format.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/>.

/**
 * Progress Section Format
 *
 * @package    format_vsf
 * @copyright  &copy; 2016-onwards G J Barnard in respect to modifications of standard topics format.
 * @author     G J Barnard - gjbarnard at gmail dot com and {@link http://moodle.org/user/profile.php?id=442195}
 * @license    https://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');

// Horrible backwards compatible parameter aliasing..
if ($topic = optional_param('topic', 0, PARAM_INT)) {
    $url = $PAGE->url;
    $url->param('section', $topic);
    debugging('Outdated topic param passed to course/view.php', DEBUG_DEVELOPER);
    redirect($url);
}
// End backwards-compatible aliasing..

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

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

// Make sure all sections are created.
course_create_sections_if_missing($course, 0);

$renderer = $PAGE->get_renderer('format_vsf');

$content = '';
$contentcontext = [
    'title' => $courseformat->page_title(),
];
if (!is_null($displaysection)) {
    $courseformat->set_sectionnum($displaysection);
    $content = $renderer->single_section_page($course, $displaysection);
    $contentcontext['sectionreturn'] = $displaysection;
} else {
    $content = $renderer->multiple_section_page($course);
}
$contentcontext['content'] = $content;

echo $renderer->render_from_template('format_vsf/content', $contentcontext);

if ((!$PAGE->user_is_editing()) && ($courseformat->get_course_display() == COURSE_DISPLAY_SINGLEPAGE)) {
    if ($course->layoutcolumns > 1) {
        $PAGE->requires->js_call_amd('format_vsf/sectiontitle', 'init');
    }
}