function onBeforeDisplayContent( &$article, &$params, $limitstart ){
//this may fire fron a component other than com_content
if(!file_exists(JPATH_SITE.DS.'plugins'.DS.'system'.DS.'myApiConnectFacebook.php') || ( !array_key_exists('category',$article) && !array_key_exists('showK2Plugins',$params) )){ return; }
if((@$article->id != '') && (@$_POST['fb_sig_api_key'] == '') && class_exists('plgSystemmyApiOpenGraph')){
$row = & JTable::getInstance('content');
$row->load($article->id);
$attribs = new JParameter($row->attribs);
if($attribs->get('ogimage','') == ''){
$attribs->set('ogimage',plgContentmyApiOpenGraphContent::getContentImage($article->text));
$row->attribs = $attribs->toString();
$row->bind($row);
$row->store();
}
//Set open graph tags
if(JRequest::getVar('view','','get') == 'article' || (JRequest::getVar('option','','get') == 'com_k2' && JRequest::getVar('view','','get') == 'item')){
if(isset($article->slug)){
require_once(JPATH_SITE.DS.'components'.DS.'com_content'.DS.'helpers'.DS.'route.php');
$link = ContentHelperRoute::getArticleRoute($article->slug, $article->catslug, $article->sectionid);
}elseif(method_exists('K2HelperRoute','getItemRoute')){
$link = K2HelperRoute::getItemRoute($article->id.':'.urlencode($article->alias),$article->catid.':'.urlencode($article->category->alias));
}else{
error_log('myApi unable to calculate link for the article id '.$article->id);
return;
}
$u =& JURI::getInstance( JURI::base().$link );
$port = ($u->getPort() == '') ? '' : ":".$u->getPort();
$articleURL = 'http://'.$u->getHost().$port.$u->getPath().'?'.$u->getQuery();
$rawText = strip_tags($article->introtext);
$newTags = array();
$newTags['og:title'] = $article->title;
$newTags['og:description'] = (strlen($rawText) > 247) ? substr($rawText,0,247).'...' : $rawText;
$newTags['og:type'] = 'article';
$newTags['og:author'] = (is_object($article->author)) ? $article->author->name : $article->author;
$newTags['og:url'] = $articleURL;
if($attribs->get('ogimage','0') != '0') $newTags['og:image'] = $attribs->get('ogimage');
plgSystemmyApiOpenGraph::setTags($newTags);
}
}
}
function setTags($array){
plgSystemmyApiOpenGraph::$ogptags = array_merge(plgSystemmyApiOpenGraph::$ogptags, $array);
}
