mutiple fixes

opus_submitter/accounts/models.py

@@ -2,6 +2,14 @@ from django.contrib.auth.models import AbstractUser
 from django.db import models
 
 
+class UserQuerySet(models.QuerySet):
+    pass
+
+
+class UserManager(models.Manager.from_queryset(UserQuerySet)):
+    pass
+
+
 class CustomUser(AbstractUser):
     """Custom User model to store CAS attributes from PolyLAN."""
 
@@ -14,6 +22,11 @@ class CustomUser(AbstractUser):
     # Additional fields that might come from CAS
     cas_attributes = models.JSONField(default=dict, blank=True)
 
+    objects = UserManager()
+
+    class Meta:
+        _base_manager_name = "objects"
+
     def __str__(self):
         return f"{self.username} ({self.cas_user_id})"