refector: 调整一下结构

test_server/examtest/views.py

@@ -551,7 +551,7 @@ class ExamTestViewSet(PageOrNot, ModelViewSet):
     @transaction.atomic
     def create(self, request, *args, **kwargs):
         serializer = MoniTestSerializer(data = request.data)
-        if serializer.is_valid():
+        serializer.is_valid(raise_exception=True)
         instance = serializer.save(consumer = request.user)
         if 'questions' in request.data:
             questions = []
@@ -565,7 +565,7 @@ class ExamTestViewSet(PageOrNot, ModelViewSet):
                 question['is_right'] = i['is_right']
                 questions.append(question)
             serializer_detail = AnswerDetailCreateSerializer(data=questions, many=True)
-                if serializer_detail.is_valid():
+            serializer_detail.is_valid(raise_exception=True)
             serializer_detail.save()
             # 关联正式考试如有
             if request.data.get('exam', None):
@@ -576,13 +576,7 @@ class ExamTestViewSet(PageOrNot, ModelViewSet):
                 if exam.auto_issue and instance.is_pass:
                     issue(instance)
             return Response(MoniTestSerializer(instance).data,status=status.HTTP_200_OK)
-                else:
-                    return Response(serializer_detail.errors)
-
-            else:
-                return Response({'error':'答题记录不存在'})
-        else:
-            return Response(serializer.errors)
+        raise ParseError('答题记录不存在')
     
     @action(methods=['get'], detail=False,
             url_path='export', url_name='export_test', perms_map=[{'*':'export_test'}])