带条件问题的Django表单向导 [英] Django Form Wizard with Conditional Questions

问题描述

在我的Django应用程序中，我目前有一个带有几个表单类的表单向导.我希望有条件的问题.这意味着，如果用户为某个问题选择是"，则表单中的另一个问题将变为必需，而javascript将使该问题可见.我找到了一个如何在线执行此操作的示例，但是它不起作用.关于如何创建此功能的任何建议?

In my Django application, I currently have a form wizard with a few form classes. I would like to have the ability to have conditional questions. Meaning if the user selects yes for a certain question, another question within the form will become required and javascript will make the question visible. I found an example of how to do this online, however it doesn't work. Any suggestions on how I can create this functionality?

class QuestionForm(forms.Form):

COOL_LIST = (
    ('cool','Cool'),
    ('really cool','Really Cool'),
)

YES, NO = 'yes','no'

YES_NO = (
    (YES,'Yes'),
    (NO,'No'),
)

are_you_cool = forms.ChoiceField(choices=YES_NO,label='Are you cool?')
how_cool = forms.MultipleChoiceField(required=False,widget=CheckboxSelectMultiple, choices=COOL_LIST,label='How cool are you?')

def __init__(self, data=None, *args, **kwargs):
    super(QuestionForm, self).__init__(data, *args, **kwargs)

    if data and data.get('are_you_cool', None) == self.YES:
        self.fields['how_cool'].required = True

推荐答案

尝试将表单的__init__方法替换为自定义的clean_are_you_cool方法.因此，如果用户提交值Yes，则应检查是否也填充了how_cool字段.您还应该在客户端执行此操作，以提供出色的用户体验.这样的形式:

Try to replace __init__ method of your form with custom clean_are_you_cool method. So, if user submit value Yes you should check if how_cool field is populated too. You also should do this on client side to provide great user experience. Something like this with forms:

def clean_are_you_cool(self):
    if self.cleaned_data.get('are_you_cool', None) == 'Yes':
        if self.cleaned_data.get('how_cool', None) is not None:
           #  Actions for cool user. 
           pass
    #  Or if user not cool.

这篇关于带条件问题的Django表单向导的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！