陷入类型错误：__ init __（）需要1个位置参数，但是给出了2个

Question

我正在关注此特定教程（tutorial link）以使我的动态表单集正常工作。我遇到了这个错误，我不确定它源于何处或如何解决它。有人能告诉我可以做些什么来解决它吗？是的，我知道这是一个重复的问题。我已经完成了很多这些答案，但在我的案例中无法弄清楚。

查看代码：

    class ProfileList(ListView):
    model = Profile

class ProfileFamilyMemberCreate(CreateView):
    model = Profile
    fields = ['first_name', 'last_name']
    success_url = reverse_lazy('purchase_order')

    def get_context_data(self, **kwargs):
        data = super(ProfileFamilyMemberCreate, self).get_context_data(**kwargs)
        if self.request.POST:
            data['familymembers'] = FamilyMemberFormSet(self.request.POST)
        else:
            data['familymembers'] = FamilyMemberFormSet()
        return data

    def form_valid(self, form):
        context = self.get_context_data()
        familymembers = context['familymembers']
        with transaction.atomic():
            self.object = form.save()

            if familymembers.is_valid():
                familymembers.instance = self.object
                familymembers.save()
        return super(ProfileFamilyMemberCreate, self).form_valid(form)

Forms.py

class FamilyMemberForm(forms.ModelForm):
    class Meta:
        model = FamilyMember
        exclude = ()

FamilyMemberFormSet = inlineformset_factory(Profile, FamilyMember,
                                            form=FamilyMemberForm, extra=1)

回溯：

回溯：

File "/Users/thahaabdulwahid/miniconda3/envs/projectEnv/lib/python3.6/site-packages/django/core/handlers/exception.py" in inner
  35.             response = get_response(request)

File "/Users/thahaabdulwahid/miniconda3/envs/projectEnv/lib/python3.6/site-packages/django/core/handlers/base.py" in _get_response
  128.                 response = self.process_exception_by_middleware(e, request)

File "/Users/thahaabdulwahid/miniconda3/envs/projectEnv/lib/python3.6/site-packages/django/core/handlers/base.py" in _get_response
  126.                 response = wrapped_callback(request, *callback_args, **callback_kwargs)

Exception Type: TypeError at /documents/purchase_order/
Exception Value: __init__() takes 1 positional argument but 2 were given

Answer 1

您的问题与formset无关，但是在url配置中。对于基于类的视图，您需要在模式中调用其as_view()方法：

 url(r'^purchase_order/$', views.ProfileList.as_view(), name='purchase_order')

请参阅documentation for class-based views。