Laravel：参数 2 传递给 Illuminate\Auth\SessionGuard::__construct()

Question

我有一个应用程序，我在其中创建了一个新的守卫residents，它是UserLaravel 附带的默认类的精确副本。但是当我改变守卫时，它开始显示这个错误：
Argument 2 passed to Illuminate\Auth\SessionGuard::__construct() must be an instance of Illuminate\Contracts\Auth\UserProvider, null given, called in ...\vendor\laravel\framework\src\Illuminate\Auth\AuthManager.php on line 125

我尝试使用谷歌搜索解决方案并阅读了很多但没有任何效果。

Laravel 版本是 5.8

身份验证文件

'defaults' => [
    'guard' => 'web',
    'passwords' => 'users',
],

'guards' => [
    'web' => [
        'driver' => 'session',
        'provider' => 'users',
    ],

    'api' => [
        'driver' => 'token',
        'provider' => 'residents',
        'hash' => false,
    ],
],

'providers' => [
    'residents' => [
        'driver' => 'eloquent',
        'model' => App\ApiModels\Resident::class,
    ],
],

'passwords' => [
    'users' => [
        'provider' => 'users',
        'table' => 'password_resets',
        'expire' => 60,
    ],
],

App\ApiModels\Resident.php

namespace App\ApiModels;

use \Illuminate\Notifications\Notifiable;
use \Illuminate\Contracts\Auth\MustVerifyEmail;
use \Illuminate\Foundation\Auth\User as Authenticatable;

class Resident extends Authenticatable
{
    use Notifiable;

    /**
     * The attributes that are mass assignable.
     *
     * @var array
     */
    protected $fillable = [
        'name', 'email', 'password',
    ];

    /**
     * The attributes that should be hidden for arrays.
     *
     * @var array
     */
    protected $hidden = [
        'password', 'remember_token',
    ];

    /**
     * The attributes that should be cast to native types.
     *
     * @var array
     */
    protected $casts = [
        'email_verified_at' => 'datetime',
    ];

    /**
     * Authenticate the user
     *
     * @param   object  $request 
     * @return  array
     */
    public function _login($request)
    {
        if(\Auth::attempt([
            'email'    => $request->email,
            'password' => $request->password
        ]))
        {
            return [
                'success' => true
            ];
        }
        else
        {
            return [
                'success' => false
            ];
        }
    }
}

路由\api.php

Route::get('/login', 'Api\ResidentsController@login');

Api\ResidentsController.php

namespace App\Http\Controllers\Api;

use Illuminate\Http\Request;
use App\Http\Controllers\Controller;

/**
 * Models
 */
use App\ApiModels\Resident;

class ResidentsController extends Controller
{
    public function __construct()
    {
        /**
         * Middleware(s)
         */
        $this->middleware('auth:api', [
            'except' => [
                'login',
                'logout'
            ]
        ]);
    }
    
    public function login(Request $request)
    {
        ...

        return response()->json([
            'login_id' => $request->login_id,
            'password' => $request->password
        ]);
    }
}

Answer 1

问题发生在您的config/auth.php. 您的web守卫正在使用users未在您的providers数组中声明的提供程序。您有 2 个选项可以解决此问题（选择一个）：

1. 添加users提供者
2. 如果您不打算使用web守卫，请将其移除，然后将您的默认守卫设置为api：

'defaults' => [
    'guard' => 'api',
    'passwords' => 'residents',
],

'guards' => [
    'api' => [
        'driver' => 'token',
        'provider' => 'residents',
        'hash' => false,
    ],
],

'providers' => [
    'residents' => [
        'driver' => 'eloquent',
        'model' => App\ApiModels\Resident::class,
    ],
],

'passwords' => [
    'residents' => [
        'provider' => 'residents',
        'table' => 'password_resets',
        'expire' => 60,
    ],
],