function taxonomy_access_autocomplete in Taxonomy Access Control 7

Autocomplete menu callback: filter allowed terms by create, not list.

For now we essentially duplicate the code from taxonomy.module, because it calls drupal_json_output without providing the logic separately.

See also

http://drupal.org/node/1169964

taxonomy_autocomplete()

Related topics

1 string reference to 'taxonomy_access_autocomplete'

taxonomy_access_menu in ./taxonomy_access.module

Implements hook_menu().

File

./taxonomy_access.create.inc, line 397

Implements the Add Tag (create) grant on editing forms.

Code

function taxonomy_access_autocomplete($field_name, $tags_typed = '') {

  // Enforce that list grants do not filter the autocomplete.
  taxonomy_access_disable_list();
  $field = field_info_field($field_name);

  // The user enters a comma-separated list of tags. We only autocomplete the last tag.
  $tags_typed = drupal_explode_tags($tags_typed);
  $tag_last = drupal_strtolower(array_pop($tags_typed));
  $matches = array();
  if ($tag_last != '') {

    // Part of the criteria for the query come from the field's own settings.
    $vids = array();
    $vocabularies = taxonomy_vocabulary_get_names();
    foreach ($field['settings']['allowed_values'] as $tree) {
      $vids[] = $vocabularies[$tree['vocabulary']]->vid;
    }
    $query = db_select('taxonomy_term_data', 't');
    $query
      ->addTag('translatable');
    $query
      ->addTag('term_access');

    // Do not select already entered terms.
    if (!empty($tags_typed)) {
      $query
        ->condition('t.name', $tags_typed, 'NOT IN');
    }

    // Select rows that match by term name.
    $tags_return = $query
      ->fields('t', array(
      'tid',
      'name',
    ))
      ->condition('t.vid', $vids)
      ->condition('t.name', '%' . db_like($tag_last) . '%', 'LIKE')
      ->range(0, 10)
      ->execute()
      ->fetchAllKeyed();

    // Unset suggestions disallowed by create grants.
    $disallowed = taxonomy_access_create_disallowed(array_keys($tags_return));
    foreach ($disallowed as $tid) {
      unset($tags_return[$tid]);
    }
    $prefix = count($tags_typed) ? drupal_implode_tags($tags_typed) . ', ' : '';
    $term_matches = array();
    foreach ($tags_return as $tid => $name) {
      $n = $name;

      // Term names containing commas or quotes must be wrapped in quotes.
      if (strpos($name, ',') !== FALSE || strpos($name, '"') !== FALSE) {
        $n = '"' . str_replace('"', '""', $name) . '"';
      }
      $term_matches[$prefix . $n] = check_plain($name);
    }
  }
  drupal_json_output($term_matches);
}