$button = new portfolio_add_button();
    $button->set_callback_options('forum_portfolio_caller', array('discussionid' => $discussion->id), 'mod_forum');
    $button = $button->to_html(PORTFOLIO_ADD_FULL_FORM, get_string('exportdiscussion', 'mod_forum'));
    $buttonextraclass = '';
    if (empty($button)) {
        // no portfolio plugin available.
        $button = ' ';
        $buttonextraclass = ' noavailable';
    }
    echo html_writer::tag('div', $button, array('class' => 'discussioncontrol exporttoportfolio' . $buttonextraclass));
} else {
    echo html_writer::tag('div', ' ', array('class' => 'discussioncontrol nullcontrol'));
}
// groups selector not needed here
echo '<div class="discussioncontrol displaymode">';
forum_print_mode_form($discussion->id, $displaymode);
echo "</div>";
if ($forum->type != 'single' && has_capability('mod/forum:movediscussions', $modcontext)) {
    echo '<div class="discussioncontrol movediscussion">';
    // Popup menu to move discussions to other forums. The discussion in a
    // single discussion forum can't be moved.
    $modinfo = get_fast_modinfo($course);
    if (isset($modinfo->instances['forum'])) {
        $forummenu = array();
        // Check forum types and eliminate simple discussions.
        $forumcheck = $DB->get_records('forum', array('course' => $course->id), '', 'id, type');
        foreach ($modinfo->instances['forum'] as $forumcm) {
            if (!$forumcm->uservisible || !has_capability('mod/forum:startdiscussion', context_module::instance($forumcm->id))) {
                continue;
            }
            $section = $forumcm->sectionnum;