Ticket #3866: more_it_fields.diff

django/contrib/localflavor/it/util.py

@@ +1 @@
+from django.utils.translation import gettext
+
+FISCAL_CODE_EVEN_CHARS = {
+    '0': 0, '1': 1, '2': 2, '3': 3, '4': 4, '5': 5, '6': 6, '7': 7, '8': 8, '9': 9,
+    'A': 0, 'B': 1, 'C': 2, 'D': 3, 'E': 4, 'F': 5, 'G': 6, 'H': 7, 'I': 8, 'J': 9,
+    'K': 10, 'L': 11, 'M': 12, 'N': 13, 'O': 14, 'P': 15, 'Q': 16, 'R': 17, 'S': 18,
+    'T': 19, 'U': 20, 'V': 21, 'W': 22, 'X': 23, 'Y': 24, 'Z': 25
+}
+FISCAL_CODE_ODD_CHARS = {
+    '0': 1, '1': 0, '2': 5, '3': 7, '4': 9, '5': 13, '6': 15, '7': 17, '8': 19, '9': 21,
+    'A': 1, 'B': 0, 'C': 5, 'D': 7, 'E': 9, 'F': 13, 'G': 15, 'H': 17, 'I': 19, 'J': 21,
+    'K': 2, 'L': 4, 'M': 18, 'N': 20, 'O': 11, 'P': 3, 'Q': 6, 'R': 8, 'S': 12,
+    'T': 14, 'U': 16, 'V': 10, 'W': 22, 'X': 25, 'Y': 24, 'Z': 23
+}
+# Chars from 'A' to 'Z'
+FISCAL_CODE_CHECK_DIGITS = [chr(x) for x in range(65, 91)]
+
+
+def fiscal_code_check_digit(fiscal_code):
+    """ Calculate italian fiscal code check digit. """
+    code = fiscal_code.upper()
+    total = 0
+    for i in range(0,15):
+        try:
+            if i % 2 == 0:
+                total += FISCAL_CODE_ODD_CHARS[code[i]]
+            else:
+                total += FISCAL_CODE_EVEN_CHARS[code[i]]
+        except KeyError:
+            msg = gettext(u" Character '%(char)s' is not allowed.") % {'char': code[i]}
+            raise ValueError(msg)
+    return FISCAL_CODE_CHECK_DIGITS[total % 26]
+
+def vat_number_check_digit(vat_number):
+    """ Calculate italian vat number check digit. """
+    normalized_vat_number = str(vat_number).zfill(10)
+    total = 0
+    for i in range(0, 10, 2):
+        total += int(normalized_vat_number[i])
+    for i in range(1, 11, 2):
+        quotient , remainder = divmod(int(normalized_vat_number[i]) * 2, 10)
+        total += quotient + remainder
+    return str((10 - total % 10) % 10)

django/contrib/localflavor/it/forms.py

@@ -5 +5 @@
 from django.newforms import ValidationError
 from django.newforms.fields import Field, RegexField, Select, EMPTY_VALUES
 from django.utils.translation import gettext
+from django.utils.encoding import smart_unicode
+from django.contrib.localflavor.it.util import fiscal_code_check_digit, vat_number_check_digit
 import re
 
