/**
* Move a tour up or down.
*
* @param int $id The tour to move.
*/
protected function move_tour($id)
{
require_sesskey();
$direction = required_param('direction', PARAM_INT);
$tour = tour::instance($id);
$currentsortorder = $tour->get_sortorder();
$targetsortorder = $currentsortorder + $direction;
$swapwith = helper::get_tour_from_sortorder($targetsortorder);
// Set the sort order to something out of the way.
$tour->set_sortorder(-1);
$tour->persist();
// Swap the two sort orders.
$swapwith->set_sortorder($currentsortorder);
$swapwith->persist();
$tour->set_sortorder($targetsortorder);
$tour->persist();
redirect(helper::get_list_tour_link());
}
