1module Pageable
 2  extend ActiveSupport::Concern
 3  DEFAULT_PER_PAGE=12
 4
 5  def page
 6    params[:page]
 7  end
 8
 9  def per_page
10    params[:per_page] || DEFAULT_PER_PAGE
11  end
12
13  def paginate(items)
14    items.page(page).per(per_page)
15  end
16end