"""
AT-specific Form helpers
"""
import re
from django.utils.translation import ugettext_lazy
from django.forms.fields import Field,RegexField,Select
from django.forms import ValidationError
re_ssn = re.compile(r'^\d{4} \d{6}')
class ATZipCodeField(RegexField):
"""
A form field that validates its input is an Austrian postcode.
Accepts 4 digits.
"""
default_error_messages = {
'invalid': _('Enter a zip code in the format XXXX.'),
}
def __init__(self, *args, **kwargs):
super(ATZipCodeField, self).__init__(r'^\d{4}$',
max_length=None, min_length=None, *args, **kwargs)
class ATStateSelect(Select):
"""
A Select widget that uses a list of AT states as its choices.
"""
def __init__(self, attrs=None):
from django.contrib.localflavor.at.at_states import STATE_CHOICES
super(ATStateSelect, self).__init__(attrs, choices=STATE_CHOICES)
class ATSocialSecurityNumberField(Field):
"""
Austrian Social Security numbers are composed of a 4 digits and 6 digits
field. The latter represents in most cases the person's birthdate while
the first 4 digits represent a 3-digits counter and a one-digit checksum.
The 6-digits field can also differ from the person's birthdate if the
3-digits counter suffered an overflow.
This code is based on information available on
http://de.wikipedia.org/wiki/Sozialversicherungsnummer#.C3.96sterreich
"""
default_error_messages = {
'invalid': _(u'Enter a valid Austrian Social Security Number in XXXX XXXXXX format.'),
}
def clean(self, value):
if not re_ssn.search(value):
raise ValidationError(self.error_messages['invalid'])
sqnr, date = value.split(" ")
sqnr, check = (sqnr[:3], (sqnr[3]))
if int(sqnr) < 100:
raise ValidationError(self.error_messages['invalid'])
res = int(sqnr[0])*3 + int(sqnr[1])*7 + int(sqnr[2])*9 \
+ int(date[0])*5 + int(date[1])*8 + int(date[2])*4 \
+ int(date[3])*2 + int(date[4])*1 + int(date[5])*6
res = res % 11
if res != int(check):
raise ValidationError(self.error_messages['invalid'])
return u'%s%s %s'%(sqnr, check, date,)
|