| """ |
| IT-specific Form helpers |
| """ |
| |
| from django.core.validators import EMPTY_VALUES |
| from django.forms import ValidationError |
| from django.forms.fields import Field, RegexField, Select |
| from django.utils.translation import ugettext_lazy as _ |
| from django.utils.encoding import smart_unicode |
| from django.contrib.localflavor.it.util import ssn_check_digit, vat_number_check_digit |
| import re |
| |
| class ITZipCodeField(RegexField): |
| default_error_messages = { |
| 'invalid': _('Enter a valid zip code.'), |
| } |
| def __init__(self, *args, **kwargs): |
| super(ITZipCodeField, self).__init__(r'^\d{5}$', |
| max_length=None, min_length=None, *args, **kwargs) |
| |
| class ITRegionSelect(Select): |
| """ |
| A Select widget that uses a list of IT regions as its choices. |
| """ |
| def __init__(self, attrs=None): |
| from it_region import REGION_CHOICES |
| super(ITRegionSelect, self).__init__(attrs, choices=REGION_CHOICES) |
| |
| class ITProvinceSelect(Select): |
| """ |
| A Select widget that uses a list of IT provinces as its choices. |
| """ |
| def __init__(self, attrs=None): |
| from it_province import PROVINCE_CHOICES |
| super(ITProvinceSelect, self).__init__(attrs, choices=PROVINCE_CHOICES) |
| |
| class ITSocialSecurityNumberField(RegexField): |
| """ |
| A form field that validates Italian Social Security numbers (codice fiscale). |
| For reference see http://www.agenziaentrate.it/ and search for |
| 'Informazioni sulla codificazione delle persone fisiche'. |
| """ |
| default_error_messages = { |
| 'invalid': _(u'Enter a valid Social Security number.'), |
| } |
| |
| def __init__(self, *args, **kwargs): |
| super(ITSocialSecurityNumberField, self).__init__(r'^\w{3}\s*\w{3}\s*\w{5}\s*\w{5}$', |
| max_length=None, min_length=None, *args, **kwargs) |
| |
| def clean(self, value): |
| value = super(ITSocialSecurityNumberField, self).clean(value) |
| if value in EMPTY_VALUES: |
| return u'' |
| value = re.sub('\s', u'', value).upper() |
| try: |
| check_digit = ssn_check_digit(value) |
| except ValueError: |
| raise ValidationError(self.error_messages['invalid']) |
| if not value[15] == check_digit: |
| raise ValidationError(self.error_messages['invalid']) |
| return value |
| |
| class ITVatNumberField(Field): |
| """ |
| A form field that validates Italian VAT numbers (partita IVA). |
| """ |
| default_error_messages = { |
| 'invalid': _(u'Enter a valid VAT number.'), |
| } |
| |
| def clean(self, value): |
| value = super(ITVatNumberField, self).clean(value) |
| if value in EMPTY_VALUES: |
| return u'' |
| try: |
| vat_number = int(value) |
| except ValueError: |
| raise ValidationError(self.error_messages['invalid']) |
| vat_number = str(vat_number).zfill(11) |
| check_digit = vat_number_check_digit(vat_number[0:10]) |
| if not vat_number[10] == check_digit: |
| raise ValidationError(self.error_messages['invalid']) |
| return smart_unicode(vat_number) |