fix some collection issues

atlas/views.py

@@ -2824,3 +2824,25 @@ def collection_question_schemas(request, exam_id: int):
             "case_details": case_details,
         },
     )
+
+def collection_reset_answers(request, exam_id: int):
+    if request.htmx:
+        collection = get_object_or_404(CaseCollection, pk=exam_id)
+
+        # Select all case details (answers are linked to these)
+        case_details = collection.casedetail_set.all().prefetch_related()
+
+        # Delete all answers
+        cid_answers = case_details.cidreportanswer_set.all()
+        user_answers = case_details.userreportanswer_set.all()
+
+        
+        # User statuses
+        collection.exam_user_status.all().delete()
+
+        # CidUserExams
+        CidUserExam.objects.filter(exam=collection).delete()
+        
+
+    else:
+        raise Http404("Invalid request")