function recently_read_exit in Recently Read 6

Same name and namespace in other branches

1. 7 recently_read.module \recently_read_exit()
2. 7.2 recently_read.module \recently_read_exit()

File

./recently_read.module, line 107

Recently read module file. Displays a history of recently read nodes by currently logged in user.

Code

function recently_read_exit() {
  global $user;
  drupal_bootstrap(DRUPAL_BOOTSTRAP_PATH);

  // track history for authenticated user
  if (arg(0) == 'node' && is_numeric(arg(1)) && arg(2) == '') {
    $nid = arg(1);

    // get node type
    $type = db_result(db_query('SELECT type FROM {node} WHERE nid = %d', $nid));

    // track history for authenticated user
    if (recently_read_is_enabled($type) && $user->uid) {
      $record = new stdClass();
      $record->nid = $nid;
      $record->type = $type;
      $record->uid = $user->uid;
      $record->timestamp = time();
      $count = db_result(db_query('SELECT COUNT(*) FROM {recently_read_nodes} WHERE nid = %d AND uid = %d AND type = "%s"', $nid, $user->uid, $type));

      // a node has been viewed before, make an update
      if ($count > 0) {
        drupal_write_record('recently_read_nodes', $record, array(
          'nid',
          'uid',
        ));
      }
      else {
        drupal_write_record('recently_read_nodes', $record);
      }
    }

    // track history for anonymous user
    if (recently_read_is_enabled($type) && !$user->uid && variable_get('recently_read_anonymous_enabled', FALSE)) {
      $key = "recently_read-{$type}";
      if (!isset($_SESSION[$key])) {
        $_SESSION[$key] = array();
      }

      // remove previous entry, if present
      unset($_SESSION[$key][$nid]);

      // add new entry at the beginning of array
      $title = db_result(db_query('SELECT title FROM {node} WHERE nid = %d', $nid));
      $entry = array(
        'nid' => $nid,
        'title' => $title,
        'type' => $type,
        'timestamp' => time(),
      );
      $_SESSION[$key] = array(
        $nid => $entry,
      ) + $_SESSION[$key];
      while (count($_SESSION[$key]) > variable_get('recently_read_max_entries', 10)) {
        array_pop($_SESSION[$key]);
      }
    }

    // remove old entries
    $nids = array();
    $result = db_query("SELECT nid FROM {recently_read_nodes} WHERE uid = %d and type = '%s' ORDER BY timestamp DESC LIMIT %d,1000", $user->uid, $type, variable_get('recently_read_max_entries', 10) + 1);
    while ($nid = db_result($result)) {
      $nids[] = $nid;
    }
    if (count($nids)) {
      $placeholders = implode(',', array_fill(0, count($nids), "%d"));
      db_query("DELETE FROM {recently_read_nodes} WHERE uid = %d AND nid IN({$placeholders})", array_merge((array) $user->uid, $nids));
    }
  }
}