如何在Forms.Form子类上动态设置models.ModelChoiceField的queryset

覆盖表单的

__init__

class FooForm(forms.Form):    bar = forms.ModelChoiceField(queryset=Bar.objects.none())    def __init__(self, *args, **kwargs):        qs = kwargs.pop('bars')        super(FooForm, self).__init__(*args, **kwargs)        self.fields['bar'].queryset = qs