Module with dynamic method.

RedisSupport.rb

module RedisSupport
  after_save :load_into_redis
  before_destroy :remove_from_redis

  def self.included(base)
    unless base.respond_to? :load_into_redis
      raise(Exception.new, "Please define the methods \"load_into_redis\" before including this module") 
    end
  end

  # This method needs to be customize for each model
  def load_into_redis
  end

  def remove_from_redis
  end
end