How pass 'templating' component for service as argument? - symfony

Question

I have a method in 'DynamicList' service that should return a select filled with dynamic data, but i'm getting "circular reference":
YML:
parameters:
my.dynamic_list.class: My\DynamicListBundle\Service\DynamicList
services:
my.dynamic_list:
class: %my.dynamic_list.class%
arguments: ['#doctrine.orm.default_entity_manager','#templating']
Class:
<?php
namespace My\DynamicListBundle\Service;
use Doctrine\ORM\EntityManager;
use Symfony\Bundle\FrameworkBundle\Templating\EngineInterface;
class DynamicList
{
private $em;
private $templating;
public function __construct(
EntityManager $em,
EngineInterface $templating
) {
$this->em = $em;
$this->templating = $templating;
}
public function getSelect($slug)
{
$dynamic_list = $this->em
->getRepository('MyDynamicListBundle:DynamicList')
->findOneBy(array(
"slug" => $slug
));
return $this->templating->render('MyComponentsCoreBundle::Templates/DynamicList/combo.html.twig', array(
'dl' => $dynamic_list
));
}
}
I guess i don't need to put here the twig content: the problema occurs before.
Last, the error i'm getting:
Circular reference detected for service "my.dynamic_list", path: "my.dynamic_list -> templating -> twig". (500 Internal Server Error - ServiceCircularReferenceException)
What's the proper way to get templating component working in my service?

Answer 1

Well, I found a workaround but I don't if is the best way:
<?php
namespace My\DynamicListBundle\Service;
use Doctrine\ORM\EntityManager;
use Symfony\Bundle\FrameworkBundle\Templating\EngineInterface;
class DynamicList
{
private $em;
private $templating;
public function __construct(
EntityManager $em
) {
$this->em = $em;
}
public function init(
EngineInterface $templating
) {
$this->templating = $templating;
}
public function getSelect($slug)
{
$dynamic_list = $this->em
->getRepository('MyDynamicListBundle:DynamicList')
->findOneBy(array(
"slug" => $slug
));
return $this->templating->render('MyComponentsCoreBundle::Templates/DynamicList/combo.html.twig', array(
'dl' => $dynamic_list
));
}
}
So, in controller, I call 'init()' to pass 'templating':
$dl_service = $this->get('my.dynamic_list');
$dl_service->init($this->container->get('templating'));