Removing [nid:n] in nodereference autocomplete

Question

Using the autocomplete field for a cck nodereference always displays the node id as a cryptic bracketed extension:

Page Title [nid:23]

I unders

Answer 1

Here is the full Drupal 7 version (References 7.x-2.1) of Grayside's answer. This goes in your custom module:

/**
 * Implementation of hook_menu_alter().
 */
function custom_menu_alter(&$items) {
  $items['node_reference/autocomplete/%/%/%']['page callback'] = 'custom_new_node_reference_autocomplete';
}

/**
 * Implementation of Menu callback for the autocomplete results.
 */
function custom_new_node_reference_autocomplete($entity_type, $bundle, $field_name, $string = '') {
  $field = field_info_field($field_name);
  $instance = field_info_instance($entity_type, $field_name, $bundle);

  $options = array(
    'string' => $string,
    'match' => $instance['widget']['settings']['autocomplete_match'],
    'limit' => 10,
  );
  $references = node_reference_potential_references($field, $options);

  $matches = array();
  foreach ($references as $id => $row) {
    // Markup is fine in autocompletion results (might happen when rendered
    // through Views) but we want to remove hyperlinks.
    $suggestion = preg_replace('/([^<]*)<\/a>/', '$2', $row['rendered']);
    // Add a class wrapper for a few required CSS overrides.
    $matches[$row['title']] = '
' . $suggestion . '
'; // this is the line that was modified to remove the "[nid:XX]" disambiguator
  }

  drupal_json_output($matches);
}