Dependency Injection for Rails

DependencyInjectionRails adds a helper method, called container, to access to your ruby dependency injection container

Just add the gem to your Gemfile

gem 'dependency_injection-rails'

Or simply install it using rubygems:

gem install dependency_injection-rails

In a classic application simply require the helper, and start using it:

class ProductsController < ApplicationController
  def create
    @trendings = container.get('awesome_service').find_trending
  end

  # The rest of your controller code goes here...
end

By default it will try to load config/services.yml configuration file, but if your configuration file is stored in another place, you can easily change it in an initializer:

DependencyInjectionRails.services_path = Rails.root.join('config'. 'anther_name.yml')