gistfile1.txt

class Notification < ActiveRecord::Base
  serialize :device_ids # weak reference to devices
  validates_presence_of :message
  
  default_scope order("created_at DESC")
  scope :ready, where("ready == ?", true)
  scope :sent, where("sent_at IS NOT NULL")
  scope :not_sent, where("sent_at IS NULL")
  scope :sendable, not_sent.ready
  scope :old, lambda{ where("updated_at < ?", 10.days.ago) }
  scope :deletable, old.sent
  
  def self.per_page; 10;end
      
end


controller action:


  def notifications
    @notifications = Notification.not_sent.paginate(:page => params[:page])
    render
  end