有条件地显示和隐藏表单字段并设置字段值 [英] Conditionally show and hide a form field and set the field value

问题描述

我的 Django 中有一个表单，看起来像这样:

I have a form in my Django that looks something like this:

class PersonnelForm(forms.Form):
    """
    Form for creating a new personnel.
    """
    username = forms.RegexField(
        required=True, max_length=30, label=_("Name")
    )
    is_manager = forms.BooleanField(
        required=True, label=_("Is Manager")
    )

我在我网站的两个地方使用了这个表格.其中一个地方，我想显示表单及其除 is_manager 字段之外的所有字段，但我想将此字段的默认值设置为 True.在另一个地方，我想显示表单及其所有字段，包括 is_manager 字段，我希望它的默认值为 False.

I use this form in two places in my site. One one of the places, I'd like to display the form and all of its fields except the is_manager field but I would like to set the default value of this field to True. In the other place, I'd like to display the form and all of its fields including the is_manager field and I would like it to have a default value of False.

我怎样才能做到这一点?似乎是一件小事，但我想不通.

How can I accomplish this? Seems to be a trivial thing but I can't figure it out.

谢谢.

推荐答案

您可以使用表单的 __init__ 方法来隐藏(或删除)该字段，即

You could use the form's __init__ method to hide (or delete) the field, i.e.

class PersonnelForm(forms.Form):
    """
    Form for creating a new personnel.
    """
    username = forms.RegexField(
        required=True, max_length=30, label=_("Name")
    )
    is_manager = forms.BooleanField(
        required=True, label=_("Is Manager")
    )

    def __init__(self, *args, **kwargs):
        delete_some_field = kwargs.get('delete_some_field', False)
        if 'delete_some_field' in kwargs:
            del kwargs['delete_some_field']
        super(PersonnelForm, self).__init__(*args, **kwargs)
        if delete_some_field:
            del self.fields['is_manager']
            # or
            self.fields['is_manager'].widget = something_else

#views.py
form = PersonnelForm(...., delete_some_field=True)

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