addcustomtag doesn't work on joomla 2.5

Question

On one of my pages on website, I noticed some meta properties for Facebook (og properties)

However, I want to change them to another og properties.... but the page is dynamic and for different users shows different content, I wanted to insert metas right in php code which generates the page content.

I tried to use

JFactory::getDocument()->addCustomTag('<meta property="og:type" content="articles" />');

But no reaction... old meta roperty og:type didn't change.

Please, suggest some way to edit page metas or way to use addCustomTag correctly.

Thanks

Answer 1

Joomla doesn't add open graph meta tags by default. You have to find the 3rd party plugin or the template setting that creates them and disable it.

You could place then the new og tags using JDocumentHTML/addCustomTag function. Here is an example:

$doc =& JFactory::getDocument();
$doc->addCustomTag( '
    <meta property="og:title" content="" />
    <meta property="og:type" content="" />
    <meta property="og:url" content="" />
    <meta property="og:site_name" content="" />
    ' );

Hope this helps

Answer 2

我已经安装了JFB Connect扩展，因此我只使用了{SCOpenGraph image = PATH} JFB短代码来更改旧的元数据。