85 lines
2.9 KiB
Python
85 lines
2.9 KiB
Python
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"""
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Polish-specific form helpers
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"""
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from django.newforms import ValidationError
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from django.newforms.fields import Select, RegexField
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from django.utils.translation import ugettext as _
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class PLVoivodeshipSelect(Select):
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"""
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A select widget with list of Polish voivodeships (administrative provinces)
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as choices.
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"""
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def __init__(self, attrs=None):
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from pl_voivodeships import VOIVODESHIP_CHOICES
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super(PLVoivodeshipSelect, self).__init__(attrs, choices=VOIVODESHIP_CHOICES)
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class PLAdministrativeUnitSelect(Select):
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"""
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A select widget with list of Polish administrative units as choices.
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"""
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def __init__(self, attrs=None):
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from pl_administrativeunits import ADMINISTRATIVE_UNIT_CHOICES
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super(PLAdministrativeUnitSelect, self).__init__(attrs, choices=ADMINISTRATIVE_UNIT_CHOICES)
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class PLNationalIdentificationNumberField(RegexField):
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"""
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A form field that validates as Polish Identification Number (PESEL).
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Checks the following rules:
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* the length consist of 11 digits
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* has a valid checksum
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The algorithm is documented at http://en.wikipedia.org/wiki/PESEL.
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"""
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def has_valid_checksum(self, number):
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"""
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Calculates a checksum with the provided algorithm.
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"""
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multiple_table = (1, 3, 7, 9, 1, 3, 7, 9, 1, 3, 1)
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result = 0
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for i in range(len(number)):
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result += int(number[i])*multiple_table[i]
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if result % 10 == 0:
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return True
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else:
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return False
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def __init__(self, *args, **kwargs):
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super(PLNationalIdentificationNumberField, self).__init__(r'^\d{11}$',
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max_length=None, min_length=None, error_message=_(u'National Identification Number consists of 11 digits.'),
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*args, **kwargs)
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def clean(self,value):
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super(PLNationalIdentificationNumberField, self).clean(value)
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if not self.has_valid_checksum(value):
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raise ValidationError(_(u'Wrong checksum for the National Identification Number.'))
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return u'%s' % value
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class PLTaxNumberField(RegexField):
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"""
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A form field that validates as Polish Tax Number (NIP).
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Valid forms are: XXX-XXX-YY-YY or XX-XX-YYY-YYY.
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"""
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def __init__(self, *args, **kwargs):
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super(PLTaxNumberField, self).__init__(r'^\d{3}-\d{3}-\d{2}-\d{2}$|^\d{2}-\d{2}-\d{3}-\d{3}$',
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max_length=None, min_length=None,
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error_message=_(u'Enter a tax number field (NIP) in the format XXX-XXX-XX-XX or XX-XX-XXX-XXX.'), *args, **kwargs)
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class PLPostalCodeField(RegexField):
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"""
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A form field that validates as Polish postal code.
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Valid code is XX-XXX where X is digit.
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"""
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def __init__(self, *args, **kwargs):
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super(PLPostalCodeField, self).__init__(r'^\d{2}-\d{3}$',
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max_length=None, min_length=None,
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error_message=_(u'Enter a postal code in the format XX-XXX.'),
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*args, **kwargs)
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