Method App\Http\Controllers\Auth\RegisterController::validator does not exist - laravel

Question

I am trying to do registration of multi-user in my registration controller and used the following code and checked. But it shows me error:
Method App\Http\Controllers\Auth\RegisterController::validator does not exist.
<?php
namespace App\Http\Controllers\Auth;
use App\Admin;
use App\Manager;
use App\Http\Controllers\Controller;
use Illuminate\Support\Facades\Hash;
use Illuminate\Support\Facades\Validator;
use Illuminate\Foundation\Auth\RegistersUsers;
use Illuminate\Foundation\Validation\ValidatesRequests;
use Illuminate\Http\Request;
class RegisterController extends Controller
{
use RegistersUsers;
public function __construct()
{
$this->middleware('guest');
$this->middleware('guest:admin');
$this->middleware('guest:manager');
}
protected function createAdmin(Request $request)
{
$this->validator($request->all())->validate();
$admin = Admin::create([
'name' => $request['name'],
'email' => $request['email'],
'password' => Hash::make($request['password']),
]);
return redirect()->intended('login/admin');
}
protected function createManager(Request $request)
{
$this->validator($request->all())->validate();
$manager = Manager::create([
'name' => $request['name'],
'email' => $request['email'],
'password' => Hash::make($request['password']),
]);
return redirect()->intended('login/manager');
}
}

Answer 1

Try to add validator() function like follow:
protected function validator(array $data, $table)
{
return Validator::make($data, [
'name' => ['required', 'string', 'max:255'],
'email' => ['required', 'string', 'email', 'max:255', 'unique:'.$table],
'password' => ['required', 'string', 'min:8', 'confirmed'],
]);
}
then you can make validation like so:
$this->validator($request->all(), 'table_name')->validate();
change table_name with corresponding name.