Meta данные материала в Joomla 3.8.3 - Joomla 3.x: Установка, обновление и настройка

//opengraph
$document = JFactory::getDocument();
//$document->setTitle($this->item->title);
$document->addCustomTag('<meta property="og:url" content="'.JURI::current().'" />');
$document->addCustomTag('<meta property="og:type" content="article" />');
//$document->setDescription( JHtml::_('string.truncate', $this->item->introtext, 155, false, false ) );
$document->addCustomTag('<meta property="og:title" content="'. $this->item->title .'" />');
$document->addCustomTag('<meta property="og:description" content="'. JHtml::_('string.truncate', $this->item->introtext, 155, false, false ).'" />');
if ($article_image) {
	$document->addCustomTag('<meta property="og:image" content="'. JURI::root().$article_image.'" />');
	$document->addCustomTag('<meta property="og:image:width" content="600" />');
	$document->addCustomTag('<meta property="og:image:height" content="315" />');
}

$document->setTitle($this->item->title);

$document->setDescription( JHtml::_('string.truncate', $this->item->introtext, 155, false, false ) );