Question

因此，我有2个场景，其中一个起作用而一个不起作用。我在html模板中设置了一个选择框，其中包含一些在Scenrio2中可以看到的硬编码选项。我很想知道为什么Scenario2可以正常工作，而Scenario1会引发此错误。我还附加了下面的堆栈跟踪。

场景1（无效）：

    current_status = 'All'
    status_list = []

    all_status = RequisitionStatus.objects.all()
    for status in all_status:
        status_list.append(status.status)

    if request.Get.get('Filter') in status_list:
        user_req_lines_incomplete = RequisitionLine.objects.filter(Q(parent_req__username=request.user) & Q(status__status=request.Get.get('Filter')))
        current_status = request.Get.get('Filter')
    else:
        user_req_lines_incomplete = RequisitionLine.objects.filter(parent_req__username=request.user).exclude(status__status='Completed')

方案2（可行）：

if request.GET.get('Filter') == 'Created':
        user_req_lines_incomplete = RequisitionLine.objects.filter(Q(parent_req__username=request.user) & Q(status__status='Created'))
        current_status = 'Created'
    elif request.GET.get('Filter') == 'For Assistance':
        user_req_lines_incomplete = RequisitionLine.objects.filter(Q(parent_req__username=request.user) & Q(status__status='For Assistance'))
        current_status = 'For Assistance'
    elif request.GET.get('Filter') == 'Assistance Complete':
        user_req_lines_incomplete = RequisitionLine.objects.filter(Q(parent_req__username=request.user) & Q(status__status='Assistance Complete'))
        current_status = 'Assistance Complete'
    elif request.GET.get('Filter') == 'Assistance Rejected':
        user_req_lines_incomplete = RequisitionLine.objects.filter(Q(parent_req__username=request.user) & Q(status__status='Assistance Rejected'))
        current_status = 'Assistance Rejected'
    else:
        user_req_lines_incomplete = RequisitionLine.objects.filter(parent_req__username=request.user).exclude(status__status='Completed')

StackTrace：

Traceback:

File "C:\Users\Kevin.Pardo\Documents\Python\venv\env\lib\site-packages\django\core\handlers\exception.py" in inner
  34.             response = get_response(request)

File "C:\Users\Kevin.Pardo\Documents\Python\venv\env\lib\site-packages\django\core\handlers\base.py" in _get_response
  126.                 response = self.process_exception_by_middleware(e, request)

File "C:\Users\Kevin.Pardo\Documents\Python\venv\env\lib\site-packages\django\core\handlers\base.py" in _get_response
  124.                 response = wrapped_callback(request, *callback_args, **callback_kwargs)

File "C:\Users\Kevin.Pardo\Documents\Python\venv\env\lib\site-packages\django\contrib\auth\decorators.py" in _wrapped_view
  21.                 return view_func(request, *args, **kwargs)

File "C:\Users\Kevin.Pardo\Documents\Python\django\lambda\req\views.py" in pending_action
  241.     if request.Get.get('Filter') in status_list:

Exception Type: AttributeError at /req/pending/
Exception Value: 'WSGIRequest' object has no attribute 'Get'

Answer 1

与您遵循的方法无关。在您的第一种方法中，您编写：

if request.Get.get('Filter') in status_list:
  # ...

就像错误提示一样，request对象没有Get属性，只有GET属性。您在其余视图中也会犯同样的错误。

因此您可以使用以下方法解决此问题：

if request.GET.get('Filter') in status_list:
  # ...

您还（在两个视图中）在过滤中都写了parent_req__username=request.user，我认为最好使用parent_req=request.user或parent_req__username=request.user.username）。

实际上，您可以进一步改善这一点，例如：

current_status = 'All'
all_status = RequisitionStatus.objects.values_list('status', flat=True)
filter = request.GET.get('filter')

if filter in status_list:
    user_req_lines_incomplete = RequisitionLine.objects.filter(
        parent_req=request.user,
        status__status=filter
    )
    current_status = filter
else:
    user_req_lines_incomplete = RequisitionLine.objects.filter(
        parent_req=request.user
    ).exclude(
        status__status='Completed'
    )

Django-WSGIRequest'对象没有属性'Get'

StackTrace：

1 个答案: