Some Symfony controller code rendering a blog article using a Twig template - http://www.symfonycentral.com

ArticleController.php

<?php
# src/MyCompany/BlogBundle/Controller/ArticleController.php
namespace MyCompany\BlogBundle\Controller;

use Symfony\Bundle\FrameworkBundle\Controller\Controller;

class ArticleController extends Controller
{
    public function viewAction($id)
    {
        $article = /* build article from model in here */;

        return $this->render('MyCompanyBlogBundle:Article:view.html.twig', 
                             array('article' => $article->getBody()));
    }
}