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6e0210764a
* Create 'editing' versions of the coursetitle and coursesectiontitle lang strings used for the page title of the course homepage and use these when editing mode is turned on to provide immediate information to users, especially screen reader users, the current state of the course homepage.
306 lines
12 KiB
PHP
306 lines
12 KiB
PHP
<?php
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// Display the course home page.
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require_once('../config.php');
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require_once('lib.php');
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require_once($CFG->libdir.'/completionlib.php');
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redirect_if_major_upgrade_required();
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$id = optional_param('id', 0, PARAM_INT);
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$name = optional_param('name', '', PARAM_TEXT);
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$edit = optional_param('edit', -1, PARAM_BOOL);
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$hide = optional_param('hide', 0, PARAM_INT);
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$show = optional_param('show', 0, PARAM_INT);
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$idnumber = optional_param('idnumber', '', PARAM_RAW);
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$sectionid = optional_param('sectionid', 0, PARAM_INT);
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$section = optional_param('section', 0, PARAM_INT);
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$move = optional_param('move', 0, PARAM_INT);
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$marker = optional_param('marker',-1 , PARAM_INT);
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$switchrole = optional_param('switchrole',-1, PARAM_INT); // Deprecated, use course/switchrole.php instead.
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$return = optional_param('return', 0, PARAM_LOCALURL);
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$params = array();
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if (!empty($name)) {
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$params = array('shortname' => $name);
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} else if (!empty($idnumber)) {
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$params = array('idnumber' => $idnumber);
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} else if (!empty($id)) {
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$params = array('id' => $id);
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}else {
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throw new \moodle_exception('unspecifycourseid', 'error');
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}
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$course = $DB->get_record('course', $params, '*', MUST_EXIST);
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$urlparams = array('id' => $course->id);
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// Sectionid should get priority over section number
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if ($sectionid) {
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$section = $DB->get_field('course_sections', 'section', array('id' => $sectionid, 'course' => $course->id), MUST_EXIST);
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}
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if ($section) {
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$urlparams['section'] = $section;
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}
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$PAGE->set_url('/course/view.php', $urlparams); // Defined here to avoid notices on errors etc
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// Prevent caching of this page to stop confusion when changing page after making AJAX changes
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$PAGE->set_cacheable(false);
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context_helper::preload_course($course->id);
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$context = context_course::instance($course->id, MUST_EXIST);
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// Remove any switched roles before checking login
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if ($switchrole == 0 && confirm_sesskey()) {
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role_switch($switchrole, $context);
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}
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require_login($course);
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// Switchrole - sanity check in cost-order...
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$reset_user_allowed_editing = false;
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if ($switchrole > 0 && confirm_sesskey() &&
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has_capability('moodle/role:switchroles', $context)) {
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// is this role assignable in this context?
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// inquiring minds want to know...
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$aroles = get_switchable_roles($context);
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if (is_array($aroles) && isset($aroles[$switchrole])) {
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role_switch($switchrole, $context);
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// Double check that this role is allowed here
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require_login($course);
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}
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// reset course page state - this prevents some weird problems ;-)
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$USER->activitycopy = false;
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$USER->activitycopycourse = NULL;
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unset($USER->activitycopyname);
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unset($SESSION->modform);
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$USER->editing = 0;
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$reset_user_allowed_editing = true;
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}
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//If course is hosted on an external server, redirect to corresponding
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//url with appropriate authentication attached as parameter
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if (file_exists($CFG->dirroot .'/course/externservercourse.php')) {
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include $CFG->dirroot .'/course/externservercourse.php';
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if (function_exists('extern_server_course')) {
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if ($extern_url = extern_server_course($course)) {
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redirect($extern_url);
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}
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}
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}
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require_once($CFG->dirroot.'/calendar/lib.php'); /// This is after login because it needs $USER
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// Must set layout before gettting section info. See MDL-47555.
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$PAGE->set_pagelayout('course');
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$PAGE->add_body_class('limitedwidth');
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if ($section and $section > 0) {
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// Get section details and check it exists.
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$modinfo = get_fast_modinfo($course);
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$coursesections = $modinfo->get_section_info($section, MUST_EXIST);
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// Check user is allowed to see it.
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if (!$coursesections->uservisible) {
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// Check if coursesection has conditions affecting availability and if
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// so, output availability info.
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if ($coursesections->visible && $coursesections->availableinfo) {
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$sectionname = get_section_name($course, $coursesections);
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$message = get_string('notavailablecourse', '', $sectionname);
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redirect(course_get_url($course), $message, null, \core\output\notification::NOTIFY_ERROR);
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} else {
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// Note: We actually already know they don't have this capability
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// or uservisible would have been true; this is just to get the
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// correct error message shown.
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require_capability('moodle/course:viewhiddensections', $context);
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}
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}
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}
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// Fix course format if it is no longer installed
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$format = course_get_format($course);
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$course->format = $format->get_format();
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$PAGE->set_pagetype('course-view-' . $course->format);
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$PAGE->set_other_editing_capability('moodle/course:update');
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$PAGE->set_other_editing_capability('moodle/course:manageactivities');
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$PAGE->set_other_editing_capability('moodle/course:activityvisibility');
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if (course_format_uses_sections($course->format)) {
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$PAGE->set_other_editing_capability('moodle/course:sectionvisibility');
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$PAGE->set_other_editing_capability('moodle/course:movesections');
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}
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// Preload course format renderer before output starts.
