Add MEDIAL "Dashboard" link to course menu

local_helixmedia_lib.php

// This function can be added to the end of local/helixmedia/lib.php

// Add MEDIAL "Dashboard" link to course menu
function local_helixmedia_extend_navigation_course($parentnode, $course, $context) {

    //if ($settingnode = $parentnode->find('courseadmin', navigation_node::TYPE_COURSE)) {
        global $CFG;
        require_once($CFG->dirroot.'/mod/helixmedia/lib.php');
        $preid = helixmedia_preallocate_id();
        $name = get_string('pluginname', 'helixmedia');
        $url = new moodle_url('/mod/helixmedia/launch.php',
            array('type' => '3', 'l' => $preid, 'course' => $PAGE->course->id,
                'ret' => base64_encode(curpageurl()) ));
        $navnode = navigation_node::create(
            $name,
            $url,
            navigation_node::NODETYPE_LEAF,
            'medial',
            'medial',
            new pix_icon('i/edit', $name)
        );
        if ($PAGE->url->compare($url, URL_MATCH_BASE)) {
            $navnode->make_active();
        }
        //$settingnode->add_node($navnode);
        $parentnode->add_node($navnode);
    //}
}