<?php

namespace SymfonyDay\Bundle\BlogBundle\Controller;

use Symfony\Component\HttpFoundation\Response;
use Symfony\Bundle\FrameworkBundle\Controller\Controller;
use Sensio\Bundle\FrameworkExtraBundle\Configuration\Route;
use Sensio\Bundle\FrameworkExtraBundle\Configuration\Template;

class DefaultController extends Controller
{
    /**
     * @Route("/hello/{name}")
     *
     */
    public function indexAction($name)
    {
        return new Response('Hello '. $name .'!');
    }
}

				
<?php

namespace SymfonyDay\Bundle\BlogBundle\Controller;

use Symfony\Component\HttpFoundation\Response;
use Symfony\Bundle\FrameworkBundle\Controller\Controller;
use Sensio\Bundle\FrameworkExtraBundle\Configuration\Route;
use Sensio\Bundle\FrameworkExtraBundle\Configuration\Template;

class DefaultController extends Controller
{
    /**
     * @Route("/hello/{name}")
     *
     */
    public function indexAction($name)
    {
        return $this->render(
	        'SymfonyDayBlogBundle:Default:index.html.twig',
	        array('name' => $name)
	    );
    }
}

				
Use template for blog bundle controller
Use template for blog bundle controller
