NumberPlateValidator

This gem provides a validator for license plate validation. It iss being actively developed to expand to special plates and more countries and regions. Contributions are welcome.

Singapore: checksumed plates Malaysia: Not exhaustive. Please check the specs for examples of covered cases

Add this line to your application's Gemfile:

gem 'number_plate_validator'

And then execute:

$ bundle

Or install it yourself as:

$ gem install number_plate_validator

Use standard country code to spcify the country.

  ##Initialize validator:
  validator =  NumberPlateValidator.validator("SG")

  ##Check if it is valid:
  validator.is_valid?("EJ81D")
  #=> true
   
  validator.is_valid?("EJ81E")
  #=> false

  ##get the current country code
  validator.country
  #=> "SG"

A NumberPlateValidator is provided with this gem to be used with ActiveModel. You can specify the attribute with the country information with either a symbol or a Proc.

class Vehicle < ActiveRecord::Base
  validates :plate_number, number_plate: { country: "SG" }  ##country is fixed to "SG"

  ##or use either of the following to get the country from the attribute country_code
  ##validates :plate_number, number_plate: { country: :country_code }  
  ##validates :plate_number, number_plate: { country Proc.new { |obj| obj.country_code } }
end

A CLI is provided to check the plate validity

$number_plate validate -c SG EJ81D
$true

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/ej2005/number_plate_validator.

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