Неправильно формируется ссылка - Общие вопросы веб разработки

$prod_url = JURI::root(). JRoute::_('index.php?option=com_virtuemart&view=productdetails&virtuemart_product_id=' . $product->virtuemart_product_id . '&virtuemart_category_id=' . $product->virtuemart_category_id, true);
$prod_url = str_replace(array('//', 'http:/'), array('/', 'http://'), $prod_url);

require_once(JPATH_ROOT.DS.'components'.DS.'com_component'.DS.'models'.DS.'object.php');

public function getFile() {
		$params = JComponentHelper::getParams('com_component');
		$getFile = new ComponentModelObject();
		$getFile -> getFile();
		if (JFile::exists($params->get('filepath'). 'price.txt')) {
			JFactory::getApplication()->enqueueMessage(JText::_('COM_COMPONENT_NOTICE_FILE_SAVE_SUCCESS'). '<br /><br />' . JURI::root(). $params->get('filepath'). 'price.txt');
		}
		else {
			JError::raiseWarning(JText::_('COM_COMPONENT_NOTICE_FILE_SAVE_ERROR'));
		}
		$this->setRedirect(JRoute::_('index.php?option=com_component&view=objects', false));
	}

function getFile() {
		$params = JComponentHelper::getParams('com_component');
		$price = $this->getPrice();
		JFile::write((JPATH_ROOT . DS . $params->get('filepath'). 'price.txt'), $price);
		
		return true;
	}

$app = JApplicationCms::getInstance("site");
$router = $app::getRouter("site");

$prod_url = $router->build(JURI::root(). JRoute::_('index.php?option=com_virtuemart&view=productdetails&virtuemart_product_id=' . $product->virtuemart_product_id . '&virtuemart_category_id=' . $product->virtuemart_category_id, true));

$prod_url = str_replace(array('//', 'http:/', '/administrator', '/index.php', '/component/comp_name'), array('/', 'http://', '', '', ''), $prod_url)