kasima · February 17, 2011 04:24 · Feb 17, 2011
diff --git a/gistfile1.rb b/gistfile1.rb
@@ -0,0 +1,33 @@
+class Game
+  include Mongoid::Document
+  field :title
+
+  references_and_referenced_in_many :players
+end
+
+class Player
+  include Mongoid::Document
+  field :name
+
+  references_many :games
+end
+
+game = Game.new
+
+3.times { |i| game.players << Player.new }
+game.save
+# => true
+
+game.reload
+
+game.players.size
+# => 3
+game.player_ids.size
+# => 3
+
+game.players.first.destroy
+
+game.players.size
+# => 2
+game.player_ids.size
+# => 3