Do not return prepopulated fields for view only users

admin_view_permission/admin.py

@@ -201,6 +201,16 @@ def get_readonly_fields(self, request, obj=None):
 
         return tuple(readonly_fields)
 
+    def get_prepopulated_fields(self, request, obj=None):
+        """
+        If user has view only permission do not return any prepopulated configuration,
+        since it failes when creating a form
+        """
+        if (obj is None and self.has_add_permission(request)) or \
+                (obj is not None and self._has_change_only_permission(request, obj)):
+            return super(AdminViewPermissionBaseModelAdmin, self).get_prepopulated_fields(request, obj)
+        return {}
+
     def get_actions(self, request):
         """
         Override this funciton to remove the actions from the changelist view