Django-1.2.1/django/contrib/localflavor/nl/forms.py

   1 """
   2 NL-specific Form helpers
   3 """
   4
   5 import re
   6
   7 from django.core.validators import EMPTY_VALUES
   8 from django.forms import ValidationError
   9 from django.forms.fields import Field, Select
  10 from django.utils.translation import ugettext_lazy as _
  11 from django.utils.encoding import smart_unicode
  12
  13 pc_re = re.compile('^\d{4}[A-Z]{2}$')
  14 sofi_re = re.compile('^\d{9}$')
  15 numeric_re = re.compile('^\d+$')
  16
  17 class NLZipCodeField(Field):
  18     """
  19     A Dutch postal code field.
  20     """
  21     default_error_messages = {
  22         'invalid': _('Enter a valid postal code'),
  23     }
  24
  25     def clean(self, value):
  26         super(NLZipCodeField, self).clean(value)
  27         if value in EMPTY_VALUES:
  28             return u''
  29
  30         value = value.strip().upper().replace(' ', '')
  31         if not pc_re.search(value):
  32             raise ValidationError(self.error_messages['invalid'])
  33
  34         if int(value[:4]) < 1000:
  35             raise ValidationError(self.error_messages['invalid'])
  36
  37         return u'%s %s' % (value[:4], value[4:])
  38
  39 class NLProvinceSelect(Select):
  40     """
  41     A Select widget that uses a list of provinces of the Netherlands as its
  42     choices.
  43     """
  44     def __init__(self, attrs=None):
  45         from nl_provinces import PROVINCE_CHOICES
  46         super(NLProvinceSelect, self).__init__(attrs, choices=PROVINCE_CHOICES)
  47
  48 class NLPhoneNumberField(Field):
  49     """
  50     A Dutch telephone number field.
  51     """
  52     default_error_messages = {
  53         'invalid': _('Enter a valid phone number'),
  54     }
  55
  56     def clean(self, value):
  57         super(NLPhoneNumberField, self).clean(value)
  58         if value in EMPTY_VALUES:
  59             return u''
  60
  61         phone_nr = re.sub('[\-\s\(\)]', '', smart_unicode(value))
  62
  63         if len(phone_nr) == 10 and numeric_re.search(phone_nr):
  64             return value
  65
  66         if phone_nr[:3] == '+31' and len(phone_nr) == 12 and \
  67            numeric_re.search(phone_nr[3:]):
  68             return value
  69
  70         raise ValidationError(self.error_messages['invalid'])
  71
  72 class NLSoFiNumberField(Field):
  73     """
  74     A Dutch social security number (SoFi/BSN) field.
  75
  76     http://nl.wikipedia.org/wiki/Sofinummer
  77     """
  78     default_error_messages = {
  79         'invalid': _('Enter a valid SoFi number'),
  80     }
  81
  82     def clean(self, value):
  83         super(NLSoFiNumberField, self).clean(value)
  84         if value in EMPTY_VALUES:
  85             return u''
  86
  87         if not sofi_re.search(value):
  88             raise ValidationError(self.error_messages['invalid'])
  89
  90         if int(value) == 0:
  91             raise ValidationError(self.error_messages['invalid'])
  92
  93         checksum = 0
  94         for i in range(9, 1, -1):
  95             checksum += int(value[9-i]) * i
  96         checksum -= int(value[-1])
  97
  98         if checksum % 11 != 0:
  99             raise ValidationError(self.error_messages['invalid'])
 100
 101         return value