public function run()
    {
        if (!$this->accept()) {
            return false;
        }

        $course = Course::current();

        $pathes = Request::get('path');
        $pathes = is_array($pathes) ? $pathes : array($pathes);

        $ids = array();
        foreach ($pathes as $path) {
            $doc = Document::get_by_path($course, $path);
            if ($doc) {
                $ids[] = $doc->get_id();
            }
        }
        if (empty($ids)) {
            return false;
        }

        $user = new \Portfolio\User();
        $user->email = Chamilo::user()->email();

        $artefact = new Portfolio\Artefact();
        $artefact->url = Portfolio::download_url($ids);

        $portfolio = $this->get_portfolio();
        $result = $portfolio->send($user, $artefact);
        return $result;
    }