format.php

<?php
// This file is part of Timeline course format for 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/>.

/**
 * Timeline course format. Displays the whole course a social network timeline with discussions.
 *
 * @package    format_timeline
 * @copyright  2020 onwards Willian Mano {@link https://conecti.me}
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */

defined('MOODLE_INTERNAL') || die();

require_once($CFG->libdir.'/filelib.php');
require_once($CFG->libdir.'/completionlib.php');

$order = optional_param('order', null, PARAM_TEXT);
$filter = optional_param('filter', null, PARAM_TEXT);

$context = core\context\course::instance($course->id);
// Retrieve course format option fields and add them to the $course object.
$course = course_get_format($course)->get_course();

if (($marker >= 0) && has_capability('moodle/course:setcurrentsection', $context) && confirm_sesskey()) {
    $course->marker = $marker;
    course_set_marker($course->id, $marker);
}

// Make sure section 0 is created.
course_create_sections_if_missing($course, 0);

$viewoptions = [
    'order' => $order,
    'filter' => $filter
];

$renderer = $PAGE->get_renderer('format_timeline');
$timeline = new format_timeline\output\timeline($course, $PAGE, $viewoptions);

echo $renderer->render($timeline);

// Include course format js module.
$PAGE->requires->js('/course/format/timeline/format.js');