function wiki_extend_navigation(navigation_node $navref, $course, $module, $cm)
{
global $CFG, $PAGE, $USER;
require_once $CFG->dirroot . '/mod/wiki/locallib.php';
$context = context_module::instance($cm->id);
$url = $PAGE->url;
$userid = 0;
if ($module->wikimode == 'individual') {
$userid = $USER->id;
}
if (!($wiki = wiki_get_wiki($cm->instance))) {
return false;
}
if (!($gid = groups_get_activity_group($cm))) {
$gid = 0;
}
if (!($subwiki = wiki_get_subwiki_by_group($cm->instance, $gid, $userid))) {
return null;
} else {
$swid = $subwiki->id;
}
$pageid = $url->param('pageid');
$cmid = $url->param('id');
if (empty($pageid) && !empty($cmid)) {
// wiki main page
$page = wiki_get_page_by_title($swid, $wiki->firstpagetitle);
$pageid = $page->id;
}
if (wiki_can_create_pages($context)) {
$link = new moodle_url('/mod/wiki/create.php', array('action' => 'new', 'swid' => $swid));
$node = $navref->add(get_string('newpage', 'wiki'), $link, navigation_node::TYPE_SETTING);
}
if (is_numeric($pageid)) {
if (has_capability('mod/wiki:viewpage', $context)) {
$link = new moodle_url('/mod/wiki/view.php', array('pageid' => $pageid));
$node = $navref->add(get_string('view', 'wiki'), $link, navigation_node::TYPE_SETTING);
}
if (wiki_user_can_edit($subwiki)) {
$link = new moodle_url('/mod/wiki/edit.php', array('pageid' => $pageid));
$node = $navref->add(get_string('edit', 'wiki'), $link, navigation_node::TYPE_SETTING);
}
if (has_capability('mod/wiki:viewcomment', $context)) {
$link = new moodle_url('/mod/wiki/comments.php', array('pageid' => $pageid));
$node = $navref->add(get_string('comments', 'wiki'), $link, navigation_node::TYPE_SETTING);
}
if (has_capability('mod/wiki:viewpage', $context)) {
$link = new moodle_url('/mod/wiki/history.php', array('pageid' => $pageid));
$node = $navref->add(get_string('history', 'wiki'), $link, navigation_node::TYPE_SETTING);
}
if (has_capability('mod/wiki:viewpage', $context)) {
$link = new moodle_url('/mod/wiki/map.php', array('pageid' => $pageid));
$node = $navref->add(get_string('map', 'wiki'), $link, navigation_node::TYPE_SETTING);
}
if (has_capability('mod/wiki:viewpage', $context)) {
$link = new moodle_url('/mod/wiki/files.php', array('pageid' => $pageid));
$node = $navref->add(get_string('files', 'wiki'), $link, navigation_node::TYPE_SETTING);
}
if (has_capability('mod/wiki:managewiki', $context)) {
$link = new moodle_url('/mod/wiki/admin.php', array('pageid' => $pageid));
$node = $navref->add(get_string('admin', 'wiki'), $link, navigation_node::TYPE_SETTING);
}
}
}
/**
* Returns a list of wikis in a provided list of courses,
* if no list is provided all wikis that the user can view will be returned.
*
* @param array $courseids The courses IDs.
* @return array Containing a list of warnings and a list of wikis.
* @since Moodle 3.1
*/
public static function get_wikis_by_courses($courseids = array())
{
$returnedwikis = array();
$warnings = array();
$params = self::validate_parameters(self::get_wikis_by_courses_parameters(), array('courseids' => $courseids));
$mycourses = array();
if (empty($params['courseids'])) {
$mycourses = enrol_get_my_courses();
$params['courseids'] = array_keys($mycourses);
}
// Ensure there are courseids to loop through.
if (!empty($params['courseids'])) {
list($courses, $warnings) = external_util::validate_courses($params['courseids'], $mycourses);
// Get the wikis in this course, this function checks users visibility permissions.
// We can avoid then additional validate_context calls.
$wikis = get_all_instances_in_courses('wiki', $courses);
foreach ($wikis as $wiki) {
$context = context_module::instance($wiki->coursemodule);
// Entry to return.
$module = array();
// First, we return information that any user can see in (or can deduce from) the web interface.
$module['id'] = $wiki->id;
$module['coursemodule'] = $wiki->coursemodule;
$module['course'] = $wiki->course;
$module['name'] = external_format_string($wiki->name, $context->id);
$viewablefields = [];
if (has_capability('mod/wiki:viewpage', $context)) {
list($module['intro'], $module['introformat']) = external_format_text($wiki->intro, $wiki->introformat, $context->id, 'mod_wiki', 'intro', $wiki->id);
$module['introfiles'] = external_util::get_area_files($context->id, 'mod_wiki', 'intro', false, false);
$viewablefields = array('firstpagetitle', 'wikimode', 'defaultformat', 'forceformat', 'editbegin', 'editend', 'section', 'visible', 'groupmode', 'groupingid');
}
// Check additional permissions for returning optional private settings.
if (has_capability('moodle/course:manageactivities', $context)) {
$additionalfields = array('timecreated', 'timemodified');
$viewablefields = array_merge($viewablefields, $additionalfields);
}
foreach ($viewablefields as $field) {
$module[$field] = $wiki->{$field};
}
// Check if user can add new pages.
$module['cancreatepages'] = wiki_can_create_pages($context);
$returnedwikis[] = $module;
}
}
$result = array();
$result['wikis'] = $returnedwikis;
$result['warnings'] = $warnings;
return $result;
}