Event::listen('eloquent.updated: App\Post',function (){
 dump('测试一下修改事件');
});
Route::post('/post/{id}', 'PostController@update');

 protected $listen = [
  'App\Events\PostEvent' => [
    'App\Listeners\PostListener',
   ],
 ];

php artisan event:generate //生成文件

 public function handle(PostEvent $event)
 {
  dump('测试一下修改事件');
 }

 protected $events = [
   'updated' => PostListener::class
 ];

 public static function boot() {
  parent::boot();
  
  static::updated(function($model) {
   dump('测试一下修改事件');
  });
 }

trait LogRecord
{
 //注意,必须以 boot 开头
 public static function bootLogRecord()
 {
  foreach(static::getModelEvents() as $event) {
   static::$event(function ($model){
    $model->setRemind();
   });
  }
 }


 public static function getModelEvents()
 {
  if(isset(static::$recordEvents)){
   return static::$recordEvents;
  }
  return ['updated'];
 }

 public function setRemind()
 {
  dump('记录逻辑操作');
 }
}