模型事件几种用法

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

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

php artisan event:generate  //生成文件Copy

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

    public static function boot() {
        parent::boot();

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

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');
    }
}Copy

• creating - 对象已经 ready 但未写入数据库
• created - 对象已经写入数据库
• updating - 对象已经修改但未写入数据库
• updated - 修改已经写入数据库
• saving - 对象创建或者已更新但未写入数据库
• saved - 对象创建或者更新已经写入数据库
• deleting - 删除前
• deleted - 删除后
• restoring - 恢复软删除前
• restored - 恢复软删除后Copy