Building Testable Applications using the Repository Pattern - http://www.slashnode.com/the-repository-pattern/

PostController.php

<?php namespace Acme\Controllers;
 
use Acme\Storage\PostRepositoryInterface as PostRepository;
use Acme\Models\Post;
 
class PostController extends BaseController {
  
  private $postRepository;
  
  // notice that our controller now expects PostRepositoryInterface to be injected
  // during instantiation
  public function __construct(PostRepository $postRepository)
  {
    $this->postRepository = $postRepository;
  }
  
  public function index()
  {
    // instead of using the model class directly, we use the PostRepositoryInterface 
    // implementor
    $posts = $this->postRepository->paginate(20);
    return View::make('post.index', compact('posts'));
  }
  
  public function show($id)
  {
    $post = $this->postRepository->findOrFail($id);
    return View::make('post.show', compact('post'));
  }
  
  // ... etc
  
}