如何使用命令在laravel中创建观察者

// app/Models/User.php
namespace App\Models;

use Illuminate\Foundation\Auth\User as Authenticatable;
use Illuminate\Notifications\Notifiable;

class User extends Authenticatable
{
    use Notifiable;

    // ...
}

// app/Events/UserRegistered.php
namespace App\Events;

use App\Models\User;
use Illuminate\Broadcasting\Channel;
use Illuminate\Broadcasting\InteractsWithSockets;
use Illuminate\Broadcasting\PresenceChannel;
use Illuminate\Broadcasting\PrivateChannel;
use Illuminate\Contracts\Broadcasting\ShouldBroadcast;
use Illuminate\Foundation\Events\Dispatchable;
use Illuminate\Queue\SerializesModels;

class UserRegistered implements ShouldBroadcast
{
    use Dispatchable, InteractsWithSockets, SerializesModels;

    public $user;

    public function __construct(User $user)
    {
        $this->user = $user;
    }

    public function broadcastOn()
    {
        return new PrivateChannel('channel-name');
    }
}

// app/Http/Controllers/Auth/RegisterController.php
namespace App\Http\Controllers\Auth;

use App\Events\UserRegistered;
use App\Http\Controllers\Controller;
use App\Models\User;
use Illuminate\Foundation\Auth\RegistersUsers;
use Illuminate\Support\Facades\Hash;
use Illuminate\Support\Facades\Validator;

class RegisterController extends Controller
{
    use RegistersUsers;

    public function register(Request $request)
    {
        // 验证和创建用户的逻辑...

        $user = User::create([
            'name' => $request->name,
            'email' => $request->email,
            'password' => Hash::make($request->password),
        ]);

        event(new UserRegistered($user));

        return redirect('/home')->with('success', '注册成功！');
    }
}