使用D jango rest framework json api发布和读取元数据

Question

我正在使用Django rest framework json api，并尝试在我的JSON:API post请求中发布一些元数据。

let user = {
    data: {
        type: "User",
        attributes: {
            type: "individual",
            status: "active"
        },
        relationships: {
            individual: {
                data: {
                    type: "Individual",
                    id: applicant.id
                }
            }
        },
        meta: {
            message: vm.createApplicantAccountMessage 
        } // <------ This is the meta info
    }
};
JsonApiService.create('users', user);

但是我不知道如何在我的视图集perform_create函数中读取它。

class UserViewSet(BaseViewSet):
    queryset = User.objects.none()
    serializer_class = UserSerializer
    filterset_class = UserFilterSet

    def perform_create(self, serializer):
        # TODO: Find out how to read what is inside the meta message here

感谢任何人的帮助！

Answer 1

我假设您的BaseViewSet继承自viewsets.ModelViewSet，或者至少是mixins.CreateModelMixin，那么您可以重写create方法。例如：

class UserViewSet(BaseViewSet):
    queryset = User.objects.none()
    serializer_class = UserSerializer
    filterset_class = UserFilterSet

    def create(self, request, *args, **kwargs):
        print(request.data) # <- you can see coming data with request.data
        serializer = self.get_serializer(data=request.data)
        serializer.is_valid(raise_exception=True)
        self.perform_create(serializer)
        # if you do not have custom logic then you can simply return super()
        # return super().create(request, *args, **kwargs)
        return Response(serializer.data, status=status.HTTP_201_CREATED)