public function renderActions()
    {
        $str = '';
        if(count($this->buttons)) {
            foreach($this->buttons as $button) {
                $str .= Html::a($button['text'], $button['url'], $button['options']);
            }
        }
        if($str)
            return "<div class=\"table-actions\">\n
                        <label class=\"pull-left\">Apply action:</label>\n
                        {$str}
                    </div>\n";
    }