如何在laravel 6.*或更高版本中使用3/4用户名？

php artisan make:controller Auth\CustomAuthController

namespace App\Http\Controllers\Auth;

use App\Http\Controllers\Controller;
use Illuminate\Foundation\Auth\AuthenticatesUsers;
use Illuminate\Foundation\Auth\RegistersUsers;
use Illuminate\Support\Facades\Hash;
use Illuminate\Support\Facades\Validator;
use Illuminate\Http\Request;
use App\User;

class CustomAuthController extends Controller
{
    use AuthenticatesUsers, RegistersUsers;

    protected $redirectTo = '/home';

    public function __construct()
    {
        $this->middleware('guest')->except('logout');
    }

    public function showRegistrationForm()
    {
        return view('auth.register');
    }

    public function register(Request $request)
    {
        $this->validator($request->all())->validate();

        $user = $this->create($request->all());

        $this->guard()->login($user);

        return $this->registered($request, $user)
                        ?: redirect($this->redirectPath());
    }

    protected function validator(array $data)
    {
        return Validator::make($data, [
            'name' => ['required', 'string', 'max:255'],
            'username' => ['required', 'string', 'max:255', 'unique:users'],
            'email' => ['required', 'string', 'email', 'max:255', 'unique:users'],
            'password' => ['required', 'string', 'min:8', 'confirmed'],
        ]);
    }

    protected function create(array $data)
    {
        return User::create([
            'name' => $data['name'],
            'username' => $data['username'],
            'email' => $data['email'],
            'password' => Hash::make($data['password']),
        ]);
    }
}

'providers' => [
    'users' => [
        'driver' => 'eloquent',
        'model' => App\User::class,
        'username' => 'username', // 修改为username
    ],
],

<div class="form-group">
    <label for="username">Username</label>
    <input id="username" type="text" class="form-control" name="username" value="{{ old('username') }}" required autofocus>
    @error('username')
        <span class="invalid-feedback" role="alert">
            <strong>{{ $message }}</strong>
        </span>
    @enderror
</div>

use App\Http\Controllers\Auth\CustomAuthController;

Route::get('register', [CustomAuthController::class, 'showRegistrationForm'])->name('register');
Route::post('register', [CustomAuthController::class, 'register']);
Route::get('login', [CustomAuthController::class, 'showLoginForm'])->name('login');
Route::post('login', [CustomAuthController::class, 'login']);
Route::post('logout', [CustomAuthController::class, 'logout'])->name('logout');