @@ def publish_subcommand(publish):
 
 
 @hookspec
-def render_cell(value, column, table, database, datasette):
+def render_cell(row, value, column, table, database, datasette):
     """Customize rendering of HTML table cell values"""
 
 

datasette/views/database.py

@@ -375,6 +375,7 @@ class QueryView(DataView):
                     # pylint: disable=no-member
                     plugin_display_value = None
                     for candidate in pm.hook.render_cell(
+                        row=row,
                         value=value,
                         column=column,
                         table=None,

datasette/views/table.py

@@ -895,6 +895,7 @@ async def display_columns_and_rows(
             # pylint: disable=no-member
             plugin_display_value = None
             for candidate in pm.hook.render_cell(
+                row=row,
                 value=value,
                 column=column,
                 table=table_name,

docs/plugin_hooks.rst

@@ -373,12 +373,15 @@ Examples: `datasette-publish-fly <https://datasette.io/plugins/datasette-publish
 
 .. _plugin_hook_render_cell:
 
-render_cell(value, column, table, database, datasette)
-------------------------------------------------------
+render_cell(row, value, column, table, database, datasette)
+-----------------------------------------------------------
 
 Lets you customize the display of values within table cells in the HTML table view.
 
-``value`` - string, integer or None
+``row`` - ``sqlite.Row``
+    The SQLite row object that the value being rendered is part of
+
+``value`` - string, integer, float, bytes or None
     The value that was loaded from the database
 
 ``column`` - string

tests/plugins/my_plugin.py

@@ -98,12 +98,13 @@ def extra_body_script(
 
 
 @hookimpl
-def render_cell(value, column, table, database, datasette):
+def render_cell(row, value, column, table, database, datasette):
     async def inner():
         # Render some debug output in cell with value RENDER_CELL_DEMO
         if value == "RENDER_CELL_DEMO":
             return json.dumps(
                 {
+                    "row": dict(row),
                     "column": column,
                     "table": table,
                     "database": database,

tests/test_plugins.py

@@ -181,12 +181,13 @@ def test_hook_render_cell_demo(app_client):
     response = app_client.get("/fixtures/simple_primary_key?id=4")
     soup = Soup(response.body, "html.parser")
     td = soup.find("td", {"class": "col-content"})
-    assert {
+    assert json.loads(td.string) == {
+        "row": {"id": "4", "content": "RENDER_CELL_DEMO"},
         "column": "content",
         "table": "simple_primary_key",
         "database": "fixtures",
         "config": {"depth": "table", "special": "this-is-simple_primary_key"},
-    } == json.loads(td.string)
+    }
 
 
 @pytest.mark.parametrize(