Xboard/app/Providers/EventServiceProvider.php

<?php

namespace App\Providers;

use App\Models\User;
use App\Observers\UserObserver;
use Illuminate\Foundation\Support\Providers\EventServiceProvider as ServiceProvider;
use Illuminate\Support\Facades\Event;

class EventServiceProvider extends ServiceProvider
{
    /**
     * 事件监听器映射
     * @var array<string, array<int, class-string>>
     */
    protected $listen = [
    ];

    /**
     * 注册任何事件
     * @return void
     */
    public function boot()
    {
        parent::boot();

        // 注册用户模型观察者
        User::observe(UserObserver::class);
    }
}