my_courses.php

<?php
/**
 * my_courses.php - Controller for user and seminar related
 * pages under "Meine Veranstaltungen"
 *
 * This program 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 2
 * of the License, or (at your option) any later version.
 *
 * This program 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 this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 *
 * @author    Jan-Hendrik Willms <tleilax+studip@gmail.com>
 * @author    David Siegfried <david@ds-labs.de>
 * @license   http://www.gnu.org/licenses/gpl-2.0.html GPL version 2 or later
 * @category  Stud.IP
 * @since     3.1
 */
require_once 'lib/meine_seminare_func.inc.php';
require_once 'lib/object.inc.php';

class MyCoursesController extends AuthenticatedController
{
    /**
     * @var Callable
     */
    private $performance_timer = null;

    public function before_filter(&$action, &$args)
    {
        parent::before_filter($action, $args);

        if ($GLOBALS['perm']->have_perm('admin')) {
            $this->redirect('admin/courses/index');
            return;
        }

        // we are defintely not in an lecture or institute
        closeObject();
        $_SESSION['links_admin_data'] = '';

        // measure performance of #index_action
        if ($action === 'index') {
            $this->performance_timer = Metrics::startTimer();
        }
    }

    public function after_filter($action, $args)
    {
        parent::after_filter($action, $args);

        // send performance metric
        if (isset($this->performance_timer)) {
            $timer = $this->performance_timer;
            $timer('core.my_courses_time');
        }
    }

    /**
     * Autor / Tutor / Teacher action
     */
    public function index_action()
    {