Joomla/PHP how to add <meta property> instead of a <meta name> tags to the the header?

Question

Dear Joomla community,

I'm working on a little system plugin to inject Facebook Open Graph properties into an article. Therefore I've been using $document->setMetaData(). But now I discovered that this adds <meta name=""> tags to the header of the page, but Facebook expects <meta property=""> tags.

What's the easiest way to put a <meta property=""> tag into the page header?

Please explain in as much detail as possible, as I'm absolutely new to Joomla plugin developemnt.

Any advice is appreciated, Thank you.

Answer 1

Starting from Joomla 3.6 you can add 'property' attribute using setMetaData

$doc = JFactory::getDocument();
$doc->setMetaData('og:image', 'https://cdn.joomla.org/images/Joomla_logo.png', 'property');

Reference : https://github.com/joomla/joomla-cms/pull/10682

Answer 2

Never mind, I just discovered the mighty $document->addCustomTag() API call. Thanks you anyway!