Experimentations with Ruby's super

upstream.rb

module Upstream

  module Streamer
    def self.included(receiver)
      receiver.extend ExtensionMethods
    end

    module ExtensionMethods
      def streamable!
        self.send :include, InstanceMethods
      end
    end

    module InstanceMethods
      def index!
        execute_on_index('index!')
      end
      
      protected
      def execute_on_index(text)
        "Streamer #{text.upcase}!"
      end
      
      def insert_on_index
        execute_on_index('insert on index')
      end
    end
  end
end

class Scopable
  include Upstream::Streamer
  streamable!
  
  attr_accessor :scope
  
  def index!
    unless scope.nil?
      execute_on_index('uh knoh')
    else
      super
    end
  end
  
  protected
  
  def insert_on_index
    unless scope.nil?
      execute_on_index('insert on uh knoh!')
    else
      super
    end
  end
  
end

s = Scopable.new

puts s.index!
puts s.send :insert_on_index

s.scope = :local

puts s.index!
puts s.send :insert_on_index