public function editDate()
 {
     if (!isset($_POST['date']) || empty($_POST['date'])) {
         return false;
     }
     $id = mysql_escape_string($_GET['id']);
     $weekindex = null;
     if (isset($_GET['week'])) {
         $weekindex = mysql_escape_string((int) $_GET['week']);
     }
     if (null !== $weekindex && $this->webStorageIndex->indexHasId($id)) {
         $timesheet = new Timesheet($id);
         $timesheet->setWeekDate($weekindex, date_create_from_format('Y-m-d', $_POST['date'])->getTimestamp());
         $timesheet->save();
     } else {
         $this->view->setTemplate('404_timesheet');
     }
 }