Craft\Seomatic_MetaFieldType::prepValueFromPost PHP Метод

    public function prepValueFromPost($value)
    {
        $result = null;
        if (empty($value)) {
            $result = $this->prepValue($value);
        } else {
            $result = new Seomatic_MetaFieldModel($value);
            $result = $this->prepValue($result);
        }
        return $result;
    }