Transactional Service Proxy

TxController.php

<?php

class TxController extends Controller
{
    public function context($id)
    {
        return new TxProxy($this->get($id), $this->get('doctrine.orm.default_entity_manager'));
    }
}

TxProxy.php

<?php

use Doctrine\ORM\EntityManager;

class TxProxy
{
    private $service;
    private $entityManager;

    public function __construct($service, EntityManager $entityManager)
    {
        $this->service = $service;
        $this->entityManager = $entityManager;
    }

    public function __call($method, $args)
    {
        $callback = array($this->service, $method);
        return $this->entityManager->transactional(function() use ($callback, $args) {
            return call_user_func_array($callback, $args);
        });
    }
}