multiform.py 文件源码

def __init__(self, *args, **kwargs):
        """
        Filter our arguments that don't make sense for formsets as base_forms.
        Should be moved to multiforms itself.
        """
        base_forms = self.get_base_forms()
        formset_names = [name for name, form in base_forms.items()
                         if issubclass(form, formsets.BaseFormSet)]

        invalid_formset_kwargs = [
            'instance', 'empty_permitted', 'label_suffix'
        ]

        def filter_function(name, value):
            if name in formset_names:
                return multiform.InvalidArgument
            else:
                return value

        for kwarg in invalid_formset_kwargs:
            setattr(self, 'dispatch_init_{}'.format(kwarg), filter_function)

        return super().__init__(*args, **kwargs)