Django 表单集：如何将变量传递给表单？

如何解决Django 表单集：如何将变量传递给表单？

我正在尝试将变量household_size 从views.py 传递到forms.py。但是，我不断收到一条错误消息：init() 得到了一个意外的关键字参数 'household_size'

#views.py

household_size = request.user.profile.children + request.user.profile.adults + request.user.profile.seniors
formset_class = modelformset_factory(Cart,form=CheckOut,extra=0)
formset = formset_class(queryset=users_cart_queryset,)


if request.method == 'POST':
    formset = formset_class(request.POST,household_size=household_size)
    if formset.is_valid():
        print('valid')
        #work do checks 
        for form in formset:
            if (form.instance.quantity < 1):
                form.instance.delete()
            else:
                #limit,points,in stock
                household_size = request.user.profile.children + request.user.profile.adults + request.user.profile.seniors
                if ( (form.instance.limit * household_size) > form.instance.quantity):
                    messages.error(request,"You've exceeded the limit for " + form.instance.item_name + ". The limit per house")
                
        formset.save()
        return redirect('/cart')
    else:
        print("not valid")
        print(formset.errors)
        formset = formset_class(queryset=users_cart_queryset)
else:
    print("not post")
    formset = formset_class(queryset=users_cart_queryset,household_size=household_size)

context = {'formset':formset,'household_size':household_size}
return render(request,'cart.html',context)

#forms.py

class CheckOut(ModelForm):
def __init__(self,*args,**kwargs):
    household_size = kwargs.pop('household_size')
    super(CheckOut,self).__init__(*args,**kwargs)
    self.fields['quantity'].widget.attrs.update(
        {'max': (self.instance.limit * household_size)},)

quantity = forms.IntegerField(widget=forms.TextInput(attrs={'type':'number','min':0,'style':'max-width: 3em'}))

class Meta: 
    model = Cart
    fields = ('quantity',)