需要有条件地使用Django表单字段

Question

我希望根据将布尔值设置为True或False来有条件地需要一个字段。

如果is_company设置为True，我应该返回set required = 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

查看文档中的Cleaning and validating fields that depend on each other章节。

文档中给出的示例可以很容易地适应您的场景：

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