Ticket #9007: category-template.diff

category-template.php

@@ -17 +17 @@
  * @param array $visited Optional. Category Term IDs that have already been added.
  * @return string
  */
-function get_category_children( $id, $before = '/', $after = '', $visited = array() ) {
+function get_category_children( $id, $before = '/', $after = '' ) {
         if ( 0 == $id )
                 return '';
 
-        $chain = '';
-        /** TODO: consult hierarchy */
-        $cat_ids = get_all_category_ids();
-        foreach ( (array) $cat_ids as $cat_id ) {
-                if ( $cat_id == $id )
-                        continue;
-
-                $category = get_category( $cat_id );
-                if ( is_wp_error( $category ) )
-                        return $category;
-                if ( $category->parent == $id && !in_array( $category->term_id, $visited ) ) {
-                        $visited[] = $category->term_id;
-                        $chain .= $before.$category->term_id.$after;
-                        $chain .= get_category_children( $category->term_id, $before, $after );
-                }
-        }
-        return $chain;
+  $children = get_term_children( $id, 'category' );
+  
+  if ( !is_wp_error( $children ) && !empty( $children ) )
+    $chain = $before . join( $before . $after, $children ) . $after;
+  else
+    $chain = '';
+    
+  return $chain;
 }
 
 /**