forms.py :  » Content-Management-Systems » PyLucid » PyLucid_standalone » django » contrib » localflavor » kw » Python Open Source

Home
Python Open Source
1.3.1.2 Python
2.Ajax
3.Aspect Oriented
4.Blog
5.Build
6.Business Application
7.Chart Report
8.Content Management Systems
9.Cryptographic
10.Database
11.Development
12.Editor
13.Email
14.ERP
15.Game 2D 3D
16.GIS
17.GUI
18.IDE
19.Installer
20.IRC
21.Issue Tracker
22.Language Interface
23.Log
24.Math
25.Media Sound Audio
26.Mobile
27.Network
28.Parser
29.PDF
30.Project Management
31.RSS
32.Search
33.Security
34.Template Engines
35.Test
36.UML
37.USB Serial
38.Web Frameworks
39.Web Server
40.Web Services
41.Web Unit
42.Wiki
43.Windows
44.XML
Python Open Source » Content Management Systems » PyLucid 
PyLucid » PyLucid_standalone » django » contrib » localflavor » kw » forms.py
"""
Kuwait-specific Form helpers
"""
import re
from datetime import date

from django.core.validators import EMPTY_VALUES
from django.forms import ValidationError
from django.forms.fields import Field,RegexField
from django.utils.translation import gettext

id_re = re.compile(r'^(?P<initial>\d{1})(?P<yy>\d\d)(?P<mm>\d\d)(?P<dd>\d\d)(?P<mid>\d{4})(?P<checksum>\d{1})')

class KWCivilIDNumberField(Field):
    """
    Kuwaiti Civil ID numbers are 12 digits, second to seventh digits
    represents the person's birthdate.

    Checks the following rules to determine the validty of the number:
        * The number consist of 12 digits.
        * The birthdate of the person is a valid date.
        * The calculated checksum equals to the last digit of the Civil ID.
    """
    default_error_messages = {
        'invalid': _('Enter a valid Kuwaiti Civil ID number'),
    }

    def has_valid_checksum(self, value):
        weight = (2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2)
        calculated_checksum = 0
        for i in range(11):
            calculated_checksum += int(value[i]) * weight[i]

        remainder = calculated_checksum % 11
        checkdigit = 11 - remainder
        if checkdigit != int(value[11]):
            return False
        return True

    def clean(self, value):
        super(KWCivilIDNumberField, self).clean(value)
        if value in EMPTY_VALUES:
            return u''

        if not re.match(r'^\d{12}$', value):
            raise ValidationError(self.error_messages['invalid'])

        match = re.match(id_re, value)

        if not match:
            raise ValidationError(self.error_messages['invalid'])

        gd = match.groupdict()

        try:
            d = date(int(gd['yy']), int(gd['mm']), int(gd['dd']))
        except ValueError:
            raise ValidationError(self.error_messages['invalid'])

        if not self.has_valid_checksum(value):
            raise ValidationError(self.error_messages['invalid'])

        return value
www.java2java.com | Contact Us
Copyright 2009 - 12 Demo Source and Support. All rights reserved.
All other trademarks are property of their respective owners.