This gem allows to validate Brazilian documents, CPF and CNPJ, with format and digit verification.

Add this line to your application's Gemfile:

gem 'bra_document_validation'

And then execute:

bundle install

Or install it yourself as:

gem install bra_document_validation

validates :document_number, 'bra_document_validation/cpf': true
validates :document_number, 'bra_document_validation/cnpj': true
validates :document_number, 'bra_document_validation/cpf_or_cnpj': true

You might need add CPF and CNPJ acronyms to inflactions.

# config/initializers/inflections.rb
ActiveSupport::Inflector.inflections do |inflect|
    inflect.acronym 'CPF'
    inflect.acronym 'CNPJ'
end

By default, it expects a raw document number (only numbers). However you can pass options if your number is formatted.

validates :document_number, 'bra_document_validation/cpf': { formatted: true }
validates :document_number, 'bra_document_validation/cnpj': { formatted: false }
validates :document_number, 'bra_document_validation/cpf_or_cnpj': { formatted: false }

When the document format does not match invalid_format message is added to the errors on field. When the document verification digit is invalid invalid_verification_digit. However you can add a custom message that substitute the above messages.

validates :document_number, 'bra_document_validation/cpf': { message: :invalid }
validates :document_number, 'bra_document_validation/cnpj': { message: 'A custom message' }
validates :document_number, 'bra_document_validation/cpf_or_cnpj': { message: :invalid }

After checking out the repo, run bin/setup to install dependencies. Then, run rake spec to run the tests. You can also run bin/console for an interactive prompt that will allow you to experiment.

To install this gem onto your local machine, run bundle exec rake install. To release a new version, update the version number in version.rb, and then run bundle exec rake release, which will create a git tag for the version, push git commits and tags, and push the .gem file to rubygems.org.

Bug reports and pull requests are welcome on GitHub at https://github.com/[USERNAME]/bra_document_validation.

The gem is available as open source under the terms of the MIT License.