Automatically create UserConfig for users

netbox/users/migrations/0005_create_userconfigs.py

@@ -0,0 +1,27 @@
+from django.contrib.auth import get_user_model
+from django.db import migrations
+
+
+def create_userconfigs(apps, schema_editor):
+    """
+    Create an empty UserConfig instance for each existing User.
+    """
+    User = get_user_model()
+    UserConfig = apps.get_model('users', 'UserConfig')
+    UserConfig.objects.bulk_create(
+        [UserConfig(user_id=user.pk) for user in User.objects.all()]
+    )
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('users', '0004_userconfig'),
+    ]
+
+    operations = [
+        migrations.RunPython(
+            code=create_userconfigs,
+            reverse_code=migrations.RunPython.noop
+        ),
+    ]