Keep post’s draft date after publishing?

2 comments

1. you need to manually set the publish date.

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2. The code below probably needs some adjusting, but the trick here is to obtain the date of the first revision and apply it to the post being published:

   add_action(  'transition_post_status',  function ( $new_status, $old_status, $post )
   {
     if ( $old_status == 'pending'  &&  $new_status == 'publish' 
          && $post->post_date_gmt == $post->post_modified_gmt) {
       $revisions = wp_get_post_revisions($post->ID);
       $oldest = NULL;
       foreach($revisions as $revision){
         $oldest = $revision->ID;
       };
       $previousdate = get_the_date( 'Y-m-d H:i:s', $oldest );
       wp_update_post(
         array (
           'ID'            => $post->ID,
           'post_date'     => $previousdate,
           'post_date_gmt' => get_gmt_from_date( $previousdate )
         )
       );
     }
   
   }, 10, 3 );
   

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