{"id": "changelog:javascript-plugins", "page": "changelog", "ref": "javascript-plugins", "title": "JavaScript plugins", "content": "Datasette now includes a  JavaScript plugins mechanism , allowing JavaScript to customize Datasette in a way that can collaborate with other plugins. \n                 This provides two initial hooks, with more to come in the future: \n                 \n                     \n                         makeAboveTablePanelConfigs()  can add additional panels to the top of the table page. \n                     \n                     \n                         makeColumnActions()  can add additional actions to the column menu. \n                     \n                 \n                 Thanks  Cameron Yick  for contributing this feature. ( #2052 )", "breadcrumbs": "[\"Changelog\", \"1.0a8 (2024-02-07)\"]", "references": "[{\"href\": \"https://github.com/hydrosquall\", \"label\": \"Cameron Yick\"}, {\"href\": \"https://github.com/simonw/datasette/pull/2052\", \"label\": \"#2052\"}]"}
{"id": "changelog:minor-fixes", "page": "changelog", "ref": "minor-fixes", "title": "Minor fixes", "content": "Datasette no longer attempts to run SQL queries in parallel when rendering a table page, as this was leading to some rare crashing bugs. ( #2189 ) \n                     \n                     \n                         Fixed warning:  DeprecationWarning: pkg_resources is deprecated as an API  ( #2057 ) \n                     \n                     \n                         Fixed bug where  ?_extra=columns  parameter returned an incorrectly shaped response. ( #2230 )", "breadcrumbs": "[\"Changelog\", \"1.0a8 (2024-02-07)\"]", "references": "[{\"href\": \"https://github.com/simonw/datasette/issues/2189\", \"label\": \"#2189\"}, {\"href\": \"https://github.com/simonw/datasette/issues/2057\", \"label\": \"#2057\"}, {\"href\": \"https://github.com/simonw/datasette/issues/2230\", \"label\": \"#2230\"}]"}
{"id": "changelog:plugin-hooks", "page": "changelog", "ref": "plugin-hooks", "title": "Plugin hooks", "content": "New  jinja2_environment_from_request(datasette, request, env)  plugin hook, which can be used to customize the current Jinja environment based on the incoming request. This can be used to modify the template lookup path based on the incoming request hostname, among other things. ( #2225 ) \n                     \n                     \n                         New  family of template slot plugin hooks :  top_homepage ,  top_database ,  top_table ,  top_row ,  top_query ,  top_canned_query . Plugins can use these to provide additional HTML to be injected at the top of the corresponding pages. ( #1191 ) \n                     \n                     \n                         \n                             \n                                 New  track_event() mechanism  for plugins to emit and receive events when certain events occur within Datasette. ( #2240 ) \n                                 \n                                     \n                                         \n                                             Plugins can register additional event classes using  register_events(datasette) . \n                                         \n                                         \n                                             They can then trigger those events with the  datasette.track_event(event)  internal method. \n                                         \n                                         \n                                             Plugins can subscribe to notifications of events using the  track_event(datasette, event)  plugin hook. \n                                         \n                                         \n                                             Datasette core now emits  login ,  logout ,  create-token ,  create-table ,  drop-table ,  insert-rows ,  upsert-rows ,  update-row ,  delete-row  events,  documented here . \n                                         \n                                     \n                                 \n                             \n                         \n                     \n                     \n                         New internal function for plugin authors:  await db.execute_isolated_fn(fn) , for creating a new SQLite connection, executing code and then closing that connection, all while preventing other code from writing to that particular database. This connection will not have the  prepare_connection()  plugin hook executed against it, allowing plugins to perform actions that might otherwise be blocked by existing connection configuration. ( #2218 )", "breadcrumbs": "[\"Changelog\", \"1.0a8 (2024-02-07)\"]", "references": "[{\"href\": \"https://github.com/simonw/datasette/issues/2225\", \"label\": \"#2225\"}, {\"href\": \"https://github.com/simonw/datasette/issues/1191\", \"label\": \"#1191\"}, {\"href\": \"https://github.com/simonw/datasette/issues/2240\", \"label\": \"#2240\"}, {\"href\": \"https://github.com/simonw/datasette/issues/2218\", \"label\": \"#2218\"}]"}