Django REST Framework：基于查询字符串参数的更新（）

Question

是否可以修改 ViewSet 的 update() 函数以根据查询字符串参数而不是 URL 资源名称或请求主体进行更新？

例如，我想触发这样的东西：

payload = {'field' : '2'}
r = requests.put("http://127.0.0.1:9876/job-defs?job-def-id=2", data=payload)

并在 job-def-id = 2 时更新我的字段。

我目前的情况是这样的：

class JobDefinitionsViewSet(mixins.ListModelMixin,
                        mixins.CreateModelMixin,
                        mixins.UpdateModelMixin,
                        mixins.DestroyModelMixin,
                        viewsets.GenericViewSet):

    serializer_class = JobDefinitionsSerializer

    def update(self, request, pk=None):
        job_def_id = self.request.query_params.get('job-def-id', None)
        super(JobDefinitionsViewSet, self).update(self, request, pk=job_def_id)

    ...
    # other unrelated code
    ...

我不太确定如何继续。我想尽可能多地重用 mixins.UpdateModelMixin 中的 update() 函数。感谢任何帮助。

Answer 1

假设你想使用相同的 url 来列出和检索实体的详细信息，区分是否存在 url 参数 job-def-id，这里是一个疯狂的想法：

class JobDefinitionsAllInOneView(mixins.UpdateModelMixin,
                                 mixins.DestroyModelMixin,
                                 mixins.ListModelMixin,
                                 mixins.CreateModelMixin,
                                 generics.GenericAPIView):

    queryset = JobDefinitions.objects.all()
    serializer_class = JobDefinitionsSerializer

    def get_object(self):
        job_def_id = self.request.query_params.get('job-def-id', None)
        if job_def_id is not None:
            self.kwargs['pk'] = job_def_id
        return super(JobDefinitionsAllInOneView, self).get_object()

    def put(self, request, *args, **kwargs):
        return self.update(request, *args, **kwargs)

    def get(self, request, *args, **kwargs):
        job_def_id = self.request.query_params.get('job-def-id', None)
        if job_def_id is not None:
            # return the details
            return self.retrieve(request, *args, **kwargs)
        else:
            # return a list
            return self.list(request, *args, **kwargs)

    def post(self, request, *args, **kwargs):
        return self.create(request, *args, **kwargs)

    def patch(self, request, *args, **kwargs):
        return self.partial_update(self, request, *args, **kwargs)
    def delete(self, request, *args, **kwargs):
        return self.destroy(self, request, *args, **kwargs)

我还没试过。我查看了 mixins

的源代码 here for get_object and here

Django REST Framework：基于查询字符串参数的更新（）

Django REST Framework : update() based on query string parameter

python

django

django-rest-framework