Add management command to purge caches

website/contrib/wagtail_cache_purge/management/commands/purge_cache.py

@@ -0,0 +1,21 @@
+from argparse import ArgumentParser
+
+from django.core.cache import DEFAULT_CACHE_ALIAS, caches
+from django.core.management.base import BaseCommand
+
+
+class Command(BaseCommand):
+    def add_arguments(self, parser: ArgumentParser) -> None:
+        parser.add_argument(
+            "cache",
+            type=str,
+            default=DEFAULT_CACHE_ALIAS,
+            nargs="?",
+            choices=list(caches),
+            help="Cache alias. Default: %(default)s",
+        )
+
+    def handle(self, *args: list, **options: dict) -> None:
+        cache_alias = options["cache"]
+        self.stdout.write(f"Purging cache {cache_alias}")
+        caches[cache_alias].clear()

website/settings.py

@@ -44,6 +44,7 @@ INSTALLED_APPS = [
     "website.contrib.mermaid_block",
     "website.contrib.unsplash",
     "website.contrib.singleton_page",
+    "website.contrib.wagtail_cache_purge",
     "wagtail.contrib.forms",
     "wagtail.contrib.redirects",
     "wagtail.contrib.modeladmin",