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git-svn-id: http://code.djangoproject.com/svn/django/trunk@6203 bcc190cf-cafb-0310-a4f2-bffc1f526a37
This commit is contained in:
Jacob Kaplan-Moss
parent
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"""
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An alphabetical list of provinces and territories for use as `choices`
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in a formfield., and a mapping of province misspellings/abbreviations to
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normalized abbreviations
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Source: http://www.canada.gc.ca/othergov/prov_e.html
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This exists in this standalone file so that it's only imported into memory
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when explicitly needed.
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"""
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PROVINCE_CHOICES = (
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('AB', 'Alberta'),
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('BC', 'British Columbia'),
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('MB', 'Manitoba'),
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('NB', 'New Brunswick'),
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('NF', 'Newfoundland and Labrador'),
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('NT', 'Northwest Territories'),
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('NS', 'Nova Scotia'),
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('NU', 'Nunavut'),
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('ON', 'Ontario'),
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('PE', 'Prince Edward Island'),
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('QC', 'Quebec'),
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('SK', 'Saskatchewan'),
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('YK', 'Yukon')
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)
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PROVINCES_NORMALIZED = {
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'ab': 'AB',
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'alberta': 'AB',
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'bc': 'BC',
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'b.c.': 'BC',
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'british columbia': 'BC',
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'mb': 'MB',
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'manitoba': 'MB',
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'nf': 'NF',
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'newfoundland': 'NF',
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'newfoundland and labrador': 'NF',
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'nt': 'NT',
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'northwest territories': 'NT',
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'ns': 'NS',
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'nova scotia': 'NS',
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'nu': 'NU',
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'nunavut': 'NU',
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'on': 'ON',
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'ontario': 'ON',
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'pe': 'PE',
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'pei': 'PE',
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'p.e.i.': 'PE',
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'prince edward island': 'PE',
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'qc': 'QC',
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'quebec': 'QC',
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'sk': 'SK',
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'saskatchewan': 'SK',
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'yk': 'YK',
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'yukon': 'YK',
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}
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@ -0,0 +1,112 @@
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"""
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Canada-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 Field, RegexField, Select, EMPTY_VALUES
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from django.newforms.util import smart_unicode
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from django.utils.translation import gettext, ugettext
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import re
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phone_digits_re = re.compile(r'^(?:1-?)?(\d{3})[-\.]?(\d{3})[-\.]?(\d{4})$')
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sin_re = re.compile(r"^(\d{3})-(\d{3})-(\d{3})$")
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class CAPostalCodeField(RegexField):
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"""Canadian postal code field."""
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def __init__(self, *args, **kwargs):
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super(CAPostalCodeField, self).__init__(r'^[ABCEGHJKLMNPRSTVXYZ]\d[A-Z] \d[A-Z]\d$',
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max_length=None, min_length=None,
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error_message=gettext(u'Enter a postal code in the format XXX XXX.'),
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*args, **kwargs)
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class CAPhoneNumberField(Field):
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"""Canadian phone number field."""
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def clean(self, value):
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"""Validate a phone number.
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"""
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super(CAPhoneNumberField, self).clean(value)
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if value in EMPTY_VALUES:
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return u''
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value = re.sub('(\(|\)|\s+)', '', smart_unicode(value))
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m = phone_digits_re.search(value)
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if m:
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return u'%s-%s-%s' % (m.group(1), m.group(2), m.group(3))
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raise ValidationError(u'Phone numbers must be in XXX-XXX-XXXX format.')
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class CAProvinceField(Field):
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"""
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A form field that validates its input is a Canadian province name or abbreviation.
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It normalizes the input to the standard two-leter postal service
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abbreviation for the given province.
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"""
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def clean(self, value):
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from ca_provinces import PROVINCES_NORMALIZED
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super(CAProvinceField, self).clean(value)
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if value in EMPTY_VALUES:
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return u''
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try:
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value = value.strip().lower()
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except AttributeError:
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pass
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else:
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try:
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return PROVINCES_NORMALIZED[value.strip().lower()].decode('ascii')
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except KeyError:
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pass
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raise ValidationError(u'Enter a Canadian province or territory.')
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class CAProvinceSelect(Select):
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"""
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A Select widget that uses a list of Canadian provinces and
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territories as its choices.
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"""
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def __init__(self, attrs=None):
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from ca_provinces import PROVINCE_CHOICES # relative import
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super(CAProvinceSelect, self).__init__(attrs, choices=PROVINCE_CHOICES)
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class CASocialInsuranceNumberField(Field):
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"""
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A Canadian Social Insurance Number (SIN).
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Checks the following rules to determine whether the number is valid:
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* Conforms to the XXX-XXX-XXXX format.
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* Passes the check digit process "Luhn Algorithm"
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See: http://en.wikipedia.org/wiki/Social_Insurance_Number
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"""
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def clean(self, value):
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super(CASocialInsuranceNumberField, self).clean(value)
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if value in EMPTY_VALUES:
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return u''
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msg = ugettext('Enter a valid Canadian Social Insurance number in XXX-XXX-XXXX format.')
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match = re.match(sin_re, value)
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if not match:
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raise ValidationError(msg)
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number = u'%s-%s-%s' % (match.group(1), match.group(2), match.group(3))
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check_number = u'%s%s%s' % (match.group(1), match.group(2), match.group(3))
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if not self.luhn_checksum_is_valid(check_number):
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raise ValidationError(msg)
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return number
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def luhn_checksum_is_valid(self, number):
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"""
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Checks to make sure that the SIN passes a luhn mod-10 checksum
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See: http://en.wikipedia.org/wiki/Luhn_algorithm
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"""
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sum = 0
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num_digits = len(number)
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oddeven = num_digits & 1
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for count in range(0, num_digits):
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digit = int(number[count])
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if not (( count & 1 ) ^ oddeven ):
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digit = digit * 2
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if digit > 9:
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digit = digit - 9
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sum = sum + digit
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return ( (sum % 10) == 0 )
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