author | Lennard de Rijk <ljvderijk@gmail.com> |
Tue, 07 Apr 2009 22:20:23 +0000 | |
changeset 2125 | c24e8423cd1a |
parent 323 | ff1a9aa48cfd |
permissions | -rw-r--r-- |
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""" |
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Polish-specific form helpers |
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""" |
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import re |
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from django.forms import ValidationError |
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from django.forms.fields import Select, RegexField |
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from django.utils.translation import ugettext_lazy as _ |
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class PLProvinceSelect(Select): |
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""" |
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A select widget with list of Polish administrative provinces 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(PLProvinceSelect, self).__init__(attrs, choices=VOIVODESHIP_CHOICES) |
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class PLCountySelect(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(PLCountySelect, self).__init__(attrs, choices=ADMINISTRATIVE_UNIT_CHOICES) |
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class PLPESELField(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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default_error_messages = { |
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'invalid': _(u'National Identification Number consists of 11 digits.'), |
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'checksum': _(u'Wrong checksum for the National Identification Number.'), |
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} |
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def __init__(self, *args, **kwargs): |
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super(PLPESELField, self).__init__(r'^\d{11}$', |
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max_length=None, min_length=None, *args, **kwargs) |
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def clean(self,value): |
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super(PLPESELField, self).clean(value) |
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if not self.has_valid_checksum(value): |
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raise ValidationError(self.error_messages['checksum']) |
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return u'%s' % value |
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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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return result % 10 == 0 |
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class PLNIPField(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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Checksum algorithm based on documentation at |
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http://wipos.p.lodz.pl/zylla/ut/nip-rego.html |
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""" |
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default_error_messages = { |
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'invalid': _(u'Enter a tax number field (NIP) in the format XXX-XXX-XX-XX or XX-XX-XXX-XXX.'), |
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'checksum': _(u'Wrong checksum for the Tax Number (NIP).'), |
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} |
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def __init__(self, *args, **kwargs): |
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super(PLNIPField, 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, *args, **kwargs) |
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|
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def clean(self,value): |
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super(PLNIPField, self).clean(value) |
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value = re.sub("[-]", "", value) |
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if not self.has_valid_checksum(value): |
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raise ValidationError(self.error_messages['checksum']) |
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return u'%s' % value |
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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 = (6, 5, 7, 2, 3, 4, 5, 6, 7) |
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result = 0 |
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for i in range(len(number)-1): |
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result += int(number[i]) * multiple_table[i] |
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|
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result %= 11 |
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if result == int(number[-1]): |
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return True |
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else: |
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return False |
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class PLREGONField(RegexField): |
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""" |
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A form field that validated as Polish National Official Business Register |
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Number (REGON). Valid numbers contain 7 or 9 digits. |
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More on the field: http://www.stat.gov.pl/bip/regon_ENG_HTML.htm |
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The checksum algorithm is documented at http://wipos.p.lodz.pl/zylla/ut/nip-rego.html |
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""" |
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default_error_messages = { |
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'invalid': _(u'National Business Register Number (REGON) consists of 7 or 9 digits.'), |
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'checksum': _(u'Wrong checksum for the National Business Register Number (REGON).'), |
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113 |
} |
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114 |
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115 |
def __init__(self, *args, **kwargs): |
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super(PLREGONField, self).__init__(r'^\d{7,9}$', |
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max_length=None, min_length=None, *args, **kwargs) |
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118 |
|
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def clean(self,value): |
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super(PLREGONField, self).clean(value) |
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if not self.has_valid_checksum(value): |
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raise ValidationError(self.error_messages['checksum']) |
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return u'%s' % value |
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124 |
|
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125 |
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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128 |
""" |
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multiple_table_7 = (2, 3, 4, 5, 6, 7) |
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multiple_table_9 = (8, 9, 2, 3, 4, 5, 6, 7) |
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131 |
result = 0 |
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132 |
|
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133 |
if len(number) == 7: |
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multiple_table = multiple_table_7 |
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135 |
else: |
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multiple_table = multiple_table_9 |
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137 |
|
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138 |
for i in range(len(number)-1): |
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result += int(number[i]) * multiple_table[i] |
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140 |
|
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result %= 11 |
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142 |
if result == 10: |
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143 |
result = 0 |
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144 |
if result == int(number[-1]): |
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145 |
return True |
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146 |
else: |
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147 |
return False |
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148 |
|
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149 |
class PLPostalCodeField(RegexField): |
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150 |
""" |
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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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153 |
""" |
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default_error_messages = { |
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'invalid': _(u'Enter a postal code in the format XX-XXX.'), |
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156 |
} |
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157 |
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158 |
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, *args, **kwargs) |