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// This is a little hacky but necessary since
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// format.php is not included until after output starts
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$format->get_renderer($PAGE);
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if ($reset_user_allowed_editing) {
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// ugly hack
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unset($PAGE->_user_allowed_editing);
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}
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if (!isset($USER->editing)) {
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$USER->editing = 0;
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}
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if ($PAGE->user_allowed_editing()) {
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if (($edit == 1) and confirm_sesskey()) {
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$USER->editing = 1;
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// Redirect to site root if Editing is toggled on frontpage
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if ($course->id == SITEID) {
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redirect($CFG->wwwroot .'/?redirect=0');
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} else if (!empty($return)) {
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redirect($CFG->wwwroot . $return);
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} else {
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$url = new moodle_url($PAGE->url, array('notifyeditingon' => 1));
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redirect($url);
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}
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} else if (($edit == 0) and confirm_sesskey()) {
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$USER->editing = 0;
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if(!empty($USER->activitycopy) && $USER->activitycopycourse == $course->id) {
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$USER->activitycopy = false;
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$USER->activitycopycourse = NULL;
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}
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// Redirect to site root if Editing is toggled on frontpage
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if ($course->id == SITEID) {
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redirect($CFG->wwwroot .'/?redirect=0');
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} else if (!empty($return)) {
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redirect($CFG->wwwroot . $return);
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} else {
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redirect($PAGE->url);
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}
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}
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if (has_capability('moodle/course:sectionvisibility', $context)) {
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if ($hide && confirm_sesskey()) {
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set_section_visible($course->id, $hide, '0');
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redirect($PAGE->url);
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}
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if ($show && confirm_sesskey()) {
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set_section_visible($course->id, $show, '1');
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redirect($PAGE->url);
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}
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}
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if (!empty($section) && !empty($move) &&
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has_capability('moodle/course:movesections', $context) && confirm_sesskey()) {
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$destsection = $section + $move;
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if (move_section_to($course, $section, $destsection)) {
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if ($course->id == SITEID) {
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redirect($CFG->wwwroot . '/?redirect=0');
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} else {
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if ($format->get_course_display() == COURSE_DISPLAY_MULTIPAGE) {
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redirect(course_get_url($course));
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} else {
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redirect(course_get_url($course, $destsection));
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}
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}
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} else {
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echo $OUTPUT->notification('An error occurred while moving a section');
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}
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}
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} else {
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$USER->editing = 0;
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}
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$SESSION->fromdiscussion = $PAGE->url->out(false);
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if ($course->id == SITEID) {
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// This course is not a real course.
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redirect($CFG->wwwroot .'/?redirect=0');
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}
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// Determine whether the user has permission to download course content.
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$candownloadcourse = \core\content::can_export_context($context, $USER);
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// We are currently keeping the button here from 1.x to help new teachers figure out
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// what to do, even though the link also appears in the course admin block. It also
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// means you can back out of a situation where you removed the admin block. :)
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if ($PAGE->user_allowed_editing()) {
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$buttons = $OUTPUT->edit_button($PAGE->url);
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$PAGE->set_button($buttons);
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}
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$editingtitle = '';
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if ($PAGE->user_is_editing()) {
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// Append this to the page title's lang string to get its equivalent when editing mode is turned on.
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$editingtitle = 'editing';
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}
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// If viewing a section, make the title more specific
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if ($section and $section > 0 and course_format_uses_sections($course->format)) {
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$sectionname = get_string('sectionname', "format_$course->format");
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$sectiontitle = get_section_name($course, $section);
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$PAGE->set_title(get_string('coursesectiontitle' . $editingtitle, 'moodle', array(
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'course' => $course->fullname, 'sectiontitle' => $sectiontitle, 'sectionname' => $sectionname)
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));
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} else {
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$PAGE->set_title(get_string('coursetitle' . $editingtitle, 'moodle', array('course' => $course->fullname)));
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}
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$PAGE->set_heading($course->fullname);
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echo $OUTPUT->header();
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if ($USER->editing == 1) {
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// MDL-65321 The backup libraries are quite heavy, only require the bare minimum.
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require_once($CFG->dirroot . '/backup/util/helper/async_helper.class.php');
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if (async_helper::is_async_pending($id, 'course', 'backup')) {
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echo $OUTPUT->notification(get_string('pendingasyncedit', 'backup'), 'warning');
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}
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}
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// Course wrapper start.
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echo html_writer::start_tag('div', array('class'=>'course-content'));
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// make sure that section 0 exists (this function will create one if it is missing)
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course_create_sections_if_missing($course, 0);
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// get information about course modules and existing module types
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// format.php in course formats may rely on presence of these variables
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$modinfo = get_fast_modinfo($course);
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$modnames = get_module_types_names();
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$modnamesplural = get_module_types_names(true);
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$modnamesused = $modinfo->get_used_module_names();
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$mods = $modinfo->get_cms();
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$sections = $modinfo->get_section_info_all();
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// CAUTION, hacky fundamental variable defintion to follow!
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// Note that because of the way course fromats are constructed though
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// inclusion we pass parameters around this way..
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$displaysection = $section;
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// Include course AJAX
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include_course_ajax($course, $modnamesused);
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// Include the actual course format.
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require($CFG->dirroot .'/course/format/'. $course->format .'/format.php');
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// Content wrapper end.
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echo html_writer::end_tag('div');
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// Trigger course viewed event.
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// We don't trust $context here. Course format inclusion above executes in the global space. We can't assume
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// anything after that point.
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course_view(context_course::instance($course->id), $section);
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// If available, include the JS to prepare the download course content modal.
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if ($candownloadcourse) {
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$PAGE->requires->js_call_amd('core_course/downloadcontent', 'init');
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}
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// Load the view JS module if completion tracking is enabled for this course.
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$completion = new completion_info($course);
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if ($completion->is_enabled()) {
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$PAGE->requires->js_call_amd('core_course/view', 'init');
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}
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echo $OUTPUT->footer();
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