django - 有条件地需要Django表单字段

Question

我想有一个字段，该字段是基于将boolean值设置为True或False所必需的。
如果将required =True设置为is_company，我应该返回什么来设置True？

class SignupFormExtra(SignupForm):
    is_company = fields.BooleanField(label=(u"Is company?"), 
                                     required=False)
    NIP = forms.PLNIPField(label=(u'NIP'), required=False)

    def clean(self):
        if self.cleaned_data.get('is_company', True):
            return ...?
        else:
            pass

Answer 1

查看文档中有关Cleaning and validating fields that depend on each other的章节。

文档中给出的示例可以轻松地适应您的方案:

def clean(self):
    cleaned_data = super(SignupFormExtra, self).clean()
    is_company = cleaned_data.get("is_company")
    nip = cleaned_data.get("NIP")
    if is_company and not nip:
        raise forms.ValidationError("NIP is a required field.")
    return cleaned_data