[wp-trac] [WordPress Trac] #12922: Setting featured image does not require the post to be saved

[WordPress Trac]

#12922: Setting featured image does not require the post to be saved
-----------------------------+-----------------------
 Reporter:  rooodini         |       Owner:  flixos90
     Type:  defect (bug)     |      Status:  accepted
 Priority:  normal           |   Milestone:  4.6
Component:  Post Thumbnails  |     Version:  3.0
 Severity:  normal           |  Resolution:
 Keywords:  has-patch        |     Focuses:
-----------------------------+-----------------------

Comment (by joemcgill):

 Replying to [comment:28 flixos90]:
 > After having thought about and tested both implementations, I think we
 should rather go with the latter for now. While it is more a workaround
 than an actual solution, we can still change it when we actually start
 supporting revision meta at some point (see #20299). The first approach
 works as well, but I'm not really fond of using revision meta for this
 change before we generally open it up, especially since this would include
 adding all these exceptions for the _thumbnail_id meta key.

 I had the same reservations about adding exceptions for `_thumbnail_id` to
 revision post meta when I was looking over the two approaches. The
 approach to use query variables for previews in [attachment:12922.6.diff]
 definitely feels like a workaround to me, but is a decent improvement
 until there is a better approach for handling revision post meta, because
 it gives people the ability to preview featured image changes on published
 posts without accidentally updating the post.

 Previewing changes to drafts still seems to save any changes to the
 featured image, but I think it's fine to leave that behavior since the
 goal here is to keep someone from accidentally changing the image of their
 published post without realizing it.

--
Ticket URL: <https://core.trac.wordpress.org/ticket/12922#comment:32>
WordPress Trac <https://core.trac.wordpress.org/>
WordPress publishing platform