dblog_user_filter.module

<?php

/**
 * Implementation of hook_log_filters_settings().
 */
function dblog_user_filter_log_filters_settings() {
  $settings['username'] = array(
    'title' => 'Username',
    'description' => 'Filters by username with autocompletion.',
    //'page arguments' => array('dblog_user_filter_settings'),
    //'file'           => 'dblog_filters.user.admin.inc',
  );
  return $settings;
}

/**
 * Implementation of hook_log_filters() on behalf of dblog.
 */
function dblog_user_filter_log_filters() {
  if (!dblog_filters_is_enabled('username')) {
    return array();
  }

//  $user_list = array('' => t('- None -'));
  $use_realname = module_exists('realname');
  $result = db_query("SELECT DISTINCT(w.uid) AS x, u.* FROM {watchdog} w INNER JOIN {users} u ON u.uid = w.uid");
  while ($row = db_fetch_object($result)) {
    $user_list[$row->uid] = ($row->uid == 0 || $use_realname) ? theme('username', $row, array('plain' => TRUE)) : $row->name;
  }
  
  // Sort the list by user name.
  asort($user_list);

  $filters['username'] = array(
    'title' => t('Username'),
    'where' => "u.uid = %d",
    'conjunction' => TRUE,
    'options' => $user_list,
    );

  return $filters;
}