public function executeGetHTMLCourses(sfWebRequest $request)
 {
     global $CFG;
     $CFG->current_app->requireMahara();
     $params = array();
     foreach (GcrCourseList::getParameterList() as $key => $value) {
         $params[$key] = $request->getParameter($key);
     }
     $this->course_list = new GcrCourseList($params, $CFG->current_app);
     sfConfig::set('sf_escaping_strategy', false);
 }