 class ITZipCodeField(RegexField):
@@ -29 +31 @@
     def __init__(self, attrs=None):
         from it_province import PROVINCE_CHOICES # relative import
         super(ITProvinceSelect, self).__init__(attrs, choices=PROVINCE_CHOICES)
+
+class ITFiscalCodeField(Field):
+    """
+    A form field  that validates it's input in Italian fiscal code.
+    """
+    def clean(self, value):
+        super(ITFiscalCodeField, self).clean(value)
+        if value in EMPTY_VALUES:
+            return u''
+        err_msg = gettext(u'Enter a valid fiscal code.')
+        fiscal_code = value.upper()
+        fiscal_code = fiscal_code.replace(' ', '')
+        fiscal_code = fiscal_code.replace('-', '')
+        if not len(fiscal_code) == 16:
+            raise ValidationError(err_msg)
+        try:
+            check_digit = fiscal_code_check_digit(fiscal_code)
+        except ValueError:
+            raise ValidationError(err_msg)
+        if not fiscal_code[15] == check_digit:
+            raise ValidationError(err_msg)
+        return smart_unicode(fiscal_code)
+
+class ITVatNumberField(Field):
+    """
+    A form field  that validates it's input in Italian VAT number.
+    """
+    def clean(self, value):
+        super(ITVatNumberField, self).clean(value)
+        if value in EMPTY_VALUES:
+            return u''
+        err_msg = gettext(u'Enter a valid VAT number.')
+        try:
+            vat_number = int(value)
+        except ValueError:
+            raise ValidationError(err_msg)
+        vat_number = str(vat_number).zfill(11)
+        check_digit = vat_number_check_digit(vat_number[0:10])
+        if not vat_number[10] == check_digit:
+            raise ValidationError(err_msg)
+        return smart_unicode(vat_number)

tests/regressiontests/forms/localflavor.py

@@ -642 +642 @@
 >>> w.render('regions', 'PMN')
 u'<select name="regions">\n<option value="ABR">Abruzzo</option>\n<option value="BAS">Basilicata</option>\n<option value="CAL">Calabria</option>\n<option value="CAM">Campania</option>\n<option value="EMR">Emilia-Romagna</option>\n<option value="FVG">Friuli-Venezia Giulia</option>\n<option value="LAZ">Lazio</option>\n<option value="LIG">Liguria</option>\n<option value="LOM">Lombardia</option>\n<option value="MAR">Marche</option>\n<option value="MOL">Molise</option>\n<option value="PMN" selected="selected">Piemonte</option>\n<option value="PUG">Puglia</option>\n<option value="SAR">Sardegna</option>\n<option value="SIC">Sicilia</option>\n<option value="TOS">Toscana</option>\n<option value="TAA">Trentino-Alto Adige</option>\n<option value="UMB">Umbria</option>\n<option value="VAO">Valle d\u2019Aosta</option>\n<option value="VEN">Veneto</option>\n</select>'
 
+# ITFiscalCodeField ##########################################################
+
+>>> from django.contrib.localflavor.it.forms import ITFiscalCodeField
+>>> f = ITFiscalCodeField()
+>>> f.clean('RVLMSM71L12E897Q')
+u'RVLMSM71L12E897Q'
+>>> f.clean('rvlmsm71l12e897q')
+u'RVLMSM71L12E897Q'
+>>> f.clean('RVL MSM 71L12 E897Q')
+u'RVLMSM71L12E897Q'
+>>> f.clean('RVL-MSM-71L12-E897Q')
+u'RVLMSM71L12E897Q'
+>>> f.clean('RVLMSM71L12E897A')
+Traceback (most recent call last):
+...
+ValidationError: [u'Enter a valid fiscal code.']
+>>> f.clean('%VLMSM71L12E897Q')
+Traceback (most recent call last):
+...
+ValidationError: [u'Enter a valid fiscal code.']
+
+# ITVatNumberField ###########################################################
+
+>>> from django.contrib.localflavor.it.forms import ITVatNumberField
+>>> f = ITVatNumberField()
+>>> f.clean('07973780013')
+u'07973780013'
+>>> f.clean('7973780013')
+u'07973780013'
+>>> f.clean(7973780013)
+u'07973780013'
+>>> f.clean('07973780014')
+Traceback (most recent call last):
+...
+ValidationError: [u'Enter a valid VAT number.']
+>>> f.clean('A7973780013')
+Traceback (most recent call last):
+...
+ValidationError: [u'Enter a valid VAT number.']
+
 # FIZipCodeField #############################################################
 
 FIZipCodeField validates that the data is a valid FI zipcode.

AUTHORS

@@ -174 +174 @@
     J. Rademaker
     Michael Radziej <mir@noris.de>
     ramiro
+    Massimiliano Ravelli <massimiliano.ravelli@gmail.com>
     Brian Ray <http://brianray.chipy.org/>
     remco@diji.biz
     rhettg@gmail.com