protected function _renderScriptTags() { if ($this->_checkProcessing() === false) { return parent::_renderScriptTags(); } if (count($this->getJavascriptFiles()) == 0) { return ''; } $scriptsMinifyUrl = implode(',', $this->getJavascriptFiles()); $this->clearJavascriptFiles(); parent::addJavascriptFile('/minify/?f=' . $scriptsMinifyUrl); return parent::_renderScriptTags(); }