| """ |
| Iceland specific form helpers. |
| """ |
| |
| from django.forms import ValidationError |
| from django.forms.fields import RegexField, EMPTY_VALUES |
| from django.forms.widgets import Select |
| from django.utils.translation import ugettext_lazy as _ |
| from django.utils.encoding import smart_unicode |
| |
| class ISIdNumberField(RegexField): |
| """ |
| Icelandic identification number (kennitala). This is a number every citizen |
| of Iceland has. |
| """ |
| default_error_messages = { |
| 'invalid': _('Enter a valid Icelandic identification number. The format is XXXXXX-XXXX.'), |
| 'checksum': _(u'The Icelandic identification number is not valid.'), |
| } |
| |
| def __init__(self, *args, **kwargs): |
| kwargs['min_length'],kwargs['max_length'] = 10,11 |
| super(ISIdNumberField, self).__init__(r'^\d{6}(-| )?\d{4}$', *args, **kwargs) |
| |
| def clean(self, value): |
| value = super(ISIdNumberField, self).clean(value) |
| |
| if value in EMPTY_VALUES: |
| return u'' |
| |
| value = self._canonify(value) |
| if self._validate(value): |
| return self._format(value) |
| else: |
| raise ValidationError(self.error_messages['checksum']) |
| |
| def _canonify(self, value): |
| """ |
| Returns the value as only digits. |
| """ |
| return value.replace('-', '').replace(' ', '') |
| |
| def _validate(self, value): |
| """ |
| Takes in the value in canonical form and checks the verifier digit. The |
| method is modulo 11. |
| """ |
| check = [3, 2, 7, 6, 5, 4, 3, 2, 1, 0] |
| return sum([int(value[i]) * check[i] for i in range(10)]) % 11 == 0 |
| |
| def _format(self, value): |
| """ |
| Takes in the value in canonical form and returns it in the common |
| display format. |
| """ |
| return smart_unicode(value[:6]+'-'+value[6:]) |
| |
| class ISPhoneNumberField(RegexField): |
| """ |
| Icelandic phone number. Seven digits with an optional hyphen or space after |
| the first three digits. |
| """ |
| def __init__(self, *args, **kwargs): |
| kwargs['min_length'], kwargs['max_length'] = 7,8 |
| super(ISPhoneNumberField, self).__init__(r'^\d{3}(-| )?\d{4}$', *args, **kwargs) |
| |
| def clean(self, value): |
| value = super(ISPhoneNumberField, self).clean(value) |
| |
| if value in EMPTY_VALUES: |
| return u'' |
| |
| return value.replace('-', '').replace(' ', '') |
| |
| class ISPostalCodeSelect(Select): |
| """ |
| A Select widget that uses a list of Icelandic postal codes as its choices. |
| """ |
| def __init__(self, attrs=None): |
| from is_postalcodes import IS_POSTALCODES |
| super(ISPostalCodeSelect, self).__init__(attrs, choices=IS_POSTALCODES) |
| |