Resource bug

app\routes.php

<?php

/*
  |--------------------------------------------------------------------------
  | Application Routes
  |--------------------------------------------------------------------------
  |
  | Here is where you can register all of the routes for an application.
  | It's a breeze. Simply tell Laravel the URIs it should respond to
  | and give it the Closure to execute when that URI is requested.
  |
 */

Route::resource('/', 'HomeController');


Route::group(array('before' => 'auth'), function() {
//           Route::get('/items/destroy/{id}', 'ItemsController@destroy'); // It works
           Route::resource('/items', 'ItemsController'); // not found exception

});

controllers\ItemsController.php

<?php

class ItemsController extends BaseController {

   /**
    * Display a listing of the resource.
    *
    * @return Response
    */
   public function index() {

      $data = [
          'items' => Item::where('user_id', '=', Auth::user()->id)->get(),
      ];

      return View::make('items.index', $data);
   }

   /**
    * Show the form for creating a new resource.
    *
    * @return Response
    */
   public function create() {

      return View::make('items.create');
   }

   /**
    * Store a newly created resource in storage.
    *
    * @return Response
    */
   public function store() {
      $input = Input::all();
      $user_id = Auth::user()->id;

      $validator = Validator::make($input, ['codigo' => "required|unique:items,codigo,NULL,id,user_id,$user_id"]
      );

      if ($validator->fails()) {
         return Redirect::route('items.create')->withErrors($validator)->withInput();
      }

      $item = new Item($input);

      $item->ultimo_local = 'ainda desconhecido';
      $item->ultima_data = new DateTime();

      $user = User::find($user_id);
      $user->items()->save($item);

      return Redirect::route('items.index');
   }

   /**
    * Display the specified resource.
    *
    * @param  int  $id
    * @return Response
    */
   public function show($id) {
      //
   }

   /**
    * Show the form for editing the specified resource.
    *
    * @param  int  $id
    * @return Response
    */
   public function edit($id) {
      //
   }

   /**
    * Update the specified resource in storage.
    *
    * @param  int  $id
    * @return Response
    */
   public function update($id) {
      //
   }

   /**
    * Remove the specified resource from storage.
    *
    * @param  int  $id
    * @return Response
    */
   public function destroy($id) {
      $item = ['test' => 2];
//      $item = Item::find($id);

      return $item;
   }

}