function userreference_field in Content Construction Kit (CCK) 6.3

Same name and namespace in other branches

1. 5 userreference.module \userreference_field()
2. 6 modules/userreference/userreference.module \userreference_field()
3. 6.2 modules/userreference/userreference.module \userreference_field()

Implementation of hook_field().

File

modules/userreference/userreference.module, line 186

Defines a field type for referencing a user from a node.

Code

function userreference_field($op, &$node, $field, &$items, $teaser, $page) {
  switch ($op) {
    case 'validate':

      // Extract uids to check.
      $ids = array();
      foreach ($items as $delta => $item) {
        if (is_array($item) && !empty($item['uid'])) {
          if (is_numeric($item['uid'])) {
            $ids[] = $item['uid'];
          }
          else {
            $error_element = isset($item['_error_element']) ? $item['_error_element'] : '';
            if (is_array($item) && isset($item['_error_element'])) {
              unset($item['_error_element']);
            }
            form_set_error($error_element, t('%name: invalid input.', array(
              '%name' => t($field['widget']['label']),
            )));
          }
        }
      }

      // Prevent performance hog if there are no ids to check.
      if ($ids) {
        $refs = _userreference_potential_references($field, '', NULL, $ids);
        foreach ($items as $delta => $item) {
          if (is_array($item)) {
            $error_element = isset($item['_error_element']) ? $item['_error_element'] : '';
            if (is_array($item) && isset($item['_error_element'])) {
              unset($item['_error_element']);
            }
            if (!empty($item['uid']) && !isset($refs[$item['uid']])) {
              form_set_error($error_element, t('%name: invalid user.', array(
                '%name' => t($field['widget']['label']),
              )));
            }
          }
        }
      }
      return $items;
  }
}