如何使用 modelform 和 multiwidget

Question

这一切都是新手！我正在努力在前端显示显示为 (xxx)xxx-xxxx 的电话字段。下面是我的代码。我的问题是 1. 所有字段都是强制性的，由于某种原因，手机的行为不符合预期。即使将其留空，也不会抱怨 2.我如何测试此小部件的功能

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

        def decompress(self, value):
            if value:
                val = value.split('-')
                return [val[0],val[1],val[2]]
            return [None,None,None]

        def compress(self, data_list):
            if data_list[0] and data_list[1] and data_list[2]:
                ph1 = self.check_value(data_list[0])
                ph2 = self.check_value(data_list[1])
                ph3 = self.check_value(data_list[2])
                return '%s''%s''%s' %(ph1,ph2,ph3)
            else:
                return None

        def check_value(self,val):
            try:
                if val.isdigit():
                    return val
            except:
                raise forms.ValidationError('This Field has to be a number!')

        def clean(self, value):
            try:
                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))
            except:
                raise ValidationError('Phone Number is required.')

        def value_from_datadict(self,data,files,name):
            val_list = [widget.value_from_datadict(data,files,name+'_%s' %i) for i,widget in enumerate(self.widgets)]
            try:
                return val_list
            except ValueError:
                return ''

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

    class CustomerForm(ModelForm):
    phone = forms.CharField(required=True,widget=USPhoneNumberWidget())
       class Meta:
            model = Customer
            fields = ('fname','lname','address1','address2','city','state','zipcode','phone')

在模型中，空白和 null 不是 true。 任何意见都非常感谢。谢谢

Answer 1

这是电话字段：

phone = forms.CharField(label = 'Phone',widget=USPhoneNumberWidget() 
class USPhoneNumberWidget(forms.MultiWidget):
        """
        A widget that splits phone number into areacode/next3/last4 with textinput.
        """
        def __init__(self,attrs=None):
        widgets = (forms.TextInput(attrs={'size':'3','maxlength':'3'}),forms.TextInput(attrs={'size':'3','maxlength':'3'}),forms.TextInput(attrs={'size':'4','maxlength':'4'}))
        super(USPhoneNumberWidget,self).__init__(widgets,attrs=attrs)

    def decompress(self, value):
        if value:
            val = value
            return val[:3],val[3:6],val[6:]
        return None,None,None

    def compress(self, data_list):
        if data_list[0] and data_list[1] and data_list[2]:
            return '%s''%s''%s' %(data_list[0],data_list[1],data_list[2])
        else:
            return None

    def value_from_datadict(self,data,files,name):
        val_list = [widget.value_from_datadict(data,files,name+'_%s' %i) for i,widget in enumerate(self.widgets)]
        if val_list:
            return '%s''%s''%s' %(val_list[0],val_list[1],val_list[2])

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

但根据您在数据库中存储电话#的方式，“返回”行将被更改。在这里，我接受它为 (xxx)-xxx-xxxx 格式。在压缩中，它按顺序接收 ph_0(areacode)、ph_1(next 3)、ph_2(last4)。但我将其存储为 xxxxxxxxxx。

Firebug 帮助我更好地理解返回值应该是什么。当我知道如何进行测试时，我会更新答案。