Mockingbird example

mockingbird.rb

class Mockingbird < ActiveRecord::Base
  attr_accessible :color

  def chirp!
    "chirp"
  end

  def tweet!
    "tweet"
  end

  def vocalize!
    if chirpy?
      chirp!
    elsif tweety?
      tweet!
    end
  end

  def chirpy?
    color == "red"
  end

  def tweety?
    color == "blue"
  end
end


def make_em_sing
  Mockingbird.find_each(&:vocalize!)
end