发布成功但前端响应错误

Question

我通过 127.0.0.8000/post/ 发布数据。我的帖子当然是成功的，因为我能够成功地看到我在 127.0.0.8000 的基本 URL 中发布的内容，但我在 Django 前端收到以下响应。

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

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

在 VS Code 中，我在终端My Views.Py

@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()

PS 我也无法在第二种方法中通过 ID 获取个人数据，它不起作用

Answer 1

您应该从您的视图/API 返回一个响应实例

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