<?php
class User extends AppModel {

  var $hasMany =
    array('UserOption',
	  'Membership',
	  );

  static $current_user_id;

  function currentUserId() {
    if (!empty(self::$current_user_id))
      return self::$current_user_id;

    if (!empty($_SERVER['REMOTE_USER']))
      $login = $_SERVER['REMOTE_USER'];
    else
      $login = null;

    $user = $this->find
      ('first',
       array('recursive' => -1,
	     'conditions' => compact('login')));

    if (!empty($user['User']['id']))
      self::$current_user_id = $user['User']['id'];
    else
      // We must force a stop here, since this is typically
      // called very early on, and so will cause a recursive
      // crash as we try to render the internal error and
      // again stumble on this problem.
      $this->INTERNAL_ERROR('UNKNOWN USER', 0, true);

    return self::$current_user_id;
  }

}