- [x] `extra_css_urls(template, database, table, datasette)` - [x] `extra_js_urls(template, database, table, datasette)` - [x] `extra_body_script(template, database, table, view_name, datasette)` - [x] `extra_template_vars(template, database, table, view_name, request, datasette)` _Originally posted by @simonw in https://github.com/simonw/datasette/issues/938#issuecomment-674544691_