ForkCMS\Bundle\InstallerBundle\Form\Handler\DatabaseHandler::process PHP Метод

    public function process(Form $form, Request $request)
    {
        if (!$request->isMethod('POST')) {
            return false;
        }
        $form->handleRequest($request);
        if ($form->isValid()) {
            return $this->processValidForm($form, $request);
        }
        return false;
    }

 public function step4Action(Request $request)
 {
     $this->checkInstall();
     // show database form
     $form = $this->createForm(new DatabaseType(), $this->getInstallationData($request));
     $handler = new DatabaseHandler();
     if ($handler->process($form, $request)) {
         return $this->redirect($this->generateUrl('install_step5'));
     }
     return $this->render('ForkCMSInstallerBundle:Installer:step4.html.twig', array('form' => $form->createView()));
 }