phonenumbermultifield.py

class PhoneNumberMultiWidget(forms.MultiWidget):
    def __init__(self, attrs=None):
        self.widgets = (
            forms.TextInput(attrs={'size': 3, 'maxlength': 3, 'class': 'areacode'}),
            forms.TextInput(attrs={'size': 3, 'maxlength': 3, 'class': 'exchange'}),
            forms.TextInput(attrs={'size': 4, 'maxlength': 4, 'class': 'lastfour'})
        )
        super(PhoneNumberMultiWidget, self).__init__(self.widgets, attrs)
    
    def format_output(self, rendered_widgets):
        return u'<div class="phone-number">%s</div>' % u'<span class="separator">&mdash;</span>'.join(rendered_widgets)
    
    def decompress(self, data_list):
        return [None, None, None]

class PhoneNumberHiddenMultiWidget(PhoneNumberMultiWidget):
    def __init__(self, attrs=None):
        self.widgets = (forms.HiddenInput(), forms.HiddenInput(), 
            forms.HiddenInput())
        super(PhoneNumberMultiWidget, self).__init__(self.widgets, attrs)
    
    def format_output(self, rendered_widgets):
        return ''.join(rendered_widgets)

class PhoneNumberMultiField(forms.MultiValueField):
    widget = PhoneNumberMultiWidget
    hidden_widget = PhoneNumberHiddenMultiWidget
    
    def __init__(self, *args, **kwargs):
        self.fields = (
            forms.RegexField(r'^(\d+)$', required=True, max_length=3, min_length=3),
            forms.RegexField(r'^(\d+)$', required=True, max_length=3, min_length=3),
            forms.RegexField(r'^(\d+)$', required=True, max_length=4, min_length=4),
        )
        super(PhoneNumberMultiField, self).__init__(self.fields, *args, **kwargs)
    
    def compress(self, data_list):
        return u'-'.join(data_list)