validates_uniqueness_of :id
validates_inclusion_of :visible, :in => [ true, false ]
validates_numericality_of :id, :on => :update, :integer_only => true
validates_numericality_of :changeset_id, :version, :integer_only => true
validates_associated :changeset
validates_uniqueness_of :id
validates_inclusion_of :visible, :in => [ true, false ]
validates_numericality_of :id, :on => :update, :integer_only => true
validates_numericality_of :changeset_id, :version, :integer_only => true
validates_associated :changeset