Question

我正在处理如何在Django中制作自定义表单，现在我仍然坚持提交步骤。

当我按提交时，我收到__init__() got multiple values for keyword argument 'networkList'。

我的forms.py：

class SimpleDeploy(forms.Form):
    def __init__(self, networkList, policiesList, applicationList, *args, **kwargs):
        super(SimpleDeploy, self).__init__(*args, **kwargs)
        if networkList and policiesList and applicationList:
            self.fields['Network Partition ID:'] = forms.ChoiceField(choices=networkList)
            self.fields['Application Policy ID:'] = forms.ChoiceField(choices=policiesList)
            self.fields['Application ID:'] = forms.ChoiceField(choices=applicationList)
        else:
            self.fields['Network Partition ID:'] = forms.ChoiceField(choices='No network partitions found')
            self.fields['Application Policy ID'] = forms.ChoiceField(choices='No application policies found')
            self.fields['Application ID:'] = forms.ChoiceField(choices='No applications found')

在我的views.py上，该方法如下：

def simpleDeploy(request):
    netList = getDetailsNetworkPartitions(request)
    polList = getDetailsApplicationPolicies(request)
    appList = getDetailsApplications(request)
    if request.method == 'POST':
        form = SimpleDeploy(request.POST, networkList=None, policiesList=None, applicationList=None)
        if form.is_valid():
            network = form.cleaned_data['Network Partition ID:']
            policy = form.cleaned_data['Application Policy ID:']
            application = form.cleaned_data['Application ID:']
            ##### more things
        else:
            simpleForm = SimpleDeploy(networkList=netList, policiesList=polList, applicationList=appList)
    else:
        simpleForm = SimpleDeploy(networkList=netList, policiesList=polList, applicationList=appList)
    return render(request, 'apacheStratos/simpleDeploy.html', {'form': simpleForm})

追溯错误：

Traceback:
File "/usr/local/lib/python2.7/dist-packages/Django-1.8.12-py2.7.egg/django/core/handlers/base.py" in get_response
  132.                     response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "/home/iago/Escritorio/tfm/website/apacheStratos/views.py" in simpleDeploy
  60.         form = SimpleDeploy(request.POST, networkList=None, policiesList=None, applicationList=None)

Exception Type: TypeError at /stratos/simpleDeploy
Exception Value: __init__() got multiple values for keyword argument 'networkList'

查看文档，我读到POST请求它始终是第一个参数（request.Post），在init方法上我认为它与self对应，而且在其他答案中我看到了有时，data=params有效，但在我的情况下，我收到错误：need more than 1 value to unpack <{1}}

回溯：

if form.is_valid():

那么，这是我的错误？谢谢和问候。

Answer 1

您已定义表单init，以便第一个位置参数为networkList;因此，当您执行form = SimpleDeploy(request.POST, networkList=None...)时，位置arg和关键字arg都会使用相同的名称，这是不允许的。

根本不要改变签名;从kwargs获得额外的值。

def __init__(self, *args, **kwargs):
    networkList = kwargs.pop('networkList', None)
    policiesList = kwargs.pop('policiesList', None)
    applicationList = kwargs.pop('applicationList', None)
    super(...)

或者，由于您只需要表单中的那些值，您可以考虑将请求传递给此方法并直接在那里获取这些值;相同的语法将适用。

提交ChoiceField表单Django

1 个答案: