This is gist to show the mongoid group

Item Code for Mongoid

class Item
  include Mongoid::Document
  
  field :fulltext, :type => String, :default => ""
  field :_keywords, :type => Array
  index :_keywords
  
  field :created_by_id, :type => Integer
  index :created_by_id
  
  field :item_validated, :type => Boolean
  index :item_validated

  field :mysql_id, :type => Integer
  index :mysql_id
  
  field :owner_ids, :type => Array, :default => []
  index :owner_ids
  
  field :wantlist_ids, :type => Array, :default => []
  index :wantlist_ids
  field :wantlist_blacklisted_ids, :type => Array, :default => []
  index :wantlist_blacklisted_ids
  
  field :tradelist_ids, :type => Array, :default => []
  index :tradelist_ids
  field :tradelist_blacklisted_ids, :type => Array, :default => []
  index :tradelist_blacklisted_ids
    
  field :major_type_id, :type => Integer
  index :major_type_id
  
  field :year, :type => Integer
  index :year
  
  field :set_id, :type => Integer
  index :set_id
  field :set_name, :type => String
  index :set_name

  field :subset_id, :type => Integer
  index :subset_id
  field :subset_name, :type => String
  index :subset_name
  
  field :team_id, :type => Integer
  index :team_id
  field :team_name, :type => String
  index :team_name
  
  field :name, :type => String
  index :name
  
  field :intNumber, :type => Integer
  index :intNumber
  field :number, :type => String
  index :number
  
  validates_presence_of :mysql_id
  validates_presence_of :major_type_id
  
  before_save :tokenize_fulltext
  
private
    def tokenize_fulltext
      self.fulltext ||= ""
      self._keywords = self.fulltext.downcase.gsub(/\./, "").gsub(/\\|\//, " ").split(" ")
    end
end

#<Item _id: 4d339ef4f245c1d587041adb, number: nil, intNumber: nil, name: nil, _keywords: ["2003", "fleer", "genuine", "longball", "threats", "single", "swatch", "9", "9a", "mordonez", "jsy-andruw"], set_id: 10826, item_validated: true, created_by_id: nil, subset_id: 49828, tradelist_blacklisted_ids: nil, wantlist_blacklisted_ids: nil, mysql_id: 513601, owner_ids: [], team_name: nil, major_type_id: 1, fulltext: "2003 Fleer Genuine Longball Threats Single Swatch 9 9A MOrdonez Jsy-Andruw", year: 2003, subset_name: nil, set_name: nil, team_id: nil, tradelist_ids: nil, wantlist_ids: nil>