Taxonomy Term Path

If you want to save files attached to a node inside a special file structure you can use this snippet with the filefield_paths module.

If you add a taxonomy_field to a node and tag it with foo and bar, this snippet generates foo/bar/
"field_texturen" is a sample name here, replace with your fields name.

WORKING CODE

if(isset($data['node'])) {   
  $field_data = field_view_field('node', $data['node'], 'field_texturen');
  foreach($field_data['#items'] as $key => $term_data) {
    //save names as lowercase
    $terms[] = strtolower($term_data['taxonomy_term']->name);
    }
  //implode
  $path = implode('/', $terms);
  } 

  if(!empty($path)) {
  return $path . '/';
 }

One may think this should work too, but it does not.
THIS ONLY WORKS ON NODE UPDATE.

 //are we inside a node
  if(arg(0) == 'node' && is_numeric(arg(1)) ) {
    $field_data = field_view_field('node', node_load(arg(1)), 'field_texturen');

    foreach($field_data['#items'] as $key => $term_data) {
      //save names as lowercase
      $terms[] = strtolower($term_data['taxonomy_term']->name);
    }
    //implode
    $path = implode('/', $terms);
  }
  if(!empty($path)) {
  return $path . '/';
 }