forms.py 文件源码

def __init__(self, data=None, files=None, instance=None, save_as_new=None,
                 prefix=None, queryset=None, **kwargs):
        opts = self.model._meta
        self.instance = instance
        self.rel_name = '-'.join((
            opts.app_label, opts.model_name,
            self.ct_field.name, self.ct_fk_field.name,
        ))
        if self.instance is None or self.instance.pk is None:
            qs = self.model._default_manager.none()
        else:
            if queryset is None:
                queryset = self.model._default_manager
            qs = queryset.filter(**{
                self.ct_field.name: ContentType.objects.get_for_model(
                    self.instance, for_concrete_model=self.for_concrete_model),
                self.ct_fk_field.name: self.instance.pk,
            })
        super(BaseGenericInlineFormSet, self).__init__(
            queryset=qs, data=data, files=files,
            prefix=prefix,
            **kwargs
        )