From 97bf1f11bdbba3e88b7a7b60763901efa323029d Mon Sep 17 00:00:00 2001
From: ryan <ryan@1a063a9b-81f0-0310-95a4-ce76da25c4cd>
Date: Mon, 30 Nov 2009 21:41:52 +0000
Subject: [PATCH] Save parent temp ID for unattached attachments in postmeta.
 Props scribu. fixes #9471

git-svn-id: http://svn.automattic.com/wordpress/trunk@12298 1a063a9b-81f0-0310-95a4-ce76da25c4cd
---
 wp-admin/includes/post.php | 12 +++++++++++-
 wp-includes/post.php       |  3 +++
 2 files changed, 14 insertions(+), 1 deletion(-)

diff --git a/wp-admin/includes/post.php b/wp-admin/includes/post.php
index 588bc5089..e611287dc 100644
--- a/wp-admin/includes/post.php
+++ b/wp-admin/includes/post.php
@@ -773,7 +773,17 @@ function _relocate_children( $old_ID, $new_ID ) {
 	global $wpdb;
 	$old_ID = (int) $old_ID;
 	$new_ID = (int) $new_ID;
-	return $wpdb->update($wpdb->posts, array('post_parent' => $new_ID), array('post_parent' => $old_ID) );
+
+	$children = $wpdb->get_col( $wpdb->prepare("
+		SELECT post_id
+		FROM $wpdb->postmeta
+		WHERE meta_key = '_wp_attachment_temp_parent'
+		AND meta_value = %d", $old_ID) );
+
+	foreach ( $children as $child_id ) {
+		$wpdb->update($wpdb->posts, array('post_parent' => $new_ID), array('ID' => $child_id) );
+		delete_post_meta($child_id, '_wp_attachment_temp_parent');
+	}
 }
 
 /**
diff --git a/wp-includes/post.php b/wp-includes/post.php
index 3110ba4c6..271d0dd56 100644
--- a/wp-includes/post.php
+++ b/wp-includes/post.php
@@ -2804,6 +2804,9 @@ function wp_insert_attachment($object, $file = false, $parent = 0) {
 
 	clean_post_cache($post_ID);
 
+	if ( isset($post_parent) && $post_parent < 0 )
+		add_post_meta($post_ID, '_wp_attachment_temp_parent', $post_parent, true);
+
 	if ( $update) {
 		do_action('edit_attachment', $post_ID);
 	} else {