Nif - Portuguese NIF generator and validator

Instalation

Just: # gem install nif

How does it work?

irb> require 'nif'
=> true
# generate a nif
irb> Nif::Generator.generate
=> "943935784"
# generate an unique nif (it will not be generated anymore during this session)
irb> Nif::Generator.generate_unique
=> "812627318"
# validate a nif
irb> Nif::Validator.validate '812627318'
=> true

Description

This gem covers the generation and validation of the Portuguese Fiscal Code (or NIF). I encourage you to contribute but be sure to include a test covering your changes in your pull request. I've tested it on ruby 1.8.7-p358, 1.9.3-p125 and rails 3.2.3.

Have fun!

Testing

# test unit
rake test
# rspec
rake spec
# cucumber features
rake cucumber
# check coverage
rake rcov # open coverage/index.html for the results

Rails Custom Validator

To have this included as a rails custom validator you have to include it on your model like this:

class Person < ActiveRecord::Base
  include Nif

  validates :nif, :nif=> true
end

nif comes with it's own I18n file but you can also define the :invalid key in your locale to have a custom message in your models like this:

en:
  activerecord:
    errors:
      models:
        person:
          attributes:
            nif:
              invalid: 'is not valid!'

TODO

Have javascript validations available.