Hides Draper decorator inside the model and lazily decorates resources

decorated.rb

# Hides Draper decorator inside the model and lazily decorates resources
#
# https://gist.github.com/firedev/7a82059b30a2157d4c56
#
# model.rb:
# include Decorated
#
# Just make sure there are no overlapping method names in ModelDecorator

module Decorated
  extend ActiveSupport::Concern

  def method_missing(method, *args)
    return decorated_resource.send(method, *args) if decorated_resource.respond_to?(method)
    super
  end

  def decorated_resource
    @decorated_resource ||= decorate
  end
end