Eccube\Controller\Install\InstallController::step4 PHP Метод

    public function step4(InstallApplication $app, Request $request)
    {
        $form = $app['form.factory']->createBuilder('install_step4')->getForm();
        $sessionData = $this->getSessionData($request);
        if (empty($sessionData['database'])) {
            $config_file = $this->config_path . '/database.yml';
            $fs = new Filesystem();
            if ($fs->exists($config_file)) {
                // すでに登録されていた場合、登録データを表示
                // データベース設定
                $config = Yaml::parse(file_get_contents($config_file));
                $database = $config['database'];
                $sessionData['database'] = $database['driver'];
                if ($database['driver'] != 'pdo_sqlite') {
                    $sessionData['database_host'] = $database['host'];
                    $sessionData['database_port'] = $database['port'];
                    $sessionData['database_name'] = $database['dbname'];
                    $sessionData['database_user'] = $database['user'];
                    $sessionData['database_password'] = $database['password'];
                }
            }
        }
        $form->setData($sessionData);
        if ($this->isValid($request, $form)) {
            return $app->redirect($app->url('install_step5'));
        }
        return $app['twig']->render('step4.twig', array('form' => $form->createView(), 'publicPath' => '..' . RELATIVE_PUBLIC_DIR_PATH . '/'));
    }