Fix for wp.newPost and wp.editPost not attaching thumbnail

Hello all,

Here’s my patch for post.php for wp.newPost and wp.editPost of the wordpress xml rpc api not taking into account correctly the ‘post_thumbnail’ … With this fix, attaching a thumbnail will work exactly like wp.uploadFile attaches an image to a post.

--- /Users/karim/Desktop/post.php	2015-05-06 16:21:30.000000000 +0200
+++ /Users/karim/Desktop/post 2.php	2015-07-25 12:59:32.000000000 +0200
@@ -1,6 +1,6 @@
 <?php
 /**
- * Post functions and post utility function.
+ * sst functions and post utility function.
  *
  * @package WordPress
  * @subpackage Post
@@ -5848,9 +5848,16 @@
 	$post = get_post( $post );
 	$thumbnail_id = absint( $thumbnail_id );
 	if ( $post && $thumbnail_id && get_post( $thumbnail_id ) ) {
-		if ( wp_get_attachment_image( $thumbnail_id, 'thumbnail' ) )
+		if ( wp_get_attachment_image( $thumbnail_id, 'thumbnail' ) ) {
+
+			$my_post = array(
+      				'ID'           => $thumbnail_id,
+      				'post_parent'   => $post->ID
+  			);
+			wp_update_post( $my_post );
+
 			return update_post_meta( $post->ID, '_thumbnail_id', $thumbnail_id );
-		else
+		} else
 			return delete_post_meta( $post->ID, '_thumbnail_id' );
 	}
 	return false;
@@ -5931,4 +5938,4 @@

 		update_post_caches( $fresh_posts, 'any', $update_term_cache, $update_meta_cache );
 	}
-}
+}
\ No newline at end of file