Laravel Saving event in case of bulk-insert - php

Question

Iam bulk-inserting large database in chunks with this command:
DB::table($table)->insert($chunk);
But want I want is before actual insert operation, I want to be able to modify $chunk array for each table to add/remove certain attributes going into database. In order to do so, I setup saving event in my model:
public static function boot()
{
parent::boot();
static::saving(function ($model) {
Log::info('saving');
return true;
});
}
However, it seems events don't work for Model::insert operations.
Can anybody tell how can I achieve this ?
PS: I can't use save() (though saving event would work with it) method as it would only allow me to save one record at a time whereas I need to do bulk insert of each chunk.
Thanks

Answer 1

In this case you have to create your own Event/Listner.
Something like this :
php artisan make:event SomeEventName
//App\Events\SomeEventName
class SomeEventName extends Event
{
use SerializesModels;
public $chunk;
/**
* Create a new event instance.
*
* #return void
*/
public function __construct(&$chunk)
{
$this->chunk = &$chunk;
}
}
Then you make your listener (you can create a separate file according to laravel docs) or just put it on boot Model method
\Event::listen('App\Events\SomeEventName', function($event) {
$event->chunk = ['hello new world']; // this will replace the old chunk
});
and then use it like this :
$chunk = ['hello old world'];
event(new App\Events\SomeEventName($chunk));
dd($chunk);
DB::table($table)->insert($chunk);