Phalcon - Quick way to expose Mongo collection as a Rest API

gistfile1.php

<?php
use Phalcon\DI\FactoryDefault,
    Phalcon\Mvc\Micro,
    Phalcon\Config\Adapter\Ini as IniConfig,
    Phalcon\Mvc\Micro\Collection as MicroCollection;

$di = new FactoryDefault();
$di->set('url', function(){
  $url = new Phalcon\Mvc\Url();
  $url->setBaseUri('/');
  return $url;
});

$di->set('mongo', function() {
  $mongo = new MongoClient();
  return $mongo->selectDB("nugs");
}, true);

$di->set('collectionManager', function(){
  return new Phalcon\Mvc\Collection\Manager();
}, true);

class RestMicro extends Phalcon\Mvc\Micro
{
  public function __construct(Phalcon\DI\FactoryDefault $di, array $collectionNames = array())
  {
    $this->setDI($di);
    foreach($collectionNames as $name)
    {
      $collection = new MicroCollection();
      $controller = ucfirst($name).'ApiController';

      if (!class_exists($controller))
      {
        $controller = 'RestApiController';
      }
      $controller = new $controller();
      $controller::$collectionName = $name;

      $collection->setHandler(new $controller());
      $collection->setPrefix('/'.$name);

      foreach($controller::$routes as $method => $routes)
      {
        foreach($routes as $path => $func)
        {
          $collection->$method($path, $func);
        }
      }

      $this->mount($collection);

      // load model classes
      require_once(dirname(__FILE__).'/models/'.ucfirst($name).'.php');


    }

  }
}

class RestApiController extends Phalcon\Mvc\Controller
{
  static public $routes = array(
    'get' => array(
      '/' => 'index',
      '/{id}' => 'show'
    ),
    'post' => array(
      '/' => 'create'
    ),
    'put' => array(
      '/{id}' => 'update'
    ),
    'delete' => array(
      '/{id}' => 'delete'
    ),
  );

  static public $collectionName;

  public function index()
  {
    if (!self::$collectionName)
    {
      $modelClass = str_replace('ApiController', '', get_class($this));
    }
    else
    {
      $modelClass = self::$collectionName;
    }
    $items = $modelClass::find();
    foreach ($items as $item)
    {
      $data[] = $item->toArray();
    }
    echo json_encode($data);
  }

  public function show()
  {

  }
  public function create()
  {

  }
  public function update()
  {

  }
  public function delete()
  {

  }
}

/*
 just pass your collection names
  you can also override the controller by creating ModelsApiController class if you want to customize methods
  class UsersApiController extends RestApiController
  {
    public function index()
    {
      echo "hi";
    }
  }
*/
$app = new RestMicro($di, array('users'));
$app->handle();