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304 lines
12 KiB
304 lines
12 KiB
2 years ago
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<?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($CFG->libdir.'/completionlib.php');
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$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' => $id);
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}else {
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print_error('unspecifycourseid', 'error');
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}
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$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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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', $context);
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}
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}
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}
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// Fix course format if it is no longer installed
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$course->format = course_get_format($course)->get_format();
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$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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$PAGE->set_other_editing_capability('moodle/course:movesections');
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}
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// Preload course format renderer before output starts.
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// This is a little hacky but necessary since
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// format.php is not included until after output starts
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if (file_exists($CFG->dirroot.'/course/format/'.$course->format.'/renderer.php')) {
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require_once($CFG->dirroot.'/course/format/'.$course->format.'/renderer.php');
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if (class_exists('format_'.$course->format.'_renderer')) {
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// call get_renderer only if renderer is defined in format plugin
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// otherwise an exception would be thrown
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$PAGE->get_renderer('format_'. $course->format);
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}
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}
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if ($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($CFG->wwwroot . '/?redirect=0');
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} else {
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redirect(course_get_url($course));
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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($CFG->wwwroot .'/');
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}
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$completion = new completion_info($course);
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if ($completion->is_enabled()) {
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$PAGE->requires->string_for_js('completion-alt-manual-y', 'completion');
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$PAGE->requires->string_for_js('completion-alt-manual-n', 'completion');
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$PAGE->requires->js_init_call('M.core_completion.init');
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}
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// We are currently keeping the button here from 1.x to help new teachers figure out
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// what to do, even though the link also appears in the course admin block. It also
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// means you can back out of a situation where you removed the admin block. :)
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if ($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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// 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', 'moodle', array('course' => $course->fullname, 'sectiontitle' => $sectiontitle, 'sectionname' => $sectionname)));
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} else {
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$PAGE->set_title(get_string('coursetitle', '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 && !empty($CFG->enableasyncbackup)) {
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// MDL-65321 The backup libraries are quite heavy, only require the bare minimum.
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require_once($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 $OUTPUT->notification(get_string('pendingasyncedit', 'backup'), 'warning');
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}
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}
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if ($completion->is_enabled()) {
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// This value tracks whether there has been a dynamic change to the page.
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// It is used so that if a user does this - (a) set some tickmarks, (b)
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// go to another page, (c) clicks Back button - the page will
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// automatically reload. Otherwise it would start with the wrong tick
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// values.
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echo html_writer::start_tag('form', array('action'=>'.', 'method'=>'get'));
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echo html_writer::start_tag('div');
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echo html_writer::empty_tag('input', array('type'=>'hidden', 'id'=>'completion_dynamic_change', 'name'=>'completion_dynamic_change', 'value'=>'0'));
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echo html_writer::end_tag('div');
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echo html_writer::end_tag('form');
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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 = $section;
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// Include the actual course format.
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require($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), $section);
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// Include course AJAX
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include_course_ajax($course, $modnamesused);
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echo $OUTPUT->footer();
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