/**
  * @see Command::execute()
  */
 public function execute(CommandContext $context)
 {
     if (!UserStatus::isAdmin() || !Current_User::allow('hms', 'hall_attributes')) {
         PHPWS_Core::initModClass('hms', 'exception/PermissionException.php');
         throw new PermissionException('You do not have permission to edit halls.');
     }
     // Make sure a hall ID was set
     $hallId = $context->get('hallId');
     if (is_null($hallId)) {
         throw new InvalidArgumentException('Missing hall ID.');
     }
     $viewCmd = CommandFactory::getCommand('EditResidenceHallView');
     $viewCmd->setHallId($hallId);
     PHPWS_Core::initModClass('hms', 'HMS_Residence_Hall.php');
     // Create the hall object given the hall id
     $hall = new HMS_Residence_Hall($hallId);
     if (!$hall) {
         NQ::simple('hms', hms\NotificationView::ERROR, 'Invalid hall.');
         $viewCmd->redirect();
     }
     if ($context->get('tab') == 'settings') {
         // Compare the hall's gender and the gender the user selected
         // If they're not equal, call 'can_change_gender' public function
         if ($hall->gender_type != $_REQUEST['gender_type']) {
             if (!$hall->can_change_gender($_REQUEST['gender_type'])) {
                 NQ::simple('hms', hms\NotificationView::ERROR, 'Incompatible gender detected. No changes were made.');
                 $viewCmd->redirect();
             }
         }
         // Grab all the input from the form and save the hall
         $hall->hall_name = $context->get('hall_name');
         $hall->gender_type = $context->get('gender_type');
         // Set the defaults for the check boxes
         $context->setDefault('air_conditioned', 0);
         $context->setDefault('is_online', 0);
         $context->setDefault('meal_plan_required', 0);
         $context->setDefault('assignment_notifications', 0);
         $hall->air_conditioned = $context->get('air_conditioned');
         $hall->is_online = $context->get('is_online');
         $hall->meal_plan_required = $context->get('meal_plan_required');
         $hall->assignment_notifications = $context->get('assignment_notifications');
         $hall->setPackageDeskId($context->get('package_desk'));
     } else {
         if ($context->get('tab') == 'images') {
             $hall->exterior_image_id = $context->get('exterior_image_id');
             $hall->other_image_id = $context->get('other_image_id');
             $hall->map_image_id = $context->get('map_image_id');
             $hall->room_plan_image_id = $context->get('room_plan_image_id');
         }
     }
     $result = $hall->save();
     if (!$result || PHPWS_Error::logIfError($result)) {
         NQ::simple('hms', hms\NotificationView::ERROR, 'There was a problem saving the Residence Hall. No changes were made.');
         $viewCmd->redirect();
     }
     NQ::simple('hms', hms\NotificationView::SUCCESS, 'The Residence hall was updated successfully.');
     $viewCmd->redirect();
 }