module.rb

module EladPaginator

  def self.included(base)

    base.class_eval do
      include InstanceMethods
      extend ClassMethods
    end
  end

  module InstanceMethods

  end

  module ClassMethods
    scope :page, -> (page, per_page) { limit(per_page.to_i).offset((page.to_i - 1) * per_page.to_i)}
  end
end


class Product < ActiveRecord::Base
  
  # price_in_cents         integer
  # shipping_cost_in_cent  integer
end


p = Product.new


p.price = 32.1 #=> price_in_cents == 3210

puts p.price #=> 32.1


# define_method