= ValidatesCNPJ {<img src="https://secure.travis-ci.org/plribeiro3000/validates_cnpj.png" />}[http://travis-ci.org/plribeiro3000/validates_cnpj]

Rails gem to validate CNPJ

== Install

gem install validates_cnpj

== Usage

Lets say you have a model with "cnpj" string column that you want to be a valid CNPJ. Just add this to your model:

class User < ActiveRecord::Base
    validates :cnpj, :cnpj => true
end

== Test

Only Rspec supported at the moment. The gem already have macros for shoulda-macros and remarkable.

If you are using shoulda-matchers, add this line to your spec_helper.rb :
    require "validates_cnpj/shoulda-matchers/validate_as_cnpj_matcher"
If you are using remarkable, add this line to your spec_helper.rb :
    require "validates_cnpj/remarkable/validate_as_cnpj_matcher"

=== How?

You should use validates_as_cnpj(:attribute) just like any other shoulda matcher.

== Special Thanks

This project is based on brcpfcnpj gem and his intention it to mantain a cleaner code to validate CNPJ and easy macros to test it.