# scoped_id Generates scoped unique identifiers. ## Installation Add `scoped_id` to your Gemfile: gem 'scoped_id', '~> 0.0.2' ## Usage ``` class Project < ActiveRecord::Base include ScopedId::Concern scoped_id :per_owner_id, scope: :owner_id end jacks_project = Project.create(owner_id: 1) jacks_project.per_owner_id # => 1 johns_project = Project.create(owner_id: 2) johns_project.per_owner_id # => 1 ``` The scoped_id is generated in a `before_create` callback unless it has been manually set. The scoped_id will be marked as readonly and will validate the uniqueness of its value. ### Options #### Scope (required) The scope by which to determine the next identifier when creating a new object. ## Contributing 1. Fork it ( http://github.com/mbillard/scoped_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