형식 오류 : __init의 __()가 <a href="https://docs.djangoproject.com/en/1.11/topics/forms/formsets/#passing-custom-parameters-to-formset-forms" rel="nofollow noreferrer">"Passing custom parameters to formset forms"</a>에 장고 문서를 다음에서 장고 양식 및 해당 formset

Question

에서 예기치 않은 키워드 인수를 가지고, 내가 반환 된 다음 얻을 : 여기

__init__() got an unexpected keyword argument 'choices' 


File "/Users/emilepetrone/Envs/kishikoi/lib/python3.6/site-packages/django/utils/functional.py" in __get__ 
    35.   res = instance.__dict__[self.name] = self.func(instance) 

File "/Users/emilepetrone/Envs/kishikoi/lib/python3.6/site-packages/django/forms/formsets.py" in forms 
    144.     for i in range(self.total_form_count())] 

File "/Users/emilepetrone/Envs/kishikoi/lib/python3.6/site-packages/django/forms/formsets.py" in <listcomp> 
    144.     for i in range(self.total_form_count())] 

File "/Users/emilepetrone/Envs/kishikoi/lib/python3.6/site-packages/django/forms/formsets.py" in _construct_form 
    182.   form = self.form(**defaults) 

File "/Users/emilepetrone/Sites/kishikoi/kishikoi/transactions/forms.py" in __init__ 
    119.   super(SoldTransactionForm, self).__init__(*args, **kwargs) 

Exception Type: TypeError at /transactions/create/sell/transactions/31tmhqsplg41jc8c/ 
Exception Value: __init__() got an unexpected keyword argument 'choices' 

내가 문서와 패스를 따라 내 생각이다 formset form_kwargs에서 'choices'를 선택하십시오. 내가) (form.is_valid에서 다른 필드를 업데이트하려면이 필드를 사용되기 때문에 나는 forms.Form을 사용하고 & Formset-

class SellTransactionsView(LoginRequiredMixin, SetHeadlineMixin, UpdateView): 
    model = Transaction 
    template_name = "transactions/soldtransaction_form.html" 
    headline = "Sell Transaction" 
    fields = ['num_shares'] 

    def get_object(self): 
     return Transaction.objects.get(
      user=self.request.user, 
      identifier=self.kwargs['identifier'] 
     ) 

    def get_choices(self): 
     transaction = self.get_object() 
     choices = Transaction.objects.filter(
      user=transaction.user, 
     ).exclude(identifier=transaction.identifier) 
     return choices 

    def get_context_data(self, *args, **kwargs): 
     context = super(SellTransactionsView, self).get_context_data(
      *args, **kwargs) 
     choices = self.get_choices() 
     formset = SoldFormset(form_kwargs={'choices': choices}) 
     context.update({ 
      "formset": formset, 
     }) 
     return context 

내 양식.

class SoldTransactionForm(forms.Form): 

    old_transaction = forms.ChoiceField() 

    num_shares = forms.IntegerField(
     min_value=0 
    ) 

    class Meta: 
     fields = [ 
      'old_transaction', 
      'num_shares', 
     ] 

    def __init__(self, *args, **kwargs): 
     super(SoldTransactionForm, self).__init__(*args, **kwargs) 
     self.fields['old_transaction'].queryset = kwargs.pop('choices') 

SoldFormset = forms.formset_factory(
    SoldTransactionForm, 
    formset=forms.BaseFormSet, 
    extra=2 
) 

이 충돌 다른 사람에 대한 해결책

의 kwargs.pop ('선택') 형태로 슈퍼() 이상 할 필요가 없었다. 초기화

이 오류를 해결했지만 ChoiceField에 데이터를로드하지 않고 formset을 표시했습니다. .. I합니다 (초기화 문제를 해결 변경 될 수있는 ModelChoiceField & 세트의 검색어 = 없음에 필드를 변경

Answer 1

팝 super 문의하기 전에 :

def __init__(self, *args, **kwargs): 

     queryset = kwargs.pop('choices') 

     super(SoldTransactionForm, self).__init__(*args, **kwargs) 

     self.fields['old_transaction'].queryset = queryset