Rn

This gem adds a validator for the Belgium government registration numbers (also known as rijksregisternummer or RN for short). You can use it to check if the registration number is a valid number, you can also optionally check against a users birthday.

Installation

Add this line to your application's Gemfile:

gem 'rn'

And then execute:

$ bundle

Or install it yourself as:

$ gem install rn

Usage

Using the RnValidator:

class User < ActiveRecord::Base
    validates :number, rn: true
end

This will only check if the number conforms to the rules specified by the Belgian government.

You can also validate against the users birthday:

class User < ActiveRecord::Base
    validates :number, rn: { birthday: true }
end

This will look for the users birthday in the birthday property which has to be a Date. If you want to use another method or column, you can do that as follows:

class User < ActiveRecord::Base
    validates :number, rn: { birthday: true, birthday_column: :date_of_birth }
end

I18n

Add the following to your locale file:

en:
    activemodel:
        errors:
            models:
                MODEL:
                    attributes:
                        ATTRIBUTE:
                            invalid_registration_number: 'is not a valid registration number'
                            no_matching_birthday: 'does not match birthday'

Contributing

1. Fork it
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Add some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create new Pull Request