Gc\View\Model::fromId PHP Method

    public static function fromId($viewId)
    {
        $viewTable = new Model();
        $row = $viewTable->select(array('id' => (int) $viewId));
        $current = $row->current();
        $viewTable->events()->trigger(__CLASS__, 'before.load', $viewTable);
        if (!empty($current)) {
            $viewTable = self::fromArray((array) $current);
            $viewTable->events()->trigger(__CLASS__, 'after.load', $viewTable);
            return $viewTable;
        } else {
            $viewTable->events()->trigger(__CLASS__, 'after.load.failed', $viewTable);
            return false;
        }
    }

 /**
  * Send a file to the browser
  *
  * @return \Zend\Stdlib\ResponseInterface
  */
 public function downloadAction()
 {
     $viewId = $this->getRouteMatch()->getParam('id', null);
     if (!empty($viewId)) {
         $view = View\Model::fromId($viewId);
         if (empty($view)) {
             $this->flashMessenger()->addErrorMessage('This view can not be download');
             return $this->redirect()->toRoute('development/view/edit', array('id' => $viewId));
         }
         $content = $view->getContent();
         $filename = $view->getIdentifier() . '.phtml';
     } else {
         $views = new View\Collection();
         $children = $views->getViews();
         $zip = new ZipArchive();
         $tmpFilename = tempnam(sys_get_temp_dir(), 'zip');
         $res = $zip->open($tmpFilename, ZipArchive::CREATE);
         if ($res === true) {
             foreach ($children as $child) {
                 $zip->addFromString($child->getIdentifier() . '.phtml', $child->getContent());
             }
             $zip->close();
             $content = file_get_contents($tmpFilename);
             $filename = 'views.zip';
             unlink($tmpFilename);
         }
     }
     if (empty($content) or empty($filename)) {
         $this->flashMessenger()->addErrorMessage('Can not save views');
         return $this->redirect()->toRoute('development/view');
     }
     $headers = new Headers();
     $headers->addHeaderLine('Pragma', 'public')->addHeaderLine('Cache-control', 'must-revalidate, post-check=0, pre-check=0')->addHeaderLine('Cache-control', 'private')->addHeaderLine('Expires', -1)->addHeaderLine('Content-Type', 'application/octet-stream')->addHeaderLine('Content-Transfer-Encoding', 'binary')->addHeaderLine('Content-Length', strlen($content))->addHeaderLine('Content-Disposition', 'attachment; filename=' . $filename);
     $response = $this->getResponse();
     $response->setHeaders($headers);
     $response->setContent($content);
     return $response;
 }