[wp-hackers] Status of sitewide categories/terms in WP3

Andrew Nacin wp at andrewnacin.com
Tue Jun 1 15:58:03 UTC 2010

We refer to sitewide categories as "global terms." Here's a Trac search
using that terminology, http://core.trac.wordpress.org/search?q=global+terms,
which should reveal many tickets and changesets.

Without getting into the full details for why the sky will fall on your head
-- in a nutshell, they are very messy and probably should never have been
anything more than a plugin -- we are maintaining the ability to use global
terms. If you are performing an upgrade from MU, then global terms will be
on by default; in 3.0, they are off. They can be turned on again via a
filter (or DB option) along with the creation of the sitecategories table
(for which a function does exist). The filter, option and functions are
documented in the ticket you reference, #12666.

Likewise, they can be turned off with the same filter or by deleting or
modifying a row in the sitemeta table.

On Tue, Jun 1, 2010 at 8:08 AM, Bjorn Wijers <burobjorn at gmail.com> wrote:

> Hi all,
> I'm on the verge of finishing a plugin (bbAggregate) which allows you to
> aggregate posts from different blogs in the same WP3 install to be
> aggregated based on sitewide categories.
> According to this http://core.trac.wordpress.org/ticket/12666 this
> functionality has some issues, but it is not clear what these issues are. I
> have used the same functionality in WordPress MU for multiple clients with
> success and would like to be able to use it in future WP releases as well
> since my clients depend on it.
> My questions are:
> 1) What are the future plans for sitewide categories and?
> 2) What needs to be done to keep the functionality? Regardless of it being
> part of the core.
> 3) What are the the remaining issues preventing this from working stable?
> I can't find more info other than "the sky will fall on your head" with
> regards to the issues and the info in
> http://core.trac.wordpress.org/ticket/12666 is not helping (yet).
> Any help or pointers on more information much appreciated!

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