laravel call to undefined method Auth guard - laravel

Question

i want to prevent the login after register in Laravel 5.5, I already did this by commenting a line:
public function register(Request $request)
{
$this->validator($request->all())->validate();
event(new Registered($user = $this->create($request->all())));
// $this->guard()->login($user);
return $this->registered($request, $user)
?: redirect($this->redirectPath());
}
i override it in RegisterController.php
i got this error:
Call to undefined method Illuminate\Auth\AuthenticationException::guard()
$guard = array_get($exception->guard(),0);
switch ($guard) {
case 'admin':
return redirect()->guest(route('admin.login'));
break;
default:
return redirect()->guest(route('login'));
break;
}
Here is the content of my config/auth:
<?php
return [
'defaults' => [
'guard' => 'web',
'passwords' => 'users',
],
'guards' => [
'web' => [
'driver' => 'session',
'provider' => 'users',
],
'admin' => [
'driver' => 'session',
'provider' => 'admins',
],
'api' => [
'driver' => 'token',
'provider' => 'users',
],
],
'providers' => [
'users' => [
'driver' => 'eloquent',
'model' => App\User::class,
],
'admins' => [
'driver' => 'eloquent',
'model' => App\Admin::class,
],
],
'passwords' => [
'users' => [
'provider' => 'users',
'table' => 'password_resets',
'expire' => 60,
],
'admins' => [
'provider' => 'admins',
'table' => 'password_resets',
'expire' => 60,
],
],
];
i have enabled multi-auth system which is i have an admin login and a user login, what i wan't is to disable the login after register in my user page.

Answer 1

To check guard in the exception can do something like this:
return redirect(route(auth()->guard('admin')->check() ? 'admin.login' : 'login'));
Also, use auth() helper or Auth:: facade in the RegisterController#register if you're trying to override the method:
auth()->guard('admin')->login($user);