Nicer labels for object type dropdown

wagtail/admin/filters.py

@@ -99,3 +99,21 @@ class WagtailFilterSet(django_filters.FilterSet):
             params.setdefault('widget', BooleanButtonSelect)
 
         return filter_class, params
+
+
+class ContentTypeModelChoiceField(django_filters.fields.ModelChoiceField):
+    """
+    Custom ModelChoiceField for ContentType, to show the model verbose name as the label rather
+    than the default 'wagtailcore | page' representation of a ContentType
+    """
+    def label_from_instance(self, obj):
+        model = obj.model_class()
+        if model:
+            return model._meta.verbose_name.capitalize()
+        else:
+            # no corresponding model class found; fall back on the name field of the ContentType
+            return obj.model
+
+
+class ContentTypeFilter(django_filters.ModelChoiceFilter):
+    field_class = ContentTypeModelChoiceField

wagtail/admin/views/reports/audit_logging.py

@@ -11,7 +11,7 @@ from django.db.models import IntegerField, Value
 from django.utils.encoding import force_str
 from django.utils.translation import gettext_lazy as _
 
-from wagtail.admin.filters import DateRangePickerWidget, WagtailFilterSet
+from wagtail.admin.filters import ContentTypeFilter, DateRangePickerWidget, WagtailFilterSet
 from wagtail.core.log_actions import registry as log_action_registry
 from wagtail.core.models import PageLogEntry
 
@@ -47,7 +47,7 @@ class SiteHistoryReportFilterSet(WagtailFilterSet):
     user = django_filters.ModelChoiceFilter(
         field_name='user', queryset=lambda request: get_users_for_filter()
     )
-    object_type = django_filters.ModelChoiceFilter(
+    object_type = ContentTypeFilter(
         label=_('Object type'),
         field_name='content_type', queryset=lambda request: get_content_types_for_filter()
     )