http://culttt.com/2014/03/03/model-presenters-laravel-4/ problems

controllers\PostController.php

<?php

use Presenters\Presenter;
use Presenters\PostPresenter;
use Repositories\Posts\PostRepository as Post;

class PostController extends BaseController {
	protected $post;
	protected $presenter;

	public function __construct(Post $post, Presenter $presenter) {
		//injected services
		$this->post = $post;
		$this->presenter = $presenter;
        }

        public function show($slug) {
		$post = $this->post->findByKey('slug', $slug);
		if($post) {
			$post = $this->presenter->model($post, new PostPresenter);
			return View::make('posts.single', compact('post'));
		}
		App::abort(404);
	}
}

presenters\BasePresenter.php

<?php namespace Presenters;

use ArrayAccess;

abstract class BasePresenter implements ArrayAccess {
    //the object to present
    protected $object;

    //Inject the object to be presented
    public function set($object) {
        $this->object = $object;
    }

    //Checks to see if the offset exists on the current object
    public function offsetExists($key) {
        return isset($this->object[$key]);
    }

    //Retrieve the key from the object as if it were an array (square brackets)
    public function offsetGet($key) {
        return $this->__get($key);
    }

    //Set the key of an object as if it were an array
    public function offsetSet($key, $value) {
        $this->object[$key] = $value;
    }

    //Unset the key of an object as if it were an array
    public function offsetUnset($key) {
        unset($this->object[$key]);
    }

    //Check to see if there's a method on the presenter, else pass through to the object
    public function __get($key) {
        if(method_exists($this, $key)) {
            return $this->{$key}();
        }
        return $this->object->$key;
    }




    //formats the date_time fields auto-created by laravel
    public function created_at() {
        return $this->object->created_at->format('dS M Y \a\t G:i');
    }

    public function updated_at() {
        return $this->object->updated_at->format('dS M Y \a\t G:i');
    }
}

presenters\Presenter.php

<?php namespace Presenters;

class Presenter {

	//Returns an instance of a model, wrapped in a presenter
	public function model(Model $model, Presentable $presenter) {
		$object = clone $presenter;
		$object->set($model);
		return $object;
	}
}