Index: lib/model/DeletedMessagePeer.php
===================================================================
--- lib/model/DeletedMessagePeer.php	(リビジョン 13346)
+++ lib/model/DeletedMessagePeer.php	(作業コピー)
@@ -92,21 +92,27 @@
   public static function deleteMessage($member_id, $message_id, $object_name)
   {
     if ($object_name == 'MessageSendList') {
-        $message = MessageSendListPeer::retrieveByPK($message_id);
+        $criteria->add(MessageSendListPeer::MEMBER_ID, $member_id, Criteria::EQUAL);
+        $criteria->add(MessageSendListPeer::ID, $message_id, Criteria::EQUAL);
+        $message = MessageSendListPeer::doSelect($criteria);
         $deleted_message = DeletedMessagePeer::getDeletedMessageByMessageSendListId($member_id, $message_id);
         if (!$deleted_message) {
           $deleted_message = new DeletedMessage();
         }
         $deleted_message->setMessageSendListId($message_id);
       } else if ($object_name == 'Message') {
-        $message = SendMessageDataPeer::retrieveByPK($message_id);
+        $criteria->add(SendMessageDataPeer::MEMBER_ID, $member_id, Criteria::EQUAL);
+        $criteria->add(SendMessageDataPeer::ID, $message_id, Criteria::EQUAL);
+        $message = SendMessageDataPeer::doSelect($criteria);
         $deleted_message = DeletedMessagePeer::getDeletedMessageByMessageId($member_id, $message_id);
         if (!$deleted_message) {
           $deleted_message = new DeletedMessage();
         }
         $deleted_message->setMessageId($message_id);
       } else if ($object_name == 'DeletedMessage') {
-        $message = DeletedMessagePeer::retrieveByPK($message_id);
+        $criteria->add(DeletedMessagePeer::MEMBER_ID, $member_id, Criteