Ticket #11018: 11018_page_loop.diff

C:/xampp/htdocs/wordpress_trunk/wp-admin/includes/template.php

@@ -1560 +1560 @@
         $post = $global_post;
 }
 
-/*
- * display one row if the page doesn't have any children
- * otherwise, display the row and its children in subsequent rows
- */
 /**
  * {@internal Missing Short Description}}
  *
@@ -1573 +1569 @@
  * @param unknown_type $level
  */
 function display_page_row( $page, $level = 0 ) {
-        global $post;
+        global $post, $wpdb;
         static $rowclass;
 
         $post = $page;
         setup_postdata($page);
 
         if ( 0 == $level && (int)$page->post_parent > 0 ) {
-                //sent level 0 by accident, by default, or because we don't know the actual level
+                /* 
+                 * sent level 0 by accident, by default, or because we don't know the actual level
+                 * detect and fix possible loops here 
+                 */
                 $find_main_page = (int)$page->post_parent;
+        
+                $track_parents[] = $find_main_page; 
+                
                 while ( $find_main_page > 0 ) {
                         $parent = get_page($find_main_page);
 
@@ -1591 +1593 @@
                         $level++;
                         $find_main_page = (int)$parent->post_parent;
 
+                        if ( in_array( $find_main_page, $track_parents ) ) {
+                                $parent->post_parent = 0; 
+                                $wpdb->query( $wpdb->prepare("UPDATE $wpdb->posts SET post_parent = '0' WHERE ID = %d", $parent->ID) );
+                                clean_page_cache( $parent->ID );
+                                break; 
+                        } else {
+                                $track_parents[] = $find_main_page; 
+                        }
+
                         if ( !isset($parent_name) )
                                 $parent_name = $parent->post_title;
                 }