Laravel 5：如何在路由中使用 Auth::user()->id

Question

我尝试使用php Laravel 框架创建一个应用程序。当我在路由文件中使用Auth::user()->id 时，我收到错误“试图获取非对象的属性”。那么我该如何解决呢？

这是我的路由文件

`

<?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 controller to call when that URI is requested.
|
*/
Route::get('/', 'HomeController@index');
Route::controllers([
    'auth' => 'Auth\AuthController',
    'password' => 'Auth\PasswordController',
]);
$common_variable=App\MyModel::where('site_id',Auth::user()->id)->count();
view()->share(compact('common_variable'));

`