protected function listeners()
{
$this->app->booted(function () {
CampaignWidget::saving(function ($item) {
if ($item->sort === null) {
$item->sort = CampaignWidget::where('campaign_id', $item->campaign_id)->count();
}
});
CampaignWidget::deleted(function ($item) {
CampaignWidget::where('campaign_id', $item->campaign_id)->where('sort', '>', $item->sort)->update(['sort' => \DB::raw('sort - 1')]);
});
});
}
