ogmeta/ogmeta.php at master · CrystalAsia/ogmeta · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
<?
defined('_JEXEC') or die('Restricted access');

jimport('joomla.plugin.plugin');

class plgContentOgMeta extends JPlugin
{

	public function plgContentOgMeta(&$subject, $params)
	{
		parent::__construct($subject, $params);
	}

	public function onContentBeforeDisplay($context, &$article, &$params)
	{
		global $mainframe;
		if (JRequest::getVar('view') == 'article') {
			$document = JFactory::getDocument();

			// Sanitize description
			$introText = substr(strip_tags($article->introtext), 0,250) . "...";

			// Remove quotes
			$articleTitle = str_replace(array('"',"'"), "", $article->title);
			$introText = str_replace(array('"',"'"), "", $introText);

			$config = JFactory::getConfig();
			$u = JFactory::getURI();

			$document->addCustomTag('<meta prefix="og: http://ogp.me/ns#" property="og:title" content="' . $articleTitle . '" />');
			$document->addCustomTag('<meta prefix="og: http://ogp.me/ns#" property="og:url" content="' . $u->toString() . '" />');
			$document->addCustomTag('<meta prefix="og: http://ogp.me/ns#" property="og:description" content="' . $introText . '" />');
			$document->addCustomTag('<meta prefix="og: http://ogp.me/ns#" property="og:site_name" content="' . $config->get('sitename') . '" />');

			$document->addCustomTag('<meta prefix="og: http://ogp.me/ns#" property="article:publisher" content="' . JURI::root() . '" />');

			$ogImage = $this->params->get('ogimage');
			if ($ogImage != '') {
				$document->addCustomTag('<meta prefix="og: http://ogp.me/ns#" property="og:image" content="' . $ogImage . '" />');
			}

			$document->addCustomTag('<meta prefix="og: http://ogp.me/ns#" property="og:type" content="article" />');
		}
	}
}