<?xml version="1.0" encoding="utf-8"?> <extension version="3.2" type="plugin" group="content" method="upgrade"> <name>plg_content_weblink</name> <author>EB</author> <creationDate>May 2015</creationDate> <copyright>Copyright (C) 2005 - 2013 Open Source Matters. All rights reserved.</copyright> <license>GNU General Public License version 2 or later; see LICENSE.txt</license> <authorEmail>admin@joomla.org</authorEmail> <authorUrl>www.joomla.org</authorUrl> <version>3.1.0</version> <description>PLG_CONTENT_WEBLINK_XML_DESCRIPTION</description> <files> <filename plugin="weblink">weblink.php</filename> </files> <config> <fields name="params"> <fieldset name="basic"> <field name="cats" type="category" extension="com_content" label="Categories" description="Categories to include plugin" multiple="true" /> </fieldset> </fields> </config> </extension>
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<?php
/**
* @copyright Copyright (C) 2005 - 2015 Open Source Matters, Inc. All rights reserved.
* @license GNU General Public License version 2 or later; see LICENSE.txt
*/
defined('_JEXEC') or die;
class plgContentWeblink extends JPlugin
{
public function onContentBeforeSave($context, &$article, $isNew)
{
//Turn on all error reporting so we can see what's wrong
error_reporting(E_ALL);
//Grab all the categories we've selected in our plugin
$cats = $this->params->def('cats', array());
//If the current article is in one of those categories
//Let's grab the Open Graph metadata
if( in_array($article->catid, $cats) ){
//JSON Decode the images and urls of the article
$images = json_decode($article->images);
$urls = json_decode($article->urls);
//If either the are empty, let's get the tags
//OR if the introtext is empty, let's get the tags
if( !empty($urls->urla) && (empty($images->image_intro) || empty($article->introtext)) ){
//Get Open Graph Meta Data
$data = file_get_contents($urls->urla);
$dom = new DomDocument;
@$dom->loadHTML($data);
$xpath = new DOMXPath($dom);
# query metatags with og prefix
$metas = $xpath->query('//*/meta[starts-with(@property, \'og:\')]');
$og = array();
//Loop through all of the tags to add to $og variable
foreach($metas as $meta){
# get property name without og: prefix
$property = str_replace('og:', '', $meta->getAttribute('property'));
# get content
$content = $meta->getAttribute('content');
$og[$property] = $content;
}
//If the image_intro is empty, and we have an Open Graph image
//Let's set the article's image_intro
if( empty($images->image_intro) && isset($og['image']) ){
$images->image_intro = $og['image'];
$article->images = json_encode($images);
}
//If the introtext is empty and we have an Open Graph description
//Let's set the article's introtext—wrapping it with paragraph tags
if( empty($article->introtext) && isset($og['description']) ){
$article->introtext = '<p>'.$og['description'].'</p>';
}
return true;
}
}
}
}
PHP Warning: Parameter 2 to plgContentWeblink::onContentBeforeSave() expected to be a reference
public function onContentBeforeSave($context, &$article, $isNew)
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