/**
  * Force an update of the user count for all channels.
  * @todo may do other things in the future? update for now.
  */
 public function channel_user_count($action = 'update', $id = null)
 {
     MyChannel::update_user_count($id);
     $_SESSION['messages'][] = 'User counts updated.';
     PSU::redirect($GLOBALS['BASE_URL'] . '/admin/');
 }