ModelId

Gem add feature for id and find by this id across all instances of the model.

Installation

Add this line to your application's Gemfile:

gem 'model_id'

And then execute:

$ bundle

Or install it yourself as:

$ gem install model_id

Include ModelId::Base to model's class:

class User
    include ModelId::Base
end

Now your model has #model_id:

User.new.model_id

And you can find instances by id:

user = User.new
User.find_by_id(user.model_id) # => user

After you don't need this instance anymore you can delete it from the index by #delete_model:

user = User.new
User.find_by_id(user.model_id) # => user
user.delete_model
User.find_by_id(user.model_id) # => nil

Since ruby < 2.0 don't have prepend method you should manually call #set_next_model_id in your constructor:

class User
    include ModelId::Base
    def initialize
        set_next_model_id
    end
end