Ouzo\Helper\ModelFormBuilder::_mergeAttributes PHP Метод

    private function _mergeAttributes($attributes, $options)
    {
        if (isset($options['class']) && isset($attributes['class'])) {
            $options['class'] = Joiner::on(' ')->skipNulls()->join(array($options['class'], $attributes['class']));
        }
        return array_merge($attributes, $options);
    }