minor update

civicfix/core/models.py

@@ -1,5 +1,6 @@
 from django.contrib.auth.models import AbstractUser
 from django.core.validators import FileExtensionValidator
+from django.conf import settings
 from django.db import models
 
 class User(AbstractUser):
@@ -98,15 +99,24 @@ class Department(models.Model):
     description = models.TextField(blank=True, null=True)
     created_at = models.DateTimeField(auto_now_add=True)
 
+    # Each department can have many users
     users = models.ManyToManyField(
-        User,
+        settings.AUTH_USER_MODEL,
         related_name="departments",
-        blank=True,
-        limit_choices_to={'is_staff': True} 
+        blank=True
+    )
+
+    # One admin per department
+    admin = models.OneToOneField(
+        settings.AUTH_USER_MODEL,
+        on_delete=models.SET_NULL,
+        related_name="admin_of_department",
+        null=True,
+        blank=True
     )
 
     class Meta:
         ordering = ["name"]
 
     def __str__(self):
-        return self.name.name
+        return self.name