[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
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 Reporter:  rooodini          |       Owner:  flixos90
     Type:  defect (bug)      |      Status:  closed
 Priority:  normal            |   Milestone:  4.6
Component:  Post Thumbnails   |     Version:  3.0
 Severity:  normal            |  Resolution:  fixed
 Keywords:  has-patch commit  |     Focuses:
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Changes (by joemcgill):

 * status:  accepted => closed
 * resolution:   => fixed


Comment:

 In [changeset:"38118"]:
 {{{
 #!CommitTicketReference repository="" revision="38118"
 Post Thumbnails: Only update featured images when saving a post.

 Previously, changing the post thumbnail of a published post in the edit
 screen
 would immediately apply the change, rather than waiting for the post to be
 saved before applying the update. This could lead to someone
 unintentionally
 editing the post thumbnail on a published post, and made it impossible to
 preview changes to post thumbnails on published posts before saving the
 change.

 This introduces a new Ajax handler, `wp_ajax_get_post_thumbnail_html()` to
 retrieve the HTML for the post thumbnail meta box without updating the
 post
 meta value for `_thumbnail_id`. It also allows post thumbnail changes to
 be
 previewed by passing the `_thumbnail_id` as a query variable to the
 preview
 screen and adding a new filter, `_wp_preview_post_thumbnail_filter()`,
 which
 gets applied to `get_post_metadata` during the post preview process.

 Props flixos90.
 Fixes #12922.
 }}}

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Ticket URL: <https://core.trac.wordpress.org/ticket/12922#comment:35>
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