Symfony2 FOSUserBundle重写控制器(Controllers)

1. 创建一个子Bundle，继承FOSUserBundle，

   // src/Acme/UserBundle/AcmeUserBundle.php
   <?php
   
   namespace Acme\UserBundle;
   
   use Symfony\Component\HttpKernel\Bundle\Bundle;
   
   class AcmeUserBundle extends Bundle
   {
       public function getParent()
       {
           return 'FOSUserBundle';
       }
   }

    * Symfony2框架只允许一个Bundle有一个子Bundle，无法再创建FOSUserBundle的子Bundle。
2. 创建一个和FOSUserBundle相同名字的Controller，一种方式继承父Bundle的Controller，继承的话，不需要把父Controller的所有方法重写，如下：

   <?php
   // src/Acme/UserBundle/Controller/RegistrationController.php
   namespace Acme\UserBundle\Controller;
   
   use Symfony\Component\HttpFoundation\RedirectResponse;
   use FOS\UserBundle\Controller\RegistrationController as BaseController;
   
   class RegistrationController extends BaseController
   {
       public function registerAction()
       {
           $form = $this->container->get('fos_user.registration.form');
           $formHandler = $this->container->get('fos_user.registration.form.handler');
           $confirmationEnabled = $this->container->getParameter('fos_user.registration.confirmation.enabled');
   
           $process = $formHandler->process($confirmationEnabled);
           if ($process) {
               $user = $form->getData();
   
               /*****************************************************
                * Add new functionality (e.g. log the registration) *
                *****************************************************/
               $this->container->get('logger')->info(
                   sprintf('New user registration: %s', $user)
               );
   
               if ($confirmationEnabled) {
                   $this->container->get('session')->set('fos_user_send_confirmation_email/email', $user->getEmail());
                   $route = 'fos_user_registration_check_email';
               } else {
                   $this->authenticateUser($user);
                   $route = 'fos_user_registration_confirmed';
               }
   
               $this->setFlash('fos_user_success', 'registration.flash.user_created');
               $url = $this->container->get('router')->generate($route);
   
               return new RedirectResponse($url);
           }
   
           return $this->container->get('templating')->renderResponse('FOSUserBundle:Registration:register.html.'.$this->getEngine(), array(
               'form' => $form->createView(),
           ));
       }
   }

   * 如果不想继承FOSUserBundle的Controller类，可以直接定义一个Controller，但需要把FOSUserBundle的所有方法全部重写。