allow bulk adding cid candidates by group

generic/views.py

@@ -2890,7 +2890,7 @@ def user_group_add_by_email_user(request, group_id):
                 # Ignore invalid emails
                 pass
 
-        res = f"<div class='alert alert-primary'>Users added to {group.name} [{','.join(added)}]</div>"
+        res = f"<div class='alert alert-primary'>Users added to {group.name} [{','.join(added)} ({len(added)})]</div>"
 
         if invalid_emails:
             res += f"<br/><div class='alert alert-warning'>Invalid emails [{','.join(invalid_emails)}]</div>"
@@ -2928,6 +2928,27 @@ def cid_group_view_all(request):
         {"groups": groups, "view_all": True},
     )
 
+@user_is_cid_user_manager
+def cid_group_add_candidates_to_exams(request, group_id):
+    if request.htmx:
+        group = get_object_or_404(CidUserGroup, pk=group_id)
+
+        exam_id = request.POST.get("exam_id")
+        exam_type = request.POST.get("exam_type")
+
+        ExamModel = get_exam_model_from_app_name(exam_type)
+
+        exam = get_object_or_404(ExamModel, pk=exam_id)
+
+        if request.POST.get("action") == "remove":
+            exam.valid_cid_users.remove(*group.ciduser_set.all())
+            return HttpResponse(f"Candidates removed")
+        else:
+            exam.valid_cid_users.add(*group.ciduser_set.all())
+            return HttpResponse(f"Candidates added")
+        # exam.save()
+
+    raise PermissionDenied()  # or Http404
 
 @user_is_cid_user_manager
 def user_group_add_candidates_to_exams(request, group_id):