Runtime controller extension

ControllerExtendableListener.php

<?php

namespace Edimotive\SaloneBundle\Service;

use Symfony\Component\HttpKernel\Event\FilterResponseEvent;
use Symfony\Component\HttpKernel\Event\FilterControllerEvent;
use Edimotive\SaloneBundle\Service\ControllerExtendableInterface;
use Symfony\Bundle\FrameworkBundle\Controller\ControllerResolver;
use Symfony\Component\DependencyInjection\ContainerInterface;
use Edimotive\SaloneBundle\Service\CustomControllerManager;
use Symfony\Component\DependencyInjection\ContainerAwareInterface;

class ControllerExtendableListener
{    
    protected $container;
    
    protected $manager;

    public function __construct(ContainerInterface $container, CustomControllerManager $manager)
    {
        $this->container = $container;
        $this->manager = $manager;
    }
    
    public function onKernelController(FilterControllerEvent $event)
    {
        $controllers = $event->getController();
        
        if (!is_array($controllers)) {
            return;
        }
        
        $controller = $controllers[0];
        $method     = $controllers[1];
        
        if (!$controller instanceof ControllerExtendableInterface) {
            return;
        }
        
        $name = $event->getRequest()->get($controller->getParameterName());
        
        $customController = $this->manager->getController($name, $method);
        
        if (null === $customController || !$customController instanceof ContainerAwareInterface) {
            return;
        }
        
        $customController->setContainer($this->container);
        $event->setController(array($customController, $method));
    }
}

CustomControllerManager.php

<?php

namespace Edimotive\SaloneBundle\Service;

class CustomControllerManager
{    
    protected $customControllers;

    public function __construct($customControllers = array())
    {
        $this->customControllers = $customControllers;
    }
    
    public function getController($name, $method)
    {
        $customControllers = $this->customControllers;
        
        if (array_key_exists($name, $customControllers)) {
            if (class_exists($customControllers[$name])) {
                $controller = new $customControllers[$name];          
                if (method_exists($controller, $method)) {
                    return $controller;
                }
            }
        }
        
        return null;
    }
}

services.yml

parameters:
  custom_controllers:
    custom_controller: Acme\MyBundle\Controller\MyController
    
services:          
  acme.controller_extendable:
      class:     Acme\MyBundle\Service\ControllerExtendableListener
      arguments: ["@service_container", "@omniauto.custom_controller_manger"]
      tags:
          - { name: kernel.event_listener, event: kernel.controller }
  acme.custom_controller_manger:
      class:     Acme\MyBundle\Service\CustomControllerManager
      arguments: [%custom_controllers%]