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