在Laravel 5.3中的父构造函数中访问Auth [复制]

Question

This question already has an answer here:

• Laravel 5.3 auth check in constructor returning false 3 answers

Im working on an app in Laravel 5.3. I have created an AppController. I would like for all of my controllers to extend AppController so that they all share a few common properties and methods.

Given the below 2 implementations below, my intention is to set the current user to $this->user when AppController is constructed so it will be available to all controllers extending AppController.

I expect that when I call \App\Http\Controllers\User\PermissionController@test I should get my user object dumped twice. Once when AppController is initialized, and again when PermissionController@test is called.

However, inside of AppController __construct(), $this->user is always NULL while PermissionController@test dumps the user as expected.

AppController:

<?php

    namespace App\Http\Controllers\App;

    use App\Http\Controllers\Controller;

    class AppController extends Controller
    {
        /**
         * The current user when logged in
         * @var \User
         */
        protected $user;

        public function __construct()
        {
            if(\Auth::check() ) {
                $this->user = \Auth::user();
            }
            var_dump($this->user);
        }
    }

PermissionController:

<?php

    namespace App\Http\Controllers\User;

    use App\Http\Controllers\App\AppController;

    class PermissionController extends AppController
    {
        public function test()
        {
            if(\Auth::check() ) {
                // Do something
                $this->user = \Auth::user() ;
            }
            var_dump($this->user);
        } 
    }

If it matters, I'm using https://github.com/Adldap2/Adldap2-Laravel to auth against Active Directory.

Clearly I'm misunderstanding something hear. Why does AppController __construct() not dump the user?

</div>

Answer 1

This is because of changes in Laravel 5.3. If you need to use Auth in constructor you need to do it like so:

public function __construct()
{
     $this->middleware(function ($request, $next) {
             if(\Auth::check() ) {
                $this->user = \Auth::user();
            }
            var_dump($this->user);

            return $next($request);
        });
}

This change was described in upgrade guide to Laravel 5.3 - https://laravel.com/docs/5.3/upgrade#upgrade-5.3.0 look at section Session In The Constructor