Vindicate

Provides Vehicle Identification Number (VIN) number format for ActiveModel. Checks length, characters, and checksum calculation.

#app/models/vin.rb
validates :number, vin: true # validates 'number' attribute is proper vin format

Add this line to your application's Gemfile:

gem 'vindicate'

And then execute:

$ bundle

Or install it yourself as:

$ gem install vindicate

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