From fcbb71ad77efeeee5912d9a4355462a20219ad80 Mon Sep 17 00:00:00 2001
From: Andrew Nacin <nacin@git.wordpress.org>
Date: Sat, 5 Jan 2013 03:50:28 +0000
Subject: [PATCH] Whenever we have compat fields to render, send a dummy
 menu_order field (which was always sent in 3.4) to ensure an unchecked
 checkbox can still be processed by attachment_fields_to_save. fixes #22868.

git-svn-id: https://develop.svn.wordpress.org/trunk@23290 602fd350-edb4-49c9-b593-d223f7449a82
---
 wp-admin/includes/media.php | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/wp-admin/includes/media.php b/wp-admin/includes/media.php
index beb3dcc52a..a8751f1231 100644
--- a/wp-admin/includes/media.php
+++ b/wp-admin/includes/media.php
@@ -1417,6 +1417,9 @@ function get_compat_media_markup( $attachment_id, $args = null ) {
 		$item .= '<input type="hidden" name="' . esc_attr( $hidden_field ) . '" value="' . esc_attr( $value ) . '" />' . "\n";
 	}
 
+	if ( $item )
+		$item = '<input type="hidden" name="attachments[' . $attachment_id . '][menu_order]" value="' . esc_attr( $post->menu_order ) . '" />' . $item;
+
 	return array(
 		'item'   => $item,
 		'meta'   => $media_meta,