We advice you to use this one instead : https://github.com/yolk/valvat
Use this plugin to validate VAT numbers for European countries.
To validate a model field as a valid intracom VAT number :
validates :vat_number, :vat => true
It may be optional like this :
validates :vat_number, :vat => true, :allow_blank => true
If you want the VAT number's country to match another kind of country field, use the 'country_method' option :
validates :vat_number, :vat => { :country_method => :my_method }
where it is supposed that your model has a method named 'my_method' which returns the country ISO code you want to match. The available country codes available for Europa are: DE, AT, BE, BG, CY, DK, ES, EE, FI, FR, EL, HU, IE, IT, LV, LT, LU, MT, NL, PL, PT, GB, RO, SK, SI, SE and CZ.
Example :
class Invoice < ActiveRecord::Base validates :vat_number, :vat => { :country_method => :country_code }
# Logic to return the country code
def country_code
case country.downcase
when 'belgium' then 'BE'
when 'france' then 'FR'
when 'sweden' then 'SE'
# ...
else nil
end
end
end
It's also possible to have the VAT number validated against Europa's VIES webservice. Simply use the :vies option like this :
validates :vat_number, :vat => { :vies => true }
Keep in mind that the webservice might be offline at some time for some countries. Check the VIES FAQ for more information about that.
In your project's Gemfile :
gem 'vat_validator'
= Tests
If you want to run the specs :
rake spec
This plugin in released under MIT license by Aurélien Malisart (see MIT-LICENSE file).