[wp-trac] [WordPress Trac] #32795: Duplicate permalinks when using /%postname%/ (was: Duplicate permanlinks)

WordPress Trac noreply at wordpress.org
Fri Jun 26 12:34:35 UTC 2015

#32795: Duplicate permalinks when using /%postname%/
 Reporter:  j.conti                       |       Owner:
     Type:  defect (bug)                  |      Status:  new
 Priority:  normal                        |   Milestone:  Future Release
Component:  Permalinks                    |     Version:  4.1
 Severity:  normal                        |  Resolution:
 Keywords:  needs-patch needs-unit-tests  |     Focuses:
Changes (by boonebgorges):

 * keywords:   => needs-patch needs-unit-tests
 * version:  4.2.2 => 4.1
 * milestone:  Awaiting Review => Future Release


 The same question comes up in
 https://core.trac.wordpress.org/ticket/18962#comment:2 and
 https://core.trac.wordpress.org/ticket/18962#comment:10. It was not
 addressed in [30158], the changeset that ultimately resolved #18962.

 There are three options here:
 1. Do nothing. If this happens to someone, it's their fault for using
 2. In `wp_unique_post_slug()`, change the duplicate slug check based on
 the permalink structure. If it's `/%postname%/`, and `$post_type =
 'post'`, dupe checks should include pages as well as posts.
 3. In `wp_unique_post_slug()`, have a special case for 'post' that never
 allows it to share a slug with a page.

 IMO, 1 is not acceptable. 2 and 3 are similar. 2 is less restrictive. It
 only forces uniqueness when it's really required based on the current
 permastruct. But it will cause problems when someone has permastruct
 `/%year%/%postname%/`, creates a post and a page with slug `foo`, and then
 changes to `/%postname%/`. Choice 3, while unnecessarily restrictive in
 many cases, is more foolproof. 3 seems like the right way to go.

 Needs a patch and unit tests.

Ticket URL: <https://core.trac.wordpress.org/ticket/32795#comment:1>
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