Автозаполнение title и description - SEO

$tCategory = Jtable::getInstance('Category','jshop');
$tCategory->load($this->category_id);
$category_name = htmlspecialchars($tCategory->getName());
$product_name = htmlspecialchars($this->product->name);
$document =JFactory::getDocument();
$document->setTitle(...);
$document->setMetadata('description', ...);

$document->setTitle($category_name.$product_name.'купить');