/**
  * Signs in the user on the application.
  *
  * @param sfGuardUser $user The sfGuardUser id
  * @param boolean $remember Whether or not to remember the user
  * @param Doctrine_Connection $con A Doctrine_Connection object
  */
 public function signIn($user, $auth_key = null, $con = null)
 {
     // signin
     $this->setApiUserid($user->getId());
     $this->setAuthenticated(true);
     $this->clearCredentials();
     $this->addCredentials($user->getAllPermissionNames());
     // save last login
     $user->setLastLogin(date('Y-m-d H:i:s'));
     $user->save($con);
     // Set login messages
     $message = array();
     foreach ($user->getUndisplayedLoginMessages() as $message) {
         $messages[] = $message->getMessage();
         $message->setDisplayed(true);
         $message->save();
     }
     if (count($message) > 0) {
         $this->setFlash('login', $messages);
     }
     // remember?
     if ($auth_key) {
         $this->setApiAuthkey($auth_key);
         $api_key = sfConfig::get('app_web_app_api_key');
         $api = ApiKeyTable::getInstance()->findOneBy('api_key', $api_key);
         $auth_key = sfGuardUserAuthKeyTable::getInstance()->getMostRecentValidByApiKeyIdAndAuthKey($api->getIncremented(), $auth_key);
         $expires = strtotime($auth_key->getExpiresAt());
         // make key as a cookie
         $remember_cookie = sfConfig::get('app_sf_guard_plugin_remember_cookie_name', 'sfRemember');
         sfContext::getInstance()->getResponse()->setCookie($remember_cookie, $auth_key->getAuthKey(), $expires);
     }
 }