public function onlyFillable(array $input)
    {
        $result = array_intersect_key($input, array_flip($this->modelInstance->getFillable()));

        foreach ($this->avoidEmptyUpdate as $avoid) {
            if (array_key_exists($avoid, $result) && empty($result[$avoid])) {
                unset($result[$avoid]);
            }
        }

        return $result;
    }