如文档中所述，laravel 不会在批量更新/插入/删除时触发事件。 https://laravel.com/docs/5.8/eloquent#events
它为此使用了 Builder，并且不会触发事件。
例如，有没有办法在大规模更新后仍然可以触发事件？我只需要查询生成器自己提取所需的信息（日志目的）。
【问题讨论】：
这实际上是可能的，但是您必须扩展 Eloquent 构建器，覆盖更新/插入方法并将事件发送到那里。 一直在玩它...需要工作，但基本思想如下：
class Test extends Model
{
protected $guarded = [];
public $dispatchesEvents = [
'saved' => SavedTest::class
];
/**
* INCLUDE this as a trait in your model.
* Overwrite the eloquentBuilder.
*
* @param \Illuminate\Database\Query\Builder $query
* @return \Illuminate\Database\Eloquent\Builder|static
*/
public function newEloquentBuilder($query)
{
return new TestBuilder($query);
}
}
扩展 eloquent builder...
class TestBuilder extends Builder
{
/**
* Update a record in the database and fire event.
*
* @param array $values
* @return int
*/
public function update(array $values)
{
// normal eloquent behavior.
$result =$this->toBase()->update($this->addUpdatedAtColumn($values));
/*
* Fire event.
*/
if($result){
if( $event = Arr::get($this->model->dispatchesEvents,'saved')){
// at the attributes.
$this->model->fill($this->addUpdatedAtColumn($values));
$queryBuilder =$this->toBase();
event(new $event($this->model,$queryBuilder));
}
}
}
public function insert(array $values)
{
// same idea..
}
}
事件类：
class SavedTest
{
use SerializesModels;
public $model;
public $query;
/**
* Create a new event instance.
*
* @return void
*/
public function __construct($model,$query =null)
{
$this->model = $model;
$this->query = $query;
}
}
听者。
class SavedTestEvent
{
/**
* Create the event listener.
*
*
*/
public function __construct()
{
}
/**
* Handle the event.
*
* @param object $event
* @return void
*/
public function handle($event)
{
// The model , with the attributes.
dump($event->model);
// the query builder , you could extract the wheres or whatever to build your own log for it.
dump($event->query);
}
}
【讨论】：
@Paolo 在批处理请求中不会归档您必须对单个记录执行操作的事件.. 就像
Analytic::where('id', '>', 100)->get()->each(function($analytic) {
$analytic->delete();
});
【讨论】：