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@@ -2,6 +2,7 @@ from django.apps import apps
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from django.contrib.contenttypes.models import ContentType
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from django.contrib.postgres.aggregates import JSONBAgg
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from django.db.models import OuterRef, Subquery, Q
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+from django.db.utils import ProgrammingError
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from extras.models.tags import TaggedItem
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from utilities.query_functions import EmptyGroupByJSONBAgg
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@@ -160,7 +161,13 @@ class ObjectChangeQuerySet(RestrictedQuerySet):
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def valid_models(self):
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# Exclude any change records which refer to an instance of a model that's no longer installed. This
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# can happen when a plugin is removed but its data remains in the database, for example.
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+ try:
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+ content_types = ContentType.objects.get_for_models(*apps.get_models()).values()
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+ except ProgrammingError:
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+ # Handle the case where the database schema has not yet been initialized
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+ content_types = ContentType.objects.none()
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+
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content_type_ids = set(
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- ct.pk for ct in ContentType.objects.get_for_models(*apps.get_models()).values()
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+ ct.pk for ct in content_types
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)
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return self.filter(changed_object_type_id__in=content_type_ids)
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