/**
  *  Download certificate
  */
 public function downloadCertificate()
 {
     if ($cert_id = (int) $_GET['cert_id']) {
         /** @var srCertificate $cert */
         $cert = srCertificate::find($cert_id);
         if ($cert->getUserId() == $this->user->getId() && $cert->getDefinition()->getDownloadable()) {
             parent::downloadCertificate();
         }
     }
 }
 /**
  *
  */
 public function __construct()
 {
     parent::__construct();
     $this->tpl->setTitle($this->pl->txt('administrate_certificates'));
 }