boonebgorges

Preparing Plugins for Term Splitting

Historically, two terms in different taxonomies with the same slug (for instance, a tag and a category sharing the slug "news") have shared a single term ID. Beginning in WordPress 4.2, when one of these shared terms is updated, it will be split: the updated term will be assigned a new term ID.

In the vast majority of situations, this update will be seamless and uneventful. However, some plugins and themes store term IDs in options, post meta, user meta, or elsewhere. WP 4.2 will include two different tools to help authors of these plugins and themes with the transition.

The 'split_shared_term' action

When a shared term is assigned a new term ID, a new 'split_shared_term' action is fired. Plugins and themes that store term IDs should hook to this action to perform necessary migrations. The documentation for the hook is as follows:

boonebgorges

<?php   
/* Plugin Name: Damn Vulnerable WordPress Plugin
 * Description: Intentionally vulnerable plugin for plugin author education
 * Version: 0.1
 * Plugin URI: http://make.wordpress.org/plugins/2013/04/09/intentionally-vulnerable-plugin/
 * Author: Jon Cave
 * Author URI: http://joncave.co.uk
 * License: GPLv2+
 *              
 * DO NOT RUN THIS PLUGIN ON AN INTERNET ACCESSIBLE SITE

boonebgorges

#!/bin/bash
# cd into the directory
cd ~/gitsync/github-wordpress-sync/;
# Make sure we are not already running
if [ -f .sync-running ];then
	if test ! `find ".sync-running" -mmin +10`;then
		# Currently running, but not stuck
		exit 1;
	fi
fi;