Symfony 3.4重写FOSUserBundle注册控制器时自动注入服务失败

The error you're hitting occurs because Symfony's autowiring can't automatically map the FactoryInterface dependency required by the parent RegistrationController. To fix this, we just need to explicitly alias that interface to the correct FOSUserBundle service.

Here's a step-by-step solution:

1. Update your services configuration (typically in app/config/services.yml)
   Add an alias that tells Symfony which concrete service to use for the interface:

   services:
       # ... keep your existing service definitions
   
       # Map the FactoryInterface to the registration form factory service
       FOS\UserBundle\Form\Factory\FactoryInterface:
           alias: fos_user.registration.form.factory
   

2. Ensure autowiring is enabled for your controller
   If you haven't already, enable autowiring for your AppBundle controllers to let Symfony handle dependency injection correctly:

   services:
       AppBundle\Controller\:
           resource: '../../src/AppBundle/Controller'
           autowire: true
           public: true
           tags: ['controller.service_arguments']
   

3. Double-check your controller code
   Your existing RegistrationController setup looks correct, but let's confirm it's properly structured:

   // src/AppBundle/Controller/RegistrationController.php
   namespace AppBundle\Controller;
   
   use FOS\UserBundle\Controller\RegistrationController as BaseController;
   use Symfony\Component\HttpFoundation\Request;
   
   class RegistrationController extends BaseController
   {
       public function registerAction(Request $request)
       {
           $response = parent::registerAction($request);
           // Add your custom logic here (like post-registration actions)
           return $response;
       }
   }
   

4. Confirm your bundle inheritance
   Your AppBundle.php is correctly set to inherit from FOSUserBundle, so that part is good to go:

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

Finally, clear your Symfony cache to apply all the configuration changes:

php bin/console cache:clear

This should resolve the autowire error by explicitly telling Symfony which service to inject when the FactoryInterface is requested.

内容的提问来源于stack exchange，提问作者Marco Koopman