fix cuser_role model and add unique together

apps/cuser/migrations/0010_alter_cuserrole_unique_together.py

@@ -0,0 +1,18 @@
+# Generated by Django 4.2.1 on 2024-01-23 07:21
+
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('workspace', '0013_alter_workspace_cuser_owner'),
+        ('cuser', '0009_cuserrole_cuser'),
+    ]
+
+    operations = [
+        migrations.AlterUniqueTogether(
+            name='cuserrole',
+            unique_together={('cuser', 'role_type', 'sys_ws')},
+        ),
+    ]

apps/cuser/models.py

@@ -30,6 +30,9 @@ class CuserRole(BaseModel):
     uuid = models.UUIDField(default=uuid.uuid4, editable=False, unique=True)
     is_active = models.BooleanField(default=False)
 
+    class Meta:
+        unique_together = ('cuser', 'role_type', 'sys_ws', )
+
     def __str__(self):
         return f'{str(self.cuser) } - { str(self.id) }'