Django MultiWidget 电话号码字段 [英] Django MultiWidget Phone Number Field

问题描述

我想为电话号码输入创建一个字段，该字段具有 2 个文本字段(分别为 3、3 和 4 号)，并使用常见的(")"-"分隔符.下面是我的字段和小部件代码，在初始渲染期间尝试迭代表单中的字段时出现以下错误(当 for 循环到达我的电话号码字段时会发生这种情况):

I want to create a field for phone number input that has 2 text fields (size 3, 3, and 4 respectively) with the common "(" ")" "-" delimiters. Below is my code for the field and the widget, I'm getting the following error when trying to iterate the fields in my form during initial rendering (it happens when the for loop gets to my phone number field):

渲染时捕获异常:'NoneType' 对象不可订阅

Caught an exception while rendering: 'NoneType' object is unsubscriptable

class PhoneNumberWidget(forms.MultiWidget):
    def __init__(self,attrs=None):
        wigs = (forms.TextInput(attrs={'size':'3','maxlength':'3'}),
                forms.TextInput(attrs={'size':'3','maxlength':'3'}),
                forms.TextInput(attrs={'size':'4','maxlength':'4'}))
        super(PhoneNumberWidget, self).__init__(wigs, attrs)

    def decompress(self, value):
        return value or None

    def format_output(self, rendered_widgets):
        return '('+rendered_widgets[0]+')'+rendered_widgets[1]+'-'+rendered_widgets[2]

class PhoneNumberField(forms.MultiValueField):
    widget = PhoneNumberWidget
    def __init__(self, *args, **kwargs):
        fields=(forms.CharField(max_length=3), forms.CharField(max_length=3), forms.CharField(max_length=4))
        super(PhoneNumberField, self).__init__(fields, *args, **kwargs)
    def compress(self, data_list):
        if data_list[0] in fields.EMPTY_VALUES or data_list[1] in fields.EMPTY_VALUES or data_list[2] in fields.EMPTY_VALUES:
            raise fields.ValidateError(u'Enter valid phone number')
        return data_list[0]+data_list[1]+data_list[2]

class AdvertiserSumbissionForm(ModelForm):
    business_phone_number = PhoneNumberField(required=True)

推荐答案

我接受了 Hughdbrown 的建议并修改了 USPhoneNumberField 来满足我的需求.我最初没有使用它的原因是它在数据库中将电话号码存储为 XXX-XXX-XXXX，我将它们存储为 XXXXXXXXXX.所以我过度使用了干净的方法:

I took hughdbrown's advise and modified USPhoneNumberField to do what I need. The reason I didn't use it initially was that it stores phone numbers as XXX-XXX-XXXX in the DB, I store them as XXXXXXXXXX. So I over-rode the clean method:

class PhoneNumberField(USPhoneNumberField):
    def clean(self, value):
        super(USPhoneNumberField, self).clean(value)
        if value in EMPTY_VALUES:
            return u''
        value = re.sub('((|)|s+)', '', smart_unicode(value))
        m = phone_digits_re.search(value)
        if m:
            return u'%s%s%s' % (m.group(1), m.group(2), m.group(3))
        raise ValidationError(self.error_messages['invalid'])

这篇关于Django MultiWidget 电话号码字段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！