Simple presenter pattern for Symfony2/Twig. Really useful to get some view logic out of the models and views into its own separate space.

BasePresenter.php

<?php

namespace Acme\DemoBundle\Presenter;

class BasePresenter
{
  protected $subject;
	
  public function __construct($subject)
  {
    $this->subject = $subject;
  }
	
  public function __call($methodName, $arguments)
  {
    $methods = get_class_methods($this->subject);
    if (in_array($methodName , $methods)) {
      return call_user_func_array(array($this->subject, $methodName), $arguments);
    } else {
      throw new \Exception("No such method ".$methodName);
    }
  }
}

DefaultController.php

<?php

namespace Acme\DemoBundle\Controller;

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

use Acme\DemoBundle\Entity\Person;
use Acme\DemoBundle\Presenter\PersonPresenter;

class DefaultController extends Controller
{
  /**
   * @Route("/hello/{name}")
   * @Template()
   */
  public function indexAction($name)
  {
    $person = new Person();
    $person->setFirstName('Michael');
    $person->setLastName('Sauter');
    return array('person' => new PersonPresenter($person));
  }
}

gistfile1.txt

-

index.html.twig

Hello {{ person.fullName }}! ({{ person.lastName }})
{# Output: "Hello Mr. Michael Sauter! (Sauter)" #}

Person.php

<?php

namespace Acme\DemoBundle\Entity;

class Person {
  // your model here
}

PersonPresenter.php

<?php

namespace Acme\DemoBundle\Presenter;

class PersonPresenter extends BasePresenter
{
  public function getFullName()
  {
    return $this->getFirstName().' '.$this->getLastName();
  }
	
  public function getFirstName()
  {
    return 'Mr. '.$this->subject->getFirstName();
  }
}