类型错误：detail() 缺少 1 个必需的位置参数：“请求”

Question

我是 Django 的新手。

最初我有这个基于函数的视图 -

@api_view(['GET', 'PUT', 'DELETE'])

def detail(self,request, pk):

"""

Retrieve, update or delete a product instance.

"""

try:

    product = latesttrial.objects.get(pk=pk)

    newproduct = latesttrial.objects.all()

except latesttrial.DoesNotExist:

    return Response(status=status.HTTP_404_NOT_FOUND)

if request.method == 'GET':

    serializer = latestSerializer(product,context={'request': request})

    return Response(serializer.data)

elif request.method == 'PUT':

    serializer = latestSerializer(product, data=request.data,context={'request': request})

    if serializer.is_valid():

        serializer.save()

        return Response(serializer.data)

    return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)

然后它给出了这个错误 -

TypeError: detail() missing 1 required positional argument: 'pk' 

为此，我根据此答案进行了这些更改- 缺少 1 个必需的位置参数：'pk'

然后我有了这个基于函数的视图

@api_view(['GET', 'PUT', 'DELETE'])

def detail(request, *args, **kwargs):

"""

Retrieve, update or delete a product instance.

"""

try:

    pk = self.kwargs.get('pk')

    product = latesttrial.objects.get(pk=pk)

    newproduct = latesttrial.objects.all()

except latesttrial.DoesNotExist:

    return Response(status=status.HTTP_404_NOT_FOUND)

if request.method == 'GET':

    pk = self.kwargs.get('pk')

    serializer = latestSerializer(product,context={'request': request})

    return Response(serializer.data)

elif request.method == 'PUT':

    pk = self.kwargs.get('pk')

    serializer = latestSerializer(product, data=request.data,context={'request': request})

    if serializer.is_valid():

        serializer.save()

        return Response(serializer.data)

    return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)

然后我有这个错误 -

TypeError: detail() missing 1 required positional argument: 'request'

Answer 1

您可以将更改恢复到以前的版本并进行更改：url(r'detail',detail,name="newfunction"),对此：url(r'detail(?P<pk>[0-9]+)/$',detail,name="newfunction"),