belongs_to :map_bug, :foreign_key => 'bug_id'
belongs_to :user, :foreign_key => 'commenter_id'
+ validates_inclusion_of :event, :in => [ "opened", "closed", "reopened", "commented", "hidden" ]
+
validates_presence_of :id, :on => :update
validates_uniqueness_of :id
validates_presence_of :visible