gistfile1.rb

class FanCount
  @queue = "FanCount"
  include Mongoid::Document
  
  field :page_id
  field :fans
  field :date, :type => DateTime

  index :page_id, :unique => true, :background => true
  index(
    [ [:page_id, Mongo::ASCENDING], [:date, Mongo::DESCENDING] ],
    :unique => true,
    :background => true)

  class << self
    def perform(page_id = nil, fan_count = nil)
      unless page_id
        Page.all.each do |page|
          Resque.enqueue(self, page.id, page.fan_count)
        end
        return true
      end
      collection.update(
        {:date => Date.today.to_time, :page_id => page_id},
        {:fans => fan_count, :date => Date.today.to_time, :page_id => page_id},
        {:upsert => true}
      )
    end
  end

end