first argument should be an array in _user_reference_potential_references_standard() (line 864 of user_reference.module)

Hi All,

We recently upgrade a Drupal 6 site to Drupal 7, and we are getting a warning on our custom content types have have a user-reference field. It only appears when you are editing the content, not when it is being displayed. The error is:

Warning: array_filter() [function.array-filter]:
    The first argument should be an array in
        _user_reference_potential_references_standard()
(line 864 of
{drupal-path}\sites\all\modules\references\user_reference\user_reference.module).

As far as I can tell, everything is working. You can edit the content, changed the user-reference field, and your changes are saved.

I opened up user_reference.module and looked at the offending line. An excerpt is below. Line 864 is the line that starts with $filter_status =. The problem is that $field['settings']['referenceable_status'] is an integer with value 1, and not an array, and array_filter takes an array as a parameter.

Any idea what's going on? Is this a bug or a configuration issue? How can I fix this?

I'm on Drupal 7.12, and References 7.x-2.0

/**
 * Helper function for user_reference_potential_references().
 *
 * List of referenceable users defined by user role and status.
 */
function _user_reference_potential_references_standard($field, $options) {
  // Avoid useless work.
  $filter_roles = array_filter($field['settings']['referenceable_roles']);
  $filter_status = array_filter($field['settings']['referenceable_status']);
  if (!count($filter_status) && !count($filter_roles)) {
    return array();
  }