author | Lennard de Rijk <ljvderijk@gmail.com> |
Fri, 10 Apr 2009 15:32:11 +0000 | |
changeset 2146 | 57c74ce47fa3 |
parent 323 | ff1a9aa48cfd |
permissions | -rw-r--r-- |
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""" |
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USA-specific Form helpers |
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""" |
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from django.forms import ValidationError |
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from django.forms.fields import Field, RegexField, Select, EMPTY_VALUES |
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from django.utils.encoding import smart_unicode |
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from django.utils.translation import ugettext_lazy as _ |
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import re |
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|
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phone_digits_re = re.compile(r'^(?:1-?)?(\d{3})[-\.]?(\d{3})[-\.]?(\d{4})$') |
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ssn_re = re.compile(r"^(?P<area>\d{3})[-\ ]?(?P<group>\d{2})[-\ ]?(?P<serial>\d{4})$") |
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|
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class USZipCodeField(RegexField): |
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default_error_messages = { |
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'invalid': _('Enter a zip code in the format XXXXX or XXXXX-XXXX.'), |
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} |
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def __init__(self, *args, **kwargs): |
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super(USZipCodeField, self).__init__(r'^\d{5}(?:-\d{4})?$', |
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max_length=None, min_length=None, *args, **kwargs) |
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|
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class USPhoneNumberField(Field): |
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default_error_messages = { |
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'invalid': u'Phone numbers must be in XXX-XXX-XXXX format.', |
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} |
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|
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def clean(self, value): |
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super(USPhoneNumberField, 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(self.error_messages['invalid']) |
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class USSocialSecurityNumberField(Field): |
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""" |
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A United States Social Security number. |
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Checks the following rules to determine whether the number is valid: |
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|
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* Conforms to the XXX-XX-XXXX format. |
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* No group consists entirely of zeroes. |
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* The leading group is not "666" (block "666" will never be allocated). |
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* The number is not in the promotional block 987-65-4320 through |
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987-65-4329, which are permanently invalid. |
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* The number is not one known to be invalid due to otherwise widespread |
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promotional use or distribution (e.g., the Woolworth's number or the |
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1962 promotional number). |
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""" |
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default_error_messages = { |
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'invalid': _('Enter a valid U.S. Social Security number in XXX-XX-XXXX format.'), |
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} |
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def clean(self, value): |
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super(USSocialSecurityNumberField, self).clean(value) |
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if value in EMPTY_VALUES: |
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return u'' |
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match = re.match(ssn_re, value) |
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if not match: |
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raise ValidationError(self.error_messages['invalid']) |
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area, group, serial = match.groupdict()['area'], match.groupdict()['group'], match.groupdict()['serial'] |
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65 |
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# First pass: no blocks of all zeroes. |
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if area == '000' or \ |
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group == '00' or \ |
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serial == '0000': |
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raise ValidationError(self.error_messages['invalid']) |
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|
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# Second pass: promotional and otherwise permanently invalid numbers. |
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if area == '666' or \ |
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(area == '987' and group == '65' and 4320 <= int(serial) <= 4329) or \ |
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value == '078-05-1120' or \ |
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value == '219-09-9999': |
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raise ValidationError(self.error_messages['invalid']) |
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return u'%s-%s-%s' % (area, group, serial) |
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|
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class USStateField(Field): |
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""" |
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A form field that validates its input is a U.S. state 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 state. |
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""" |
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default_error_messages = { |
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'invalid': u'Enter a U.S. state or territory.', |
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} |
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|
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def clean(self, value): |
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from us_states import STATES_NORMALIZED |
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super(USStateField, 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 STATES_NORMALIZED[value.strip().lower()].decode('ascii') |
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except KeyError: |
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pass |
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raise ValidationError(self.error_messages['invalid']) |
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|
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class USStateSelect(Select): |
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""" |
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A Select widget that uses a list of U.S. states/territories as its choices. |
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""" |
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def __init__(self, attrs=None): |
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from us_states import STATE_CHOICES |
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super(USStateSelect, self).__init__(attrs, choices=STATE_CHOICES) |