gistfile1.php

<?php
/**
 * render_nested_set
 *
 * This function is a helper used to render a nested set tree
 * @param Doctrine_Collection $coll (nodes contained in current branch)
 * @param array $path (path to reach the selected node)
 * @return void
 * @author Romain Pouclet
 */
function render_nested_set(Doctrine_Collection $coll, array $path = array())
{
  $lastItem = !is_null($path) && sizeof($path) > 0 ? (int)$path[sizeof($path) - 1] : null;
  
  $output = '';
  $output.= '<ul>';
  
  foreach ($coll as $item) 
  {
    $output.= '<li>';
    $output.= sprintf('<a href="%s"><span>%s</span></a>', url_for('noe_rubric_front_show', array('slug' => $item->getSlug())), $item->getLabel());
    
    if ($item->getNode()->hasChildren() && (in_array($item->getId(), $path) || (int)$item->getId() === $lastItem))
    {
      $output.= render_nested_set($item->getNode()->getChildren(), $path); 
    }
    
    $output.= '</li>';
  }
  
  $output .= '</ul>';
  return $output;
}