有条件地显示和隐藏表单域并设置字段值 [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：

  class PersonnelForm（forms.Form）：
 
 
 $$
 username = forms.RegexField（
 required = True，max_length = 30，label = _（名称）
）
 is_manager = forms.BooleanField（
 required = True，label = _（Is Manager）
）
  

我在我的网站的两个地方使用这个表单。其中一个地方，我想显示窗体和所有的字段，除了 is_manager 字段，但我想将此字段的默认值设置为真。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$ code> False。

我该如何完成？似乎是一个微不足道的事情，但我无法理解。

谢谢。

解决方案

您可以使用表单的 __ init __ 方法隐藏（或删除）该字段，即

  class PersonnelForm（forms.Form）：

创建新人员的表单

 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）
如果kwargs中的'delete_some_field'：
 del kwargs ['delete_some_field'] 
 super（PersonnelForm，self）.__ init __（* args，** kwargs）
如果delete_some_field：
 del self.fields ['is_manager'] 
＃或
 self.fiel ds ['is_manager']。widget = something_else 
 
＃views.py 
 form = PersonnelForm（....，delete_some_field = True）
  

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")
    )

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.

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

Thanks.

解决方案

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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