Turkish ID

This gem provides methods to validate Turkish Identification Numbers.

Installation

Add this line to your application's Gemfile:

gem 'turkish_id'

And then execute:

$ bundle

Or install it yourself as:

$ gem install turkish_id

Usage

Create a new instance:

identity_number = TurkishId.new('10000000146')

Use is_valid? method to check validity:

identity_number.is_valid?
=> true

Or use the command line executable:

$ turkish_id 10000000078
Your identification number is valid.

Use get_relatives method to check relatives:

identity_number.get_relatives(3)
=> ["10003000082", "10005999902", "10008999848"]

Anatomy of the Turkish ID Number

The Turkish Identification Number consists of 11 digits.

There are three conditions for a valid identification number:

1. d1 > 0
2. d10 == ((d1 + d3 + d5 + d7 + d9) * 7 - (d2 + d4 + d6 + d8)) mod 10
3. d11 == (d1 + d2 + d3 + d4 + d5 + d6 + d8 + d9 + d10) mod 10

Where dn refers to the n-th digit of the identification number.

Remember that a valid identification number does not imply the existence of an ID. It could only be used as a preliminary check e.g. before querying a government website. This is very similar to credit card validation.

Development

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.

Contributing

1. Fork it ( http://github.com/krmbzds/turkish_id/fork )
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

Bug reports and pull requests are welcome on GitHub at https://github.com/krmbzds/turkish_id.

License

Copyright © 2015 Kerem Bozdaş

This gem is available under the terms of the MIT License.