Ticket #21977: ticket.21977.2ndopnion.diff

class-wp-xmlrpc-server.php

@@ -1660 +1660 @@
                                 return new IXR_Error( 403, __( 'The term name cannot be empty.' ) );
                 }
 
-                if ( isset( $content_struct['parent'] ) ) {
+                if ( isset( $content_struct['parent'] ) && !empty( $content_struct['parent'] ) ) {
                         if ( ! $taxonomy['hierarchical'] )
                                 return new IXR_Error( 403, __( "This taxonomy is not hierarchical so you can't set a parent." ) );
 
-                        $parent_term_id = (int) $content_struct['parent'];
-                        $parent_term = get_term( $parent_term_id , $taxonomy['name'] );
+                        if ( $content_struct['parent'] != '0' ) {
+                                $parent_term_id = (int) $content_struct['parent'];
+                                $parent_term = get_term( $parent_term_id , $taxonomy['name'] );
 
-                        if ( is_wp_error( $parent_term ) )
-                                return new IXR_Error( 500, $parent_term->get_error_message() );
+                                if ( is_wp_error( $parent_term ) )
+                                        return new IXR_Error( 500, $parent_term->get_error_message() );
 
-                        if ( ! $parent_term )
-                                return new IXR_Error( 403, __( 'Parent term does not exist.' ) );
+                                if ( ! $parent_term )
+                                        return new IXR_Error( 403, __( 'Parent term does not exist.' ) );
+                        }
 
                         $term_data['parent'] = $content_struct['parent'];
                 }