Eloquent attach/detach/sync fires any event?
Laravel 5.8 now fires events on ->attach()
Check out: https://laravel.com/docs/5.8/releases
And search for: Intermediate Table / Pivot Model Events
https://laracasts.com/discuss/channels/eloquent/eloquent-attach-which-event-is-fired?page=1
No, there are no relation events in Eloquent. But you can easily do it yourself (Given for example Ticket belongsToMany Component
relation):
// Ticket model
use App\Events\Relations\Attached;
use App\Events\Relations\Detached;
use App\Events\Relations\Syncing;
// ...
public function syncComponents($ids, $detaching = true)
{
static::$dispatcher->fire(new Syncing($this, $ids, $detaching));
$result = $this->components()->sync($ids, $detaching);
if ($detached = $result['detached'])
{
static::$dispatcher->fire(new Detached($this, $detached));
}
if ($attached = $result['attached'])
{
static::$dispatcher->fire(new Attached($this, $attached));
}
}
event object as simple as this:
<?php namespace App\Events\Relations;
use Illuminate\Database\Eloquent\Model;
class Attached {
protected $parent;
protected $related;
public function __construct(Model $parent, array $related)
{
$this->parent = $parent;
$this->related = $related;
}
public function getParent()
{
return $this->parent;
}
public function getRelated()
{
return $this->related;
}
}
then a basic listener as a sensible example:
// eg. AppServiceProvider::boot()
$this->app['events']->listen('App\Events\Relations\Detached', function ($event) {
echo PHP_EOL.'detached: '.join(',',$event->getRelated());
});
$this->app['events']->listen('App\Events\Relations\Attached', function ($event) {
echo PHP_EOL.'attached: '.join(',',$event->getRelated());
});
and usage:
$ php artisan tinker
>>> $t = Ticket::find(1);
=> <App\Models\Ticket>
>>> $t->syncComponents([1,3]);
detached: 4
attached: 1,3
=> null
Of course you could do it without creating Event objects, but this way is more convenient, flexible and simply better.
Steps to solve your problem:
- Create custom BelongsToMany relation
- In BelongsToMany custom relation override attach, detach, sync and updateExistingPivot methods
- In overriden method dispatch desired events.
- Override belongsToMany() method in Model and return your custom relation not default relation
and that's it. I created package that already doing that: https://github.com/fico7489/laravel-pivot