101 lines
3.4 KiB
Python
101 lines
3.4 KiB
Python
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import datetime
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from django.core.validators import EMPTY_VALUES
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from django.forms import ValidationError
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from django.forms.fields import RegexField, Select
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from django.utils.translation import ugettext_lazy as _
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from mk_choices import MK_MUNICIPALITIES
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class MKIdentityCardNumberField(RegexField):
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"""
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A Macedonian ID card number. Accepts both old and new format.
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"""
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default_error_messages = {
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'invalid': _(u'Identity card numbers must contain'
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' either 4 to 7 digits or an uppercase letter and 7 digits.'),
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}
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def __init__(self, *args, **kwargs):
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kwargs['min_length'] = None
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kwargs['max_length'] = 8
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regex = ur'(^[A-Z]{1}\d{7}$)|(^\d{4,7}$)'
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super(MKIdentityCardNumberField, self).__init__(regex, *args, **kwargs)
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class MKMunicipalitySelect(Select):
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"""
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A form ``Select`` widget that uses a list of Macedonian municipalities as
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choices. The label is the name of the municipality and the value
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is a 2 character code for the municipality.
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"""
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def __init__(self, attrs=None):
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super(MKMunicipalitySelect, self).__init__(attrs, choices = MK_MUNICIPALITIES)
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class UMCNField(RegexField):
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"""
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A form field that validates input as a unique master citizen
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number.
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The format of the unique master citizen number has been kept the same from
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Yugoslavia. It is still in use in other countries as well, it is not applicable
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solely in Macedonia. For more information see:
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https://secure.wikimedia.org/wikipedia/en/wiki/Unique_Master_Citizen_Number
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A value will pass validation if it complies to the following rules:
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* Consists of exactly 13 digits
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* The first 7 digits represent a valid past date in the format DDMMYYY
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* The last digit of the UMCN passes a checksum test
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"""
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default_error_messages = {
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'invalid': _(u'This field should contain exactly 13 digits.'),
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'date': _(u'The first 7 digits of the UMCN must represent a valid past date.'),
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'checksum': _(u'The UMCN is not valid.'),
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}
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def __init__(self, *args, **kwargs):
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kwargs['min_length'] = None
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kwargs['max_length'] = 13
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super(UMCNField, self).__init__(r'^\d{13}$', *args, **kwargs)
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def clean(self, value):
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value = super(UMCNField, self).clean(value)
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if value in EMPTY_VALUES:
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return u''
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if not self._validate_date_part(value):
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raise ValidationError(self.error_messages['date'])
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if self._validate_checksum(value):
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return value
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else:
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raise ValidationError(self.error_messages['checksum'])
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def _validate_checksum(self, value):
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a,b,c,d,e,f,g,h,i,j,k,l,K = [int(digit) for digit in value]
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m = 11 - (( 7*(a+g) + 6*(b+h) + 5*(c+i) + 4*(d+j) + 3*(e+k) + 2*(f+l)) % 11)
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if (m >= 1 and m <= 9) and K == m:
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return True
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elif m == 11 and K == 0:
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return True
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else:
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return False
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def _validate_date_part(self, value):
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daypart, monthpart, yearpart = int(value[:2]), int(value[2:4]), int(value[4:7])
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if yearpart >= 800:
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yearpart += 1000
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else:
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yearpart += 2000
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try:
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date = datetime.datetime(year = yearpart, month = monthpart, day = daypart).date()
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except ValueError:
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return False
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if date >= datetime.datetime.now().date():
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return False
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return True
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