{"id": "plugin_hooks:plugin-hook-extra-css-urls", "page": "plugin_hooks", "ref": "plugin-hook-extra-css-urls", "title": "extra_css_urls(template, database, table, columns, view_name, request, datasette)", "content": "This takes the same arguments as  extra_template_vars(...) \n                 Return a list of extra CSS URLs that should be included on the page. These can\n                    take advantage of the CSS class hooks described in  Custom pages and templates . \n                 This can be a list of URLs: \n                 from datasette import hookimpl\n\n\n@hookimpl\ndef extra_css_urls():\n    return [\n        \"https://stackpath.bootstrapcdn.com/bootstrap/4.1.0/css/bootstrap.min.css\"\n    ] \n                 Or a list of dictionaries defining both a URL and an\n                     SRI hash : \n                 @hookimpl\ndef extra_css_urls():\n    return [\n        {\n            \"url\": \"https://stackpath.bootstrapcdn.com/bootstrap/4.1.0/css/bootstrap.min.css\",\n            \"sri\": \"sha384-9gVQ4dYFwwWSjIDZnLEWnxCjeSWFphJiwGPXr1jddIhOegiu1FwO5qRGvFXOdJZ4\",\n        }\n    ] \n                 This function can also return an awaitable function, useful if it needs to run any async code: \n                 @hookimpl\ndef extra_css_urls(datasette):\n    async def inner():\n        db = datasette.get_database()\n        results = await db.execute(\n            \"select url from css_files\"\n        )\n        return [r[0] for r in results]\n\n    return inner \n                 Examples:  datasette-cluster-map ,  datasette-vega", "breadcrumbs": "[\"Plugin hooks\", \"Page extras\"]", "references": "[{\"href\": \"https://www.srihash.org/\", \"label\": \"SRI hash\"}, {\"href\": \"https://datasette.io/plugins/datasette-cluster-map\", \"label\": \"datasette-cluster-map\"}, {\"href\": \"https://datasette.io/plugins/datasette-vega\", \"label\": \"datasette-vega\"}]"}