Question

我尝试序列化查询集。但是我得到了 {'non_field_errors'：[ErrorDetail（string ='Expected a items of list but but type type“ QuerySet”。'，code ='not_a_list'）]} 错误。如何解决这个错误。

    def post(self, request):
        data = request.data
        user_name = data.get('username')
        signup_filtered_data = Signup.objects.filter(username= user_name).values()
        print(signup_filtered_data)
        serializer = SignupSerializer(data= signup_filtered_data, many=True)
        serializer.is_valid()
        print(serializer.errors)
        signup_jason_data = json.dumps(serializer.data)
        return HttpResponse(signup_jason_data)

models.py

class Signup(models.Model):
    first_name = models.CharField(max_length=50, blank=True, null=True)
    last_name = models.CharField(max_length=50, blank=True, null=True)
    email = models.EmailField(max_length=50, unique= True)
    phone_number = models.CharField(max_length=12, unique= True)
    username = models.CharField(max_length=50, unique= True)
    password = models.CharField(max_length=50, blank=True, null=True)

serializers.py

class SignupSerializer(serializers.ModelSerializer):

    class Meta:
        model = Signup
        fields = '__all__'

Answer 1

当您将数据传递给序列化程序时，您在视图中使用了many = True，但实际上您只发送了一条消息。

def post(self, request, formate = None):
   serializer = SignupSerializer(data= signup_filtered_data)

查看实际答案： Actual answer

Answer 2

一种更简洁的方法是使用基于类的视图的过滤器和序列化器一个例子是使用mixins。

Mixins DjangoRest

FilterBackend DjangoRest

Pagination DjangoRest

Permissions Classes DjangoRest

filters.py

class SignupFilter(django_filters.FilterSet):

    class Meta:
        model = Signup
        fields = [
            'user_name',
        ]

views.py

class YourNameView(mixins.CreateModelMixin,
                   viewsets.GenericViewSet):

    permission_classes = [permissions.IsAuthenticated, ] # Permission Classes
    pagination_class = PageNumberPagination # Pagination Classes
    serializer_class = SignupSerializer # Your Serializer
    filter_backends = [DjangoFilterBackend] #This need to added on settings.py
    filter_class = SignupFilter # Your filter Class
    queryset = Signup.objects.all() 

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

Django rest Framework-需要项目列表，但类型为“ QuerySet”

2 个答案: