$request->user()->role 錯誤 - 試圖獲取非對象的屬性 ($request->user()->role errror - trying to get property of non-object)

問題描述

$request‑>user()‑>role 錯誤 ‑ 試圖獲取非對象的屬性 ($request‑>user()‑>role errror ‑ trying to get property of non‑object)

我正在創建一個中間件，它將處理授權說檢查角色然後授權。但是當我在做 $role = $request‑>user()‑>role;

它給了我錯誤 嘗試獲取非屬性對象。我在這裡做錯了什麼。

這是我的中間件類的摘錄

RoleMiddleware

namespace App\Http\Middleware;
use Closure;
use Illuminate\Http\Request;
use App\Http\Requests;

class RoleMiddleware
{
    public function handle($request, $next) {
    $role = $request‑>user()‑>role;

另外我想知道區別並想知道哪個最好，我應該授權使用中間件、Policy 還是門面？

感謝您的幫助，

謝謝，Sambhav

參考解法

方法 1:

There is no "best" way method to authorize users. You can use Middleware, Policies or Gate or mix them together.

In your case the problem is:

$role = $request‑>user()‑>role;

because user is not always logged in.

So you should change it like so:

$role = $request‑>user() ? $request‑>user()‑>role: 'guest';

to set guest role for not logged user and to get rid of error.

(by Kumar Sambhav Pandey、Marcin Nabiałek)

參考文件

1. $request‑>user()‑>role errror ‑ trying to get property of non‑object (CC BY‑SA 2.5/3.0/4.0)