Additional custom taxonomy object types

[sooskriszta]

At the moment, a taxonomy can be registered for one of the following objects (ref ​http://codex.wordpress.org/Function_Reference/register_taxonomy ):

• post
• page
• attachment
• revision
• nav_menu_item
• a particular cpt

Taxonomies would become much more powerful and flexible, if:

• They accept additional objects, e.g. users, taxonomies
• They accept multiple objects, e.g. a single custom taxonomy could group together posts, pages and attachments

[sirzooro]

1st case was already discussed in #10142.

I am not sure about 2nd one - probably this can be achieved by assigning the same term to multiple objects, and then querying for all objects assigned to that term. If this is not the case, please provide more details on this.

[nacin]

Taxonomies can already accept multiple objects, and they can also accept additional objects like users or comments.

[sooskriszta]

Replying to nacin:

Taxonomies can already accept multiple objects, and they can also accept additional objects like users or comments.

So, to take the example of a particular use case, in BuddyPress, Groups could be made into custom taxonomies that group:

• people (members),
• attachments (photos),
• custom objects (updates) and
• CPTs (forums, topics, replies)

etc
together?

[wonderboymusic]

almost everything in BuddyPress is a post_type thing, so you are covered already

[sooskriszta]

There is some discussion over at BuddyPress around using CPTs and custom taxonomies:
​http://buddypress.trac.wordpress.org/ticket/4796
​http://buddypress.trac.wordpress.org/ticket/4017