_touch_row

# File activerecord/lib/active_record/persistence.rb, line 684
    def _touch_row(attribute_names, time)
      time ||= current_time_from_proper_timezone

      attribute_names.each do |attr_name|
        write_attribute(attr_name, time)
        clear_attribute_change(attr_name)
      end

      _update_row(attribute_names, "touch")
    end