✨ Display warning icon when cookiegroup has no cookies

cookie_consent/admin.py

@@ -1,4 +1,9 @@
 from django.contrib import admin
+from django.db.models import Count
+from django.templatetags.l10n import localize
+from django.templatetags.static import static
+from django.utils.html import format_html
+from django.utils.translation import gettext_lazy as _
 
 from .conf import settings
 from .models import Cookie, CookieGroup, LogItem
@@ -12,7 +17,14 @@ class CookieAdmin(admin.ModelAdmin):
 
 
 class CookieGroupAdmin(admin.ModelAdmin):
-    list_display = ("varname", "name", "is_required", "is_deletable", "get_version")
+    list_display = (
+        "varname",
+        "name",
+        "is_required",
+        "is_deletable",
+        "num_cookies",
+        "get_version",
+    )
     search_fields = (
         "varname",
         "name",
@@ -22,6 +34,22 @@ class CookieGroupAdmin(admin.ModelAdmin):
         "is_deletable",
     )
 
+    def get_queryset(self, request):
+        qs = super().get_queryset(request)
+        return qs.annotate(num_cookies=Count("cookie"))
+
+    @admin.display(ordering="num_cookies", description=_("# cookies"))
+    def num_cookies(self, obj):
+        if (count := obj.num_cookies) > 0:
+            return localize(count)
+
+        return format_html(
+            '{count} <img src="{src}" alt="{alt}">',
+            count=localize(count),
+            src=static("admin/img/icon-alert.svg"),
+            alt=_("Warning icon for missing cookies in cookie group."),
+        )
+
 
 class LogItemAdmin(admin.ModelAdmin):
     list_display = ("action", "cookiegroup", "version", "created")

tests/test_admin.py

@@ -0,0 +1,24 @@
+from django.test import Client
+from django.urls import reverse
+
+import pytest
+from pytest_django.asserts import assertContains
+
+from cookie_consent.models import CookieGroup
+
+pytestmark = pytest.mark.django_db
+
+
+def test_warning_icon_for_missing_cookies(
+    admin_client: Client,
+    required_cookiegroup: CookieGroup,
+    optional_cookiegroup: CookieGroup,
+):
+    optional_cookiegroup.cookie_set.all().delete()
+
+    admin_list_response = admin_client.get(
+        reverse("admin:cookie_consent_cookiegroup_changelist")
+    )
+
+    assert admin_list_response.status_code == 200
+    assertContains(admin_list_response, "admin/img/icon-alert", count=1)