This django field can be used to introduce Spanish national Identification Numbers (NIF). It validates the NIF format and checks if the last letter is correct.
It also validates NIE numbers for foreign people.
You can use the field in your own forms:
'code' dni = DNIField(max_length=15, widget=forms.TextInput(), label=_('DNI')) 'code'
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 | def fiscal_letter(fiscal_num=None):
"""return the correct letter for the fiscal_num param"""
if fiscal_num:
result = fiscal_num%23
letters='TRWAGMYFPDXBNJZSQVHLCKE'
return letters[result]
return fiscal_num
def is_valid_id(dni_type, number):
""""""
is_valid = False
if dni_type == 'nif' :
if number[0:8].isdigit() and len(number) == 9:
letter = fiscal_letter(int(number[0:8]))
is_valid = number[8].upper() == letter
elif dni_type == 'nie':
correct_length = len(number) == 10 or len(number) == 9
correct_letter = number[0].upper() == 'X' or number[0].upper() == 'Y'
correct_digits = number[1:len(number)-1].isdigit()
if correct_digits and correct_length and correct_letter:
letter = fiscal_letter(int(number[1:-1]))
is_valid = number[-1].upper() == letter
else:
is_valid=True
return is_valid
#
#
from django.core.validators import EMPTY_VALUES
from django.forms import ValidationError
class DNIField(CharField):
default_error_messages = {
'invalid': _('Please, enter a valid DNI'),
}
def clean(self, value):
super(CharField, self).clean(value)
if value in EMPTY_VALUES:
return u''
first_letter = value[0]
type_id = "nif"
try:
int(first_letter)
except ValueError:
type_id = "nie"
if is_valid_id(type_id, value):
return value
raise ValidationError(self.error_messages['invalid'])
|
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Comments
Congrats for publishing a snippet and share your work with the community. However, wasn't this solved with spanish localflavor?
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Oh, you are right!
I didn't know the field was already done in local flavours module,
Thank you.
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