Question

在我非常简单的学习应用程序中，我想在模型变为“完成”时触发一些逻辑。具体来说，我将以下有效负载传递给我的视图集：

{
   complete: true
}

如下：

class TestQuestionViewset(viewsets.ModelViewSet):

    queryset = TestQuestion.objects.all()
    serializer_class = TestQuestionSerializer

我想触发一些逻辑服务器端，一旦完成标记被更新，该逻辑服务器端就会被触发。

我可以覆盖更新方法吗？如果是这样，我该怎么办？

Answer 1

尝试

class TestQuestionViewset(viewsets.ModelViewSet):
    queryset = TestQuestion.objects.all()
    serializer_class = TestQuestionSerializer

    def update(self, request, *args, **kwargs):
        partial = kwargs.pop('partial', False)
        instance = self.get_object()
        if partial:
            old_complete_value = instance.complete
        serializer = self.get_serializer(instance, data=request.data, partial=partial)
        serializer.is_valid(raise_exception=True)
        self.perform_update(serializer)

        if partial and old_complete_value is False:
            instance.refresh_from_db()
            if instance.complete:
                ...
                # do your logic here

        if getattr(instance, '_prefetched_objects_cache', None):
            # If 'prefetch_related' has been applied to a queryset, we need to
            # forcibly invalidate the prefetch cache on the instance.
            instance._prefetched_objects_cache = {}

        return Response(serializer.data)

在Django Rest Framework上向PATCH添加逻辑

1 个答案: