A custom field and widget to provide month and year entry as for a credit card expiration date.

monthyearfield.py

from django import forms


import datetime


class MonthYearWidget(forms.MultiWidget):
    """
    A widget that splits a date into Month/Year with selects.
    """
    def __init__(self, attrs=None):
        months = (
            ('01', 'Jan (01)'),
            ('02', 'Feb (02)'),
            ('03', 'Mar (03)'),
            ('04', 'Apr (04)'),
            ('05', 'May (05)'),
            ('06', 'Jun (06)'),
            ('07', 'Jul (07)'),
            ('08', 'Aug (08)'),
            ('09', 'Sep (09)'),
            ('10', 'Oct (10)'),
            ('11', 'Nov (11)'),
            ('12', 'Dec (12)'),
            )


    year = int(datetime.date.today().year)
        year_digits = range(year, year+10)
        years = [(year, year) for year in year_digits]


    widgets = (forms.Select(attrs=attrs, choices=months), forms.Select(attrs=attrs, choices=years))
        super(MonthYearWidget, self).__init__(widgets, attrs)
    
    def decompress(self, value):
        if value:
            return [value.month, value.year]
        return [None, None]


    def render(self, name, value, attrs=None):
        try:
            value = datetime.date(month=int(value[0]), year=int(value[1]), day=1)
        except:
            value = ''
            
        return super(MonthYearWidget, self).render(name, value, attrs)


class MonthYearField(forms.MultiValueField):
    def compress(self, data_list):
        if data_list:
            return datetime.date(year=int(data_list[1]), month=int(data_list[0]), day=1)
        return datetime.date.today()