AnalysisMethods::Magiq::RankComparable module. Used be Magiq module. The OrdinalComparison object is embedded in the MongoDB document of the object that uses the Magiq module.

rank_comparable.rb

# Copyright (c) 2012 Medhi Widjaja

module AnalysisMethods
  module Magiq
    module RankComparable
      class OrdinalComparison
        include Mongoid::Document
        
        field :id1,   type: Moped::BSON::ObjectId
        field :title, type: String
        field :pos,   type: Integer
        field :rank,  type: Integer
        field :score, type: Float
        embedded_in :ordinal_comparable

        validates_uniqueness_of :id1
        validates_presence_of :rank, :pos, :title, :id1 
      end
    end
  end
end