Add grade filter to user search widget and enhance logging for bulk add operations

generic/models.py

@@ -1967,6 +1967,13 @@ class ExamCollection(models.Model, AuthorMixin):
         if UserUserGroup is None:
             raise RuntimeError("UserUserGroup model not available")
 
+        # Debug: log what we received
+        try:
+            group_pks = [g.pk for g in groups] if groups is not None else []
+        except Exception:
+            group_pks = []
+        logger.debug("bulk_add_user_user_groups called on collection=%s with groups=%s exam_types=%s", self.pk, group_pks, exam_types)
+
         # Normalize groups to a list of model instances
         if groups is None:
             return 0
@@ -1994,9 +2001,21 @@ class ExamCollection(models.Model, AuthorMixin):
             for exam in exams:
                 # Each exam model exposes a `user_user_groups` ManyToManyField
                 try:
+                    before_pks = set(exam.user_user_groups.values_list('pk', flat=True))
                     exam.user_user_groups.add(*groups_qs)
                     # Ensure any downstream signals / caches see the change
                     exam.save()
+                    after_pks = set(exam.user_user_groups.values_list('pk', flat=True))
+                    # log if expected group pks are not present after add
+                    try:
+                        expected_pks = {g.pk for g in groups_qs}
+                    except Exception:
+                        expected_pks = set()
+                    if not expected_pks.issubset(after_pks):
+                        logger.warning(
+                            "After add, exam %s missing expected user_user_groups; before=%s after=%s expected=%s",
+                            getattr(exam, 'pk', exam), sorted(before_pks), sorted(after_pks), sorted(expected_pks),
+                        )
                     updated += 1
                 except Exception as e:
                     logger.exception("Failed to add user_user_groups to exam %s: %s", getattr(exam, 'pk', exam), e)
@@ -2011,6 +2030,13 @@ class ExamCollection(models.Model, AuthorMixin):
         if CidUserGroup is None:
             raise RuntimeError("CidUserGroup model not available")
 
+        # Debug: log what we received
+        try:
+            group_pks = [g.pk for g in groups] if groups is not None else []
+        except Exception:
+            group_pks = []
+        logger.debug("bulk_add_cid_user_groups called on collection=%s with groups=%s exam_types=%s", self.pk, group_pks, exam_types)
+
         if groups is None:
             return 0
 
@@ -2033,8 +2059,19 @@ class ExamCollection(models.Model, AuthorMixin):
             for exam in exams:
                 # Each exam model exposes a `cid_user_groups` ManyToManyField
                 try:
+                    before_pks = set(exam.cid_user_groups.values_list('pk', flat=True))
                     exam.cid_user_groups.add(*groups_qs)
                     exam.save()
+                    after_pks = set(exam.cid_user_groups.values_list('pk', flat=True))
+                    try:
+                        expected_pks = {g.pk for g in groups_qs}
+                    except Exception:
+                        expected_pks = set()
+                    if not expected_pks.issubset(after_pks):
+                        logger.warning(
+                            "After add, exam %s missing expected cid_user_groups; before=%s after=%s expected=%s",
+                            getattr(exam, 'pk', exam), sorted(before_pks), sorted(after_pks), sorted(expected_pks),
+                        )
                     updated += 1
                 except Exception as e:
                     logger.exception("Failed to add cid_user_groups to exam %s: %s", getattr(exam, 'pk', exam), e)