[wp-hackers] get_terms() & 'term_group'

[Otto]

Term aliasing is one of those things that nobody really uses, but it's
left there because there's some ideas floating around it that could be
useful for somebody.

Basically, the idea is to group terms together showing that they're
related or similar or the same or something. For example, if I went to
/tags/wordpress then maybe it'd be nice to get posts with the tag "WP"
as well. If those two terms were in the same group, then I might be
able to do something like that.

Marking terms as aliases is there and works. How you can use that term
grouping is not really in there at all. That's more advanced
functionality that needs to be fleshed out and rethought before
becoming core code.

-Otto



On Sat, Jul 16, 2011 at 2:22 PM, Jackson Whelan <jw at jacksonwhelan.com> wrote:
> On 7/16/11 1:17 PM, 24/7 wrote:
>>
>> I was just looking the Codex [1] article and found 'term_group' as valid
>> value for 'order_by'. Now I question how&  where I would set a term_group.
>> Any idea?
>>
>> Thanks.
>> K.
>>
>> [1] http://codex.wordpress.org/Function_Reference/get_terms
>
> Quoting Otto [1] :
>
> "From the interface side of things, it's not used for anything at all.
>
> However, internally, it's possible to create terms that are aliases of other
> terms. These terms will then be in the same term group, showing that they're
> really the same term.
>
> There is no real use for it at this point. It's there for potential future
> functionality and for plugins.
>
> If you are a plugin programmer and know how WP works, then you can add an
> alias_of parameter to the call to wp_insert_term(). The alias_of specifies
> the slug of the term that the new term you're inserting will be an alias of
> (and so which will share a term_group). Same parameter works on
> wp_update_term() too."
>
> [1] http://wordpress.org/support/topic/term-group-column
>
> See also this archived thread on wp-hackers:
>
> http://lists.automattic.com/pipermail/wp-hackers/2007-October/015734.html
>
> Hope that helps.
>
> - Jackson
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