cancel.php

<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle 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.
//
// Moodle 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 Moodle.  If not, see <http://www.gnu.org/licenses/>.

/**
 * Intermediary screen for cancelling a sharedresource edition and routing
 *
 * @package     mod_sharedresource
 * @author      Valery Fremaux <valery.fremaux@gmail.com>
 * @copyright   Valery Fremaux  (activeprolearn.com)
 * @license     http://www.gnu.org/copyleft/gpl.html GNU Public License
 */

require('../../config.php');
$courseid = required_param('course', PARAM_INT);
$return = required_param('return', PARAM_INT);

if (!$course = $DB->get_record('course', ['id' => $courseid])) {
    throw new moodle_exception('coursemisconf');
}

$context = context_course::instance($courseid);

// Security.

require_course_login($course);
require_capability('moodle/course:manageactivities', $context);

// Route depending on return.

unset($SESSION->sr_entry);

if (!$return && ($courseid > SITEID)) {
    redirect(new moodle_url('/course/view.php', ['id' => $courseid]));
} else {
    $systemcontext = context_system::instance();
    if (has_capability('repository/sharedresources:view', $systemcontext)) {
        redirect(new moodle_url('/local/sharedresources/index.php'));
    } else {
        $redirect($CFG->wwwroot);
    }
}