Django接口报paymentForOrderID参数缺失及重复值拦截问题求助

• 1. 路由配置不匹配：视图函数addProductPaymentResponse声明了必须传入位置参数paymentForOrderID，但当前请求路径/api/payments/product-payment-add-response/没有携带该路径参数，Django无法自动注入参数导致报错。
• 2. ORM查询语法错误：ProductPayment.objects.all()返回的是查询集对象，查询集没有objects属性，后续调用response_list.objects.filter()属于语法错误。
• 3. 冗余参数冲突：如果采用路径传paymentForOrderID的方案，创建记录时又从请求体data['paymentForOrderID']取值，可能出现两者不一致的问题。
• 4. 拼写错误：返回提示里的recieved拼写错误，正确拼写为received。

提供两种可选方案，按需选择即可：

方案一：将paymentForOrderID作为路径参数传入 #

第一步：修改urls.py路由配置 #

在对应app的urls.py中，给接口路径加上参数匹配规则：

path('product-payment-add-response/<str:paymentForOrderID>/', views.addProductPaymentResponse, name='add-product-payment')

前端发起请求时，需要把订单ID拼在路径中，比如给订单123提交支付记录，请求路径为/api/payments/product-payment-add-response/123/

第二步：修复views.py代码 #

@api_view(['POST'])
@permission_classes([IsAuthenticated])
def addProductPaymentResponse(request, paymentForOrderID):
    user = request.user
    data = request.data
    # 修复ORM查询语法错误
    alreadyExists = ProductPayment.objects.filter(paymentForOrderID=paymentForOrderID).exists()
    
    if alreadyExists:
        # 修复拼写错误
        content = {'detail': 'Sorry Response has already been received'}
        return Response(content, status=status.HTTP_400_BAD_REQUEST)
    else:
        product = ProductPayment.objects.create(
                user=user,
                # 统一使用路径传入的paymentForOrderID，避免参数不一致
                paymentForOrderID=paymentForOrderID,
                paymentMethodUsed=data['paymentMethodUsed'],
                aproxTimeAndDateOfPayment=data['aproxTimeAndDateOfPayment'],
                totalAmountPaid=data['totalAmountPaid'],
                paymentDetails=data['paymentDetails'],
            )
        return Response('Payment Response added')

方案二：paymentForOrderID完全从请求体获取 #

不需要修改路由，直接调整视图函数参数即可：

@api_view(['POST'])
@permission_classes([IsAuthenticated])
def addProductPaymentResponse(request): # 移除位置参数声明
    user = request.user
    data = request.data
    # 从请求体获取paymentForOrderID并做非空校验
    paymentForOrderID = data.get('paymentForOrderID')
    if not paymentForOrderID:
        return Response({'detail': 'Missing paymentForOrderID parameter'}, status=status.HTTP_400_BAD_REQUEST)
    
    alreadyExists = ProductPayment.objects.filter(paymentForOrderID=paymentForOrderID).exists()
    
    if alreadyExists:
        content = {'detail': 'Sorry Response has already been received'}
        return Response(content, status=status.HTTP_400_BAD_REQUEST)
    else:
        product = ProductPayment.objects.create(
                user=user,
                paymentForOrderID=paymentForOrderID,
                paymentMethodUsed=data['paymentMethodUsed'],
                aproxTimeAndDateOfPayment=data['aproxTimeAndDateOfPayment'],
                totalAmountPaid=data['totalAmountPaid'],
                paymentDetails=data['paymentDetails'],
            )
        return Response('Payment Response added')

内容的提问来源于stack exchange，提问作者Faisal Nazik