LH Shadow Taxonomies lets you relate one kind of WordPress object to another using ordinary taxonomy terms. Register a taxonomy with a shadow argument naming a post type, users or BuddyPress groups, and the plugin keeps one term in that taxonomy for every object of that type: created when the object is created, renamed when it changes and removed when it is deleted. Tagging a post with one of those terms then records a relationship to the underlying user, group or post, using the editor screens, queries and REST routes WordPress already has.
It is a developer library: it registers no taxonomies itself and does nothing until another plugin or theme declares a shadow taxonomy. LH Buddypress Group Tagger is one such plugin.
Features
- Shadow any post type, WordPress users or BuddyPress groups, declared with a single argument to
register_taxonomy(). - Terms stay in step with their objects: name, slug and description follow the post title, user display name or group name.
- Objects that existed before the taxonomy was registered are backfilled in batches by a daily cron job.
- A Shadow column on the taxonomy’s admin screen links each term to the user, group or post it stands for.
- Actions fire when objects are shadowed or unshadowed and when shadow terms are assigned to or removed from content, so other plugins can build on the relationships.
- Filters to exclude particular objects, change which post statuses are shadowed and tune the backfill batch size.
Getting started
Activate the plugin, then register a taxonomy with 'shadow' => 'user' (or 'bp_group', or a post type name) among its arguments, attached to whichever post types should be tagged with it. Existing objects get their terms within a day; new ones get theirs immediately. BuddyPress is only needed for group shadowing.
