Sync morphToMany

laravel.sync.morphToMany.php

    /**
     * Sync morphToMany
     *
     * @param morphToMany $morphToMany
     * @param array $ids
     * @return array
     */
    public static function syncMorphToMany($morphToMany, $ids)
    {
        $changes = [
            'attached' => [],
            'detached' => [],
            // 'updated' => [],
        ];

        $morphToMany->get()->each(function ($item) use (&$ids) {
            if (in_array($item->id, $ids)) {
                unset($ids[array_search($item->id, $ids)]);
            } else {
                $changes['detached'][] = $item->id;
                $item->pivot->delete();
            }
        });
        if (count($ids)) {
            $changes['attached'] = $ids;
            $morphToMany->attach($ids);
        }

        return $changes;
    }