function user_block_view

Implements hook_block_view().

File

modules/user/user.module, line 1443

Code

function user_block_view($delta = '') {
    global $user;
    $block = array();
    switch ($delta) {
        case 'login':
            // For usability's sake, avoid showing two login forms on one page.
            if (!$user->uid && !(arg(0) == 'user' && !is_numeric(arg(1)))) {
                $block['subject'] = t('User login');
                $block['content'] = drupal_get_form('user_login_block');
            }
            return $block;
        case 'new':
            if (user_access('access content')) {
                // Retrieve a list of new users who have subsequently accessed the site successfully.
                $items = db_query_range('SELECT uid, name FROM {users} WHERE status <> 0 AND access <> 0 ORDER BY created DESC', 0, variable_get('user_block_whois_new_count', 5))->fetchAll();
                $output = theme('user_list', array(
                    'users' => $items,
                ));
                $block['subject'] = t('Who\'s new');
                $block['content'] = $output;
            }
            return $block;
        case 'online':
            if (user_access('access content')) {
                // Count users active within the defined period.
                $interval = REQUEST_TIME - variable_get('user_block_seconds_online', 900);
                // Perform database queries to gather online user lists. We use s.timestamp
                // rather than u.access because it is much faster.
                $authenticated_count = db_query("SELECT COUNT(DISTINCT s.uid) FROM {sessions} s WHERE s.timestamp >= :timestamp AND s.uid > 0", array(
                    ':timestamp' => $interval,
                ))->fetchField();
                $output = '<p>' . format_plural($authenticated_count, 'There is currently 1 user online.', 'There are currently @count users online.') . '</p>';
                // Display a list of currently online users.
                $max_users = variable_get('user_block_max_list_count', 10);
                if ($authenticated_count && $max_users) {
                    $items = db_query_range('SELECT u.uid, u.name, MAX(s.timestamp) AS max_timestamp FROM {users} u INNER JOIN {sessions} s ON u.uid = s.uid WHERE s.timestamp >= :interval AND s.uid > 0 GROUP BY u.uid, u.name ORDER BY max_timestamp DESC', 0, $max_users, array(
                        ':interval' => $interval,
                    ))->fetchAll();
                    $output .= theme('user_list', array(
                        'users' => $items,
                    ));
                }
                $block['subject'] = t('Who\'s online');
                $block['content'] = $output;
            }
            return $block;
    }
}