如何在laravel 5.4中获取当前用户ID

Question

我在Laravel 5.4中使用此代码来获取当前登录的用户ID

    $id = User::find(Auth::id());
    dd($id);

但我收到“Null”

Answer 1

您必须致电user()方法：

$id = \Auth::user()->id;

或者，如果您只想获得模型：

$user = \Auth::user();

Answer 2

您可以通过Auth外观访问经过身份验证的用户：

use Illuminate\Support\Facades\Auth;

// Get the currently authenticated user...

$user = Auth::user();

// Get the currently authenticated user's ID...

$id = Auth::id();

您可以通过Illuminate \ Http \ Request访问访问身份验证的用户

use Illuminate\Http\Request;
public function update(Request $request)
{
     $request->user(); //returns an instance of the authenticated user...
     $request->user()->id; // returns authenticated user id. 
}

通过Auth helper功能：

auth()->user();  //returns an instance of the authenticated user...
auth()->user()->id ; // returns authenticated user id. 

Answer 3

使用助手：

auth()->user()->id ;   // or get name - email - ...

使用外观：

\Auth::user()->id ;   // or get name - email - ...

使用DI容器：

use Illuminate\Auth\AuthManager;
class MyClass
{
    private $authManager;
    public __construct(AuthManager $authManager)
    {
        $this->authManager = $authManager;
    }
}