Laravel UI login user with another field

Question

I use Laravel UI for authentication. In my user table, I have a field called telephone. Can I use to log in the user with that telephone and password with Laravel UI Authentication? I tried to change the contents in App/Http/Controllers/Auth/LoginController.php but couldn't figure out how this works. Really appreciate it if somebody could help. Thanks.

App/Http/Controllers/Auth/LoginController.php,

namespace App\Http\Controllers\Auth;

use App\Http\Controllers\Controller;
use App\Providers\RouteServiceProvider;
use Illuminate\Foundation\Auth\AuthenticatesUsers;

class LoginController extends Controller
{
    /*
    |--------------------------------------------------------------------------
    | Login Controller
    |--------------------------------------------------------------------------
    |
    | This controller handles authenticating users for the application and
    | redirecting them to your home screen. The controller uses a trait
    | to conveniently provide its functionality to your applications.
    |
    */

    use AuthenticatesUsers;

    /**
     * Where to redirect users after login.
     *
     * @var string
     */
    protected $redirectTo = RouteServiceProvider::REDIRECT;

    /**
     * Create a new controller instance.
     *
     * @return void
     */
    public function __construct()
    {
        $this->middleware('guest')->except('logout');
    }
}

Answer 1

You can put this on your LoginController to override the Laravel default.

public function username()
{
    return 'telephone';
}