Source code for localflavor.it.forms
"""IT-specific Form helpers."""
import re
from django.forms import ValidationError
from django.forms.fields import CharField, RegexField, Select
from django.utils.translation import gettext_lazy as _
from .it_province import PROVINCE_CHOICES
from .it_region import REGION_CHOICES, REGION_PROVINCE_CHOICES
from .util import ssn_validation, vat_number_validation
[docs]class ITZipCodeField(RegexField):
"""
A form field that validates input as an Italian zip code.
Valid codes must have five digits.
"""
default_error_messages = {
'invalid': _('Enter a valid zip code.'),
}
def __init__(self, **kwargs):
super().__init__(r'^\d{5}$', **kwargs)
[docs]class ITRegionSelect(Select):
"""A Select widget that uses a list of IT regions as its choices."""
def __init__(self, attrs=None):
super().__init__(attrs, choices=REGION_CHOICES)
[docs]class ITRegionProvinceSelect(Select):
"""A Select widget that uses a named group list of IT regions mapped to regions as its choices."""
def __init__(self, attrs=None):
super().__init__(attrs, choices=REGION_PROVINCE_CHOICES)
[docs]class ITProvinceSelect(Select):
"""A Select widget that uses a list of IT provinces as its choices."""
def __init__(self, attrs=None):
super().__init__(attrs, choices=PROVINCE_CHOICES)
[docs]class ITSocialSecurityNumberField(RegexField):
"""
A form field that validates Italian Tax code (codice fiscale) for both persons and entities.
For reference see http://www.agenziaentrate.it/ and search for:
* 'Informazioni sulla codificazione delle persone fisiche' for persons' SSN
* 'Codice fiscale Modello AA5/6' for entities' SSN
.. versionchanged:: 1.1
The ``ITSocialSecurityNumberField`` now also accepts SSN values for
entities (numeric-only form).
"""
default_error_messages = {
'invalid': _('Enter a valid Tax code.'),
}
def __init__(self, **kwargs):
super().__init__(
r'^\w{3}\s*\w{3}\s*\w{5}\s*\w{5}$|\d{10}', **kwargs
)
[docs] def clean(self, value):
value = super().clean(value)
if value in self.empty_values:
return value
value = re.sub(r'\s', '', value).upper()
# Entities SSN are numeric-only
if value.isdigit():
try:
return vat_number_validation(value)
except ValueError:
raise ValidationError(self.error_messages['invalid'], code='invalid')
# Person SSN
else:
try:
return ssn_validation(value)
except (ValueError, IndexError):
raise ValidationError(self.error_messages['invalid'], code='invalid')
[docs]class ITVatNumberField(CharField):
"""A form field that validates Italian VAT numbers (partita IVA)."""
default_error_messages = {
'invalid': _('Enter a valid VAT number.'),
}
[docs] def clean(self, value):
value = super().clean(value)
if value in self.empty_values:
return value
try:
return vat_number_validation(value)
except ValueError:
raise ValidationError(self.error_messages['invalid'], code='invalid')