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1 """ |
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2 Iceland specific form helpers. |
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3 """ |
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4 |
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5 from django.newforms import ValidationError |
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6 from django.newforms.fields import RegexField, EMPTY_VALUES |
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7 from django.newforms.widgets import Select |
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8 from django.utils.translation import ugettext |
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9 from django.utils.encoding import smart_unicode |
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10 |
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11 class ISIdNumberField(RegexField): |
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12 """ |
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13 Icelandic identification number (kennitala). This is a number every citizen |
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14 of Iceland has. |
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15 """ |
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16 default_error_messages = { |
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17 'invalid': ugettext('Enter a valid Icelandic identification number. The format is XXXXXX-XXXX.'), |
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18 'checksum': ugettext(u'The Icelandic identification number is not valid.'), |
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19 } |
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20 |
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21 def __init__(self, *args, **kwargs): |
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22 kwargs['min_length'],kwargs['max_length'] = 10,11 |
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23 super(ISIdNumberField, self).__init__(r'^\d{6}(-| )?\d{4}$', *args, **kwargs) |
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24 |
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25 def clean(self, value): |
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26 value = super(ISIdNumberField, self).clean(value) |
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27 |
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28 if value in EMPTY_VALUES: |
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29 return u'' |
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30 |
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31 value = self._canonify(value) |
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32 if self._validate(value): |
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33 return self._format(value) |
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34 else: |
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35 raise ValidationError(self.error_messages['checksum']) |
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36 |
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37 def _canonify(self, value): |
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38 """ |
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39 Returns the value as only digits. |
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40 """ |
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41 return value.replace('-', '').replace(' ', '') |
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42 |
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43 def _validate(self, value): |
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44 """ |
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45 Takes in the value in canonical form and checks the verifier digit. The |
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46 method is modulo 11. |
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47 """ |
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48 check = [3, 2, 7, 6, 5, 4, 3, 2, 1, 0] |
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49 return sum([int(value[i]) * check[i] for i in range(10)]) % 11 == 0 |
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50 |
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51 def _format(self, value): |
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52 """ |
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53 Takes in the value in canonical form and returns it in the common |
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54 display format. |
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55 """ |
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56 return smart_unicode(value[:6]+'-'+value[6:]) |
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57 |
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58 class ISPhoneNumberField(RegexField): |
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59 """ |
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60 Icelandic phone number. Seven digits with an optional hyphen or space after |
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61 the first three digits. |
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62 """ |
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63 def __init__(self, *args, **kwargs): |
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64 kwargs['min_length'], kwargs['max_length'] = 7,8 |
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65 super(ISPhoneNumberField, self).__init__(r'^\d{3}(-| )?\d{4}$', *args, **kwargs) |
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66 |
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67 def clean(self, value): |
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68 value = super(ISPhoneNumberField, self).clean(value) |
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69 |
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70 if value in EMPTY_VALUES: |
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71 return u'' |
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72 |
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73 return value.replace('-', '').replace(' ', '') |
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74 |
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75 class ISPostalCodeSelect(Select): |
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76 """ |
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77 A Select widget that uses a list of Icelandic postal codes as its choices. |
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78 """ |
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79 def __init__(self, attrs=None): |
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80 from is_postalcodes import IS_POSTALCODES |
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81 super(ISPostalCodeSelect, self).__init__(attrs, choices=IS_POSTALCODES) |
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82 |