NifVal
Description
NifVal is a simple gem which adds a Spanish NIF/NIE/CIF validator to ActiveModel. You simply have to validate ":nif" for "true" for a specific field.
Usage
Let's see an example:
class Person
validates :nif, :nif => true
attr_accessor :nif
end
Then if we create an instance and see if it is valid, the validation will be checked.
Let's see one example for each case. A successful validation (correct control digit T for 00000000):
p = Person.new("00000000T")
p.valid? # will return true
And an unsuccessful one (mistaken control digit C for A2345678):
p = Person.new("A2345678C")
p.valid? # will return false
Installation
Simply add this gem to your Gemfile...
...
gem "nifval"
...
...and execute "bundle".
Note: It appears that if we load NifVal after Devise, Nifval won't work. In order to make everything work, simply add Nifval before Devise in the Gemfile.
Then run the generator in order to install the I18n template:
rails generate nifval:install
And you are done!
Documentation
Adapted from here.
You can also find more information on Wikipedia.