"""
NL-specific Form helpers
"""
import re
from django.core.validators import EMPTY_VALUES
from django.forms import ValidationError
from django.forms.fields import Field,Select
from django.utils.translation import ugettext_lazy
from django.utils.encoding import smart_unicode
pc_re = re.compile('^\d{4}[A-Z]{2}$')
sofi_re = re.compile('^\d{9}$')
numeric_re = re.compile('^\d+$')
class NLZipCodeField(Field):
"""
A Dutch postal code field.
"""
default_error_messages = {
'invalid': _('Enter a valid postal code'),
}
def clean(self, value):
super(NLZipCodeField, self).clean(value)
if value in EMPTY_VALUES:
return u''
value = value.strip().upper().replace(' ', '')
if not pc_re.search(value):
raise ValidationError(self.error_messages['invalid'])
if int(value[:4]) < 1000:
raise ValidationError(self.error_messages['invalid'])
return u'%s %s' % (value[:4], value[4:])
class NLProvinceSelect(Select):
"""
A Select widget that uses a list of provinces of the Netherlands as its
choices.
"""
def __init__(self, attrs=None):
from nl_provinces import PROVINCE_CHOICES
super(NLProvinceSelect, self).__init__(attrs, choices=PROVINCE_CHOICES)
class NLPhoneNumberField(Field):
"""
A Dutch telephone number field.
"""
default_error_messages = {
'invalid': _('Enter a valid phone number'),
}
def clean(self, value):
super(NLPhoneNumberField, self).clean(value)
if value in EMPTY_VALUES:
return u''
phone_nr = re.sub('[\-\s\(\)]', '', smart_unicode(value))
if len(phone_nr) == 10 and numeric_re.search(phone_nr):
return value
if phone_nr[:3] == '+31' and len(phone_nr) == 12 and \
numeric_re.search(phone_nr[3:]):
return value
raise ValidationError(self.error_messages['invalid'])
class NLSoFiNumberField(Field):
"""
A Dutch social security number (SoFi/BSN) field.
http://nl.wikipedia.org/wiki/Sofinummer
"""
default_error_messages = {
'invalid': _('Enter a valid SoFi number'),
}
def clean(self, value):
super(NLSoFiNumberField, self).clean(value)
if value in EMPTY_VALUES:
return u''
if not sofi_re.search(value):
raise ValidationError(self.error_messages['invalid'])
if int(value) == 0:
raise ValidationError(self.error_messages['invalid'])
checksum = 0
for i in range(9, 1, -1):
checksum += int(value[9-i]) * i
checksum -= int(value[-1])
if checksum % 11 != 0:
raise ValidationError(self.error_messages['invalid'])
return value
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