Post 成功但响应是前端错误

Question

我正在 post 通过 127.0.0.8000/post/ 传输数据。我的 post 当然是成功的，因为我能够成功地看到我在 127.0.0.8000 的基 URL 中 post 编辑的内容，但我在 Django 前端得到以下响应.

AssertionError at /post/
Expected a `Response`, `HttpResponse` or `HttpStreamingResponse` to be returned from the view, but received a `<class 'NoneType'>`

在 VS Code 中，我在终端中收到以下错误

Internal Server Error: /post/
Traceback (most recent call last):
  File "C:\Users\Ahmed\AppData\Local\Programs\Python\Python310\lib\site-packages\django\core\handlers\exception.py", line 47, in inner
    response = get_response(request)
  File "C:\Users\Ahmed\AppData\Local\Programs\Python\Python310\lib\site-packages\django\core\handlers\base.py", line 181, in _get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "C:\Users\Ahmed\AppData\Local\Programs\Python\Python310\lib\site-packages\django\views\decorators\csrf.py", line 54, in wrapped_view
    return view_func(*args, **kwargs)
  File "C:\Users\Ahmed\AppData\Local\Programs\Python\Python310\lib\site-packages\django\views\generic\base.py", line 69, in view
    return self.dispatch(request, *args, **kwargs)
  File "C:\Users\Ahmed\AppData\Local\Programs\Python\Python310\lib\site-packages\rest_framework\views.py", line 511, in dispatch
    self.response = self.finalize_response(request, response, *args, **kwargs)
  File "C:\Users\Ahmed\AppData\Local\Programs\Python\Python310\lib\site-packages\rest_framework\views.py", line 423, in finalize_response
    assert isinstance(response, HttpResponseBase), (
AssertionError: Expected a `Response`, `HttpResponse` or `HttpStreamingResponse` to be returned from the view, but received a `<class 'NoneType'>`
[27/Feb/2022 16:22:13] "POST /post/ HTTP/1.1" 500 74030
[27/Feb/2022 16:22:24] "GET / HTTP/1.1" 200 5799

我的Views.Py如下

@api_view(['GET'])
def getData(request):
    queryset = Wallet.objects.all()
    serializer = WalletSerializer(queryset, many=True, context={'request': request})
    return Response(serializer.data)

@api_view(['GET'])
def getSingleData(request,pk):
    queryset = Wallet.objects.all(id=pk)
    serializer = WalletSerializer(queryset, many=False)
    return Response(serializer.data)

@api_view(['POST'])
def postData(request):
    serializer = WalletSerializer(data = request.data)
    if serializer.is_valid():
        serializer.save()

P.S 第二种方法我也无法通过ID获取个人数据，不行

Answer 1

您应该 return 来自您的 view/API

的响应实例

@api_view(['POST'])
def postData(request):
    serializer = WalletSerializer(data=request.data)
    if serializer.is_valid():
        serializer.save()
        <b>return Response(serializer.data)
    return Response(serializer.errors)</b>

Post 成功但响应是前端错误

Post successful but response is an error on front end

python

rest

django-rest-framework