[wp-trac] [WordPress Trac] #46723: Feature Image disappears only in Gutenberg with CPT.

[WordPress Trac]

#46723: Feature Image disappears only in Gutenberg with CPT.
--------------------------+------------------------------
 Reporter:  miyauchi      |       Owner:  (none)
     Type:  defect (bug)  |      Status:  new
 Priority:  normal        |   Milestone:  Awaiting Review
Component:  REST API      |     Version:  5.1
 Severity:  normal        |  Resolution:
 Keywords:  has-patch     |     Focuses:
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Comment (by miyauchi):

 I tried to check the user has `$post_type->cap->edit_post` capability for
 the parent post type of the attachment.
 But I run into the problem that the attachment possibly has another parent
 post type like `page`.

 I tried to add following lines in `check_update_permission()` and it looks
 good.

 {{{#!php
 if ( 'attachment' === $post->post_type ) {
         return current_user_can( 'upload_files' );
 }
 }}}


 But I am concerned about introducing security risk.

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Ticket URL: <https://core.trac.wordpress.org/ticket/46723#comment:3>
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