Joomla! Documentation™

The "API16" namespace is an archived namespace. This page contains information for a Joomla! version which is no longer supported. It exists only as a historical reference, it will not be improved and its content may be incomplete and/or contain broken links.

Description

Method to determine if a node is a leaf node in the tree (has no children).

Syntax

isLeaf($pk=null)

Parameter Name	Default Value	Description
$pk	null	Primary key of the node to check.

Returns

boolean True if a leaf node.

Defined in

libraries/joomla/database/tablenested.php

Importing

jimport( 'joomla.database.tablenested' );

Source Body

public function isLeaf($pk = null)
{
        // Initialise variables.
        $k = $this->_tbl_key;
        $pk = (is_null($pk)) ? $this->$k : $pk;

        // Get the node by primary key.
        if (!$node = $this->_getNode($pk)) {
                // Error message set in getNode method.
                return false;
        }

        // The node is a leaf node.
        return (($node->rgt - $node->lft) == 1);
}