[wp-trac] [WordPress Trac] #63904: Add action hook when terms counts are updated

[WordPress Trac]

#63904: Add action hook when terms counts are updated
------------------------------+-----------------------------
 Reporter:  LeonidasMilossis  |       Owner:  SergeyBiryukov
     Type:  enhancement       |      Status:  accepted
 Priority:  normal            |   Milestone:  6.9
Component:  Taxonomy          |     Version:  trunk
 Severity:  normal            |  Resolution:
 Keywords:                    |     Focuses:  performance
------------------------------+-----------------------------
Changes (by SergeyBiryukov):

 * owner:  (none) => SergeyBiryukov
 * status:  new => accepted
 * milestone:  Awaiting Review => 6.9


Old description:

> With https://core.trac.wordpress.org/ticket/42522 and
> https://core.trac.wordpress.org/ticket/63562 merged and slated for 6.9,
> we have now achieved running the UPDATE queries for updating term counts
> only when we should, which is great.
>
> What we still lack though is the presence of a dedicated action hook that
> runs only during those operations. The name of that hook could be
> something like `update_term_count`.
>
> An example where this is needed is something we want to add in Yoast SEO
> where we need to update some database entries of our custom database
> tables and we need to do that only when a term count is updated.
> Considering that we're talking about an extra database query, we want to
> make sure that we only do that when a term count is actually updated and
> not with every update of terms/posts.
>
> One ''could'' use the `edit_term_taxonomy` action for this, while
> checking for the existence of the `$args` parameter, but this feels hacky
> and having a more canonical and dedicated hook for this probably makes
> more sense.

New description:

 With #42522 and #63562 merged and slated for 6.9, we have now achieved
 running the UPDATE queries for updating term counts only when we should,
 which is great.

 What we still lack though is the presence of a dedicated action hook that
 runs only during those operations. The name of that hook could be
 something like `update_term_count`.

 An example where this is needed is something we want to add in Yoast SEO
 where we need to update some database entries of our custom database
 tables and we need to do that only when a term count is updated.
 Considering that we're talking about an extra database query, we want to
 make sure that we only do that when a term count is actually updated and
 not with every update of terms/posts.

 One ''could'' use the `edit_term_taxonomy` action for this, while checking
 for the existence of the `$args` parameter, but this feels hacky and
 having a more canonical and dedicated hook for this probably makes more
 sense.

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Ticket URL: <https://core.trac.wordpress.org/ticket/63904#comment:1>
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