[wp-trac] [WordPress Trac] #23983: Add filter to get_post_thumbnail_id to override default thumbnail use

[WordPress Trac]

#23983: Add filter to get_post_thumbnail_id to override default thumbnail use
-----------------------------+-------------------------
 Reporter:  Jesper800        |       Type:  enhancement
   Status:  new              |   Priority:  normal
Milestone:  Awaiting Review  |  Component:  Media
  Version:                   |   Severity:  normal
 Keywords:  2nd-opinion      |
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 The current function for getting the post thumbnail ID, used in among
 others `get_the_post_thumbnail`, is as follows:
 {{{
 function get_post_thumbnail_id( $post_id = null ) {
         $post_id = ( null === $post_id ) ? get_the_ID() : $post_id;
         return get_post_meta( $post_id, '_thumbnail_id', true );
 }
 }}}

 In my opinion, this needs a filter, so the user can override this by the
 attachment of his choosing, such as an Advanced Custom Fields image
 attached to the post.

 Something like:
 {{{
 function get_post_thumbnail_id( $post_id = null ) {
         $post_id = ( null === $post_id ) ? get_the_ID() : $post_id;
         return apply_filters( 'post_thumbnail_id', get_post_meta(
 $post_id, '_thumbnail_id', true ), $post_id );
 }
 }}}

 I know you can hook into the `get_{$meta_type}_metadata` filter, but
 getting the post thumbnail ID should still be possible by using
 get_post_meta, the other thumbnail should just be used for displaying.

-- 
Ticket URL: <http://core.trac.wordpress.org/ticket/23983>
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