Use __fake__.User during migration.

djangocms_blog/migrations/0044_copy_plugins.py

@@ -2,8 +2,6 @@
 from django.contrib.auth import get_user_model
 from django.db import migrations, models
 
-User = get_user_model()
-
 
 class BareVersion:
     """Patches the save method of a model to standard model save."""
@@ -23,6 +21,12 @@ def move_plugins_to_blog_content(apps, schema_editor):
     """Adds instances for the new model.
     ATTENTION: All fields of the model must have a valid default value!"""
 
+    User = apps.get_model(*settings.AUTH_USER_MODEL.split("."))
+    Post = apps.get_model("djangocms_blog", "Post")
+    PostContent = apps.get_model("djangocms_blog", "PostContent")
+    ContentType = apps.get_model("contenttypes", "ContentType")
+    content_type, _ = ContentType.objects.get_or_create(app_label="djangocms_blog", model="postcontent")
+
     versioning_installed = apps.is_installed("djangocms_versioning")
     if versioning_installed:
         if getattr(settings, "CMS_MIGRATION_USER_ID", None):
@@ -32,11 +36,6 @@ def move_plugins_to_blog_content(apps, schema_editor):
     else:
         migration_user = None
 
-    Post = apps.get_model("djangocms_blog", "Post")
-    PostContent = apps.get_model("djangocms_blog", "PostContent")
-    ContentType = apps.get_model("contenttypes", "ContentType")
-    content_type, _ = ContentType.objects.get_or_create(app_label="djangocms_blog", model="postcontent")
-
     for post in Post.objects.all():
         if not post.postcontent_set.exists():
             # Not yet migrated