2

我正在尝试基于动态创建其字段的 MultiValueField 创建自定义小部件。类似于以下内容:

class MyField(MultiValueField):
    def __init__(self, my_param, *args, **kwargs):
        fields = []
        for field in my_param.all():
            fields.append(forms.ChoiceField(
              widget=forms.Select(attrs={'class':'some_class'})))

    super(MyField, self).__init__(
        self, fields=tuple(fields), *args, **kwargs)

以及使用如下字段的表单:

class MyForm(forms.Form):
    multi_field = MyField()
    def __init__(self, *args, **kwargs):
        super(MyForm, self).__init__(*args, **kwargs)
        self.fields['multi_field'].my_param = self.initial['car_types'].another

我现在不知何故被困住了。当仅从 MyForm 的构造函数(例如 self.initial['car_types'].another)中知道参数时,如何将参数(例如 my_param)传递给 MyField 的init () 方法?

4

1 回答 1

3

您需要在内部实例化您的字段__init__

class MyForm(forms.Form):
    def __init__(self, *args, **kwargs):
        super(MyForm, self).__init__(*args, **kwargs)
        self.fields['multi_field'] = MyField(self.initial['car_types'].another)
于 2013-09-16T14:50:53.807 回答