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Viewing changes to report_geraldo/lib/geraldo/site/newsite/site-geraldo/django/contrib/localflavor/za/forms.py

  • Committer: Cubic ERP
  • Date: 2014-01-07 15:38:09 UTC
  • Revision ID: info@cubicerp.com-20140107153809-4jmif3zoi8rcveve
[ADD] cubicReport

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report_geraldo/lib/geraldo/site/newsite/site-geraldo/django/contrib/localflavor/za/forms.py
 
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"""
 
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South Africa-specific Form helpers
 
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"""
 
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from django.forms import ValidationError
 
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from django.forms.fields import Field, RegexField, EMPTY_VALUES
 
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from django.utils.checksums import luhn
 
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from django.utils.translation import gettext as _
 
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import re
 
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from datetime import date
 
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id_re = re.compile(r'^(?P<yy>\d\d)(?P<mm>\d\d)(?P<dd>\d\d)(?P<mid>\d{4})(?P<end>\d{3})')
 
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class ZAIDField(Field):
 
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    """A form field for South African ID numbers -- the checksum is validated
 
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    using the Luhn checksum, and uses a simlistic (read: not entirely accurate)
 
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    check for the birthdate
 
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    """
 
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    default_error_messages = {
 
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        'invalid': _(u'Enter a valid South African ID number'),
 
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    }
 
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    def clean(self, value):
 
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        # strip spaces and dashes
 
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        value = value.strip().replace(' ', '').replace('-', '')
 
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        super(ZAIDField, self).clean(value)
 
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        if value in EMPTY_VALUES:
 
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            return u''
 
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        match = re.match(id_re, value)
 
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        if not match:
 
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            raise ValidationError(self.error_messages['invalid'])
 
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        g = match.groupdict()
 
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        try:
 
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            # The year 2000 is conveniently a leapyear.
 
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            # This algorithm will break in xx00 years which aren't leap years
 
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            # There is no way to guess the century of a ZA ID number
 
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            d = date(int(g['yy']) + 2000, int(g['mm']), int(g['dd']))
 
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        except ValueError:
 
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            raise ValidationError(self.error_messages['invalid'])
 
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        if not luhn(value):
 
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            raise ValidationError(self.error_messages['invalid'])
 
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        return value
 
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class ZAPostCodeField(RegexField):
 
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    default_error_messages = {
 
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        'invalid': _(u'Enter a valid South African postal code'),
 
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    }
 
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    def __init__(self, *args, **kwargs):
 
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        super(ZAPostCodeField, self).__init__(r'^\d{4}$',
 
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            max_length=None, min_length=None)