core: fix missing serializer on AuthenticatedSession (#15323)

fix

Signed-off-by: Jens Langhammer <jens@goauthentik.io>

authentik/blueprints/tests/test_serializer_models.py

@@ -5,7 +5,6 @@ from collections.abc import Callable
 from django.apps import apps
 from django.test import TestCase
 
-from authentik.blueprints.v1.importer import is_model_allowed
 from authentik.lib.models import SerializerModel
 from authentik.providers.oauth2.models import RefreshToken
 
@@ -22,10 +21,13 @@ def serializer_tester_factory(test_model: type[SerializerModel]) -> Callable:
             return
         model_class = test_model()
         self.assertTrue(isinstance(model_class, SerializerModel))
+        # Models that have subclasses don't have to have a serializer
+        if len(test_model.__subclasses__()) > 0:
+            return
         self.assertIsNotNone(model_class.serializer)
         if model_class.serializer.Meta().model == RefreshToken:
             return
-        self.assertEqual(model_class.serializer.Meta().model, test_model)
+        self.assertTrue(issubclass(test_model, model_class.serializer.Meta().model))
 
     return tester
 
@@ -34,6 +36,6 @@ for app in apps.get_app_configs():
     if not app.label.startswith("authentik"):
         continue
     for model in app.get_models():
-        if not is_model_allowed(model):
+        if not issubclass(model, SerializerModel):
             continue
         setattr(TestModels, f"test_{app.label}_{model.__name__}", serializer_tester_factory(model))

authentik/core/models.py

@@ -1082,6 +1082,12 @@ class AuthenticatedSession(SerializerModel):
 
     user = models.ForeignKey(User, on_delete=models.CASCADE)
 
+    @property
+    def serializer(self) -> type[Serializer]:
+        from authentik.core.api.authenticated_sessions import AuthenticatedSessionSerializer
+
+        return AuthenticatedSessionSerializer
+
     class Meta:
         verbose_name = _("Authenticated Session")
         verbose_name_plural = _("Authenticated Sessions")