ArRollout

ArRollout is the ActiveRecord version of (Rollout)[https://github.com/jamesgolick/rollout], written after the wonderful Railscast (315-rollout-and-degrade)[http://railscasts.com/episodes/315-rollout-and-degrade] by Ryan Bates (thank you).

This project rocks and uses MIT-LICENSE.

HowTo

To use this gem, add on your gemfile

gem 'ar_rollout', git: 'git@github.com:doochoo-inc/ar_rollout.git'

and run the generator:

rails generate ar_rollout

This will create for you the initializer and the migration.

The migration looks like this:

class CreateRollout < ActiveRecord::Migration
  def up
    create_table :rollouts do |t|
      t.string :name
      t.string :group
      t.integer :user_id
      t.integer :percentage
      t.integer :failure_count
    end
  end

  def down
    drop_table :rollouts
  end
end

The initializer like this:

ArRollout.configure do |configure|
  # # Here you can define the logic for your own groups
  # # For example, if you have a admin? method for your User class
  # # you can define an :admin group:

  # configure.define_group :admin do |user|
  #   user.admin?
  # end

  # What if you want to add your 3 developers using email to a :dev group?
  # configure.define_group :devs do |user|
  #   ["alice@yourcompany.com", "bob@yourcompany.com"].include? user.email
  # end
end

You have to run the migration to have the table rollouts created in database:

rake db:migrate

And that's it. You're now ready to use ArRollout.

If you want to add a feature to a group you define in config/initializer/ar_rollout.rb, in your rails console you can do:

ArRollout.activate_group :my_new_amazing_feature, :tester

So, in your controller/view you can use the helper method rollout? :my_new_amazing_feature, which will test if the current_user is enabled to that feature.

Versions and ToDo

ToDo

• Activate a feature for all users

Version 0.0.1 - 13 Jan 2012

• Generator which create both migration and initializer
• activate_group and deactivate_group methods are available
• activate_user_ and deactivate_user methods are available