source: app/Http/Controllers/Auth/RegisterController.php

<?php

namespace App\Http\Controllers\Auth;

use App\Http\Controllers\Controller;
use App\Http\Controllers\Utils\UtilController;
use App\Models\Artist;
use App\Models\Organizer;
use App\Providers\RouteServiceProvider;
use App\Models\User;
use Illuminate\Foundation\Auth\RegistersUsers;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Hash;
use Illuminate\Support\Facades\Log;
use Illuminate\Support\Facades\Validator;
use Laravolt\Avatar\Avatar;
use Exception;

class RegisterController extends Controller
{
    /*
    |--------------------------------------------------------------------------
    | Register Controller
    |--------------------------------------------------------------------------
    |
    | This controller handles the registration of new users as well as their
    | validation and creation. By default this controller uses a trait to
    | provide this functionality without requiring any additional code.
    |
    */

    use RegistersUsers;

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

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

    /**
     * Get a validator for an incoming registration request.
     *
     * @param  array  $data
     * @return \Illuminate\Contracts\Validation\Validator
     */
    protected function validator(array $data)
    {
        return Validator::make($data, [
            'name' => ['required', 'string', 'max:80'],
            'email' => ['required', 'string', 'email', 'max:255', 'unique:users'],
            'password' => ['required', 'string', 'min:8', 'confirmed'],
            'account_type' => ['required', 'string', 'regex:(artist|organizer)'],
        ]);
    }

    /**
     * Create a new user instance after a valid registration.
     *
     * @param  array  $data
     * @return User|void
     */
    protected function create(array $data)
    {
        $username = strtolower(preg_replace('/\s+/', '', $data['name'])) . uniqid();
        $image_name = ($username . '-' . uniqid() . '.jpg');

        $user = User::create([
            'name' => $data['name'],
            'email' => $data['email'],
            'password' => Hash::make($data['password']),
            'username' => $username,
            'profile_picture' => $image_name,
            'type' => strtoupper($data['account_type']),
        ]);

        switch(strtolower($data['account_type'])) {
            case 'artist':
                $artist = Artist::create([
                    'user_id' => $user->id
                ]);

                $artist->user()->associate($user);

                try {
                    $artist->save();
                } catch (Exception $e) {
                    Log::error($e->getMessage());
                }
                break;
            case 'organizer':
                $organizer = Organizer::create([
                    'user_id' => $user->id
                ]);

                $organizer->user()->associate($user);

                try {
                    $organizer->save();
                } catch (Exception $e) {
                    Log::error($e->getMessage());
                }
        }

        UtilController::saveAvatarImage($image_name, $data['name']);

        return $user;
    }
}