raoul2000\workflow\base\StatusIdConverter::toModelAttribute PHP Метод

    public function toModelAttribute($id)
    {
        if ($id === null) {
            $id = self::VALUE_NULL;
        }
        if (!array_key_exists($id, $this->_map)) {
            throw new Exception('Conversion from SimpleWorkflow failed : no key found for id = ' . $id);
        }
        $value = $this->_map[$id];
        return $value === self::VALUE_NULL ? null : $value;
    }