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set initial form form initial initial initial initial initial
原标题:set django form initial value to blank when the filed is required

在Django,我如何具体指明外地的缺省价值,以便选择其中之一。

class JobForm(forms.ModelForm):
    notification_email = 
    forms.ChoiceField(choices=[("a","a"),("b","b")],initial="--",required=True)

采用这种方法,但将“a”定为初步价值。

问题回答

Try to use TypedChoice Field。 它提供<条码>标准-价值<>。 论点:

notification_email = forms.TypedChoiceField(choices=[("a","a"),("b","b")], empty_value="--", required=True)

以下文为例,缺省显示值为-。 除非用户选择其中一种有效选择(ab),否则该表即没有提交。

class JobForm(forms.ModelForm):
    notification_email = forms.ChoiceField(
        choices=[
            (None, "--"),
            ("a","a"),
            ("b","b"),
        ],
        initial=None,
        required=True,
    )




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