(C) Moorfields Eye Hospital NHS Foundation Trust, 2008-2011 (C) OpenEyes Foundation, 2011-2013 This file is part of OpenEyes. OpenEyes is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. OpenEyes is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenEyes in a file titled COPYING. If not, see .
Author: OpenEyes (info@openeyes.org.uk)
 /**
  * Returns the data model based on the primary key given in the GET variable.
  * If the data model is not found, an HTTP exception will be raised.
  * @param integer the ID of the model to be loaded
  */
 public function loadModel($id)
 {
     $model = YiiSession::model()->findByPk((int) $id);
     if ($model === null) {
         throw new CHttpException(404, 'The requested page does not exist.');
     }
     return $model;
 }
 /**
  * Ajax method to store theatre search options to the session.
  *
  * @TODO: should the keys for this not be validated?
  */
 public function actionSetDiaryFilter()
 {
     foreach ($_POST as $key => $value) {
         YiiSession::set('theatre_searchoptions', $key, $value);
     }
 }
 /**
  * Store the filter item in the user session.
  *
  * @param $field
  * @param $value
  */
 public function setFilter($field, $value)
 {
     YiiSession::set('waitinglist_searchoptions', $field, $value);
 }