Mixins & Self

mixins_inhe.rb

module Foo
  def save
    puts 'in save'
  end
end

module Foo
  def self.included(resource)
    resource.extend ClassMethods
  end

  def initialize
    class << self; lol('haha'); end
  end

  module ClassMethods
    def find
      puts 'find'
      lol('hehe')
    end
  end
end

class Bar
  include Foo

  def self.lol(atr)
    puts "in lol #{atr}"
  end
end

Bar.find
b = Bar.new
b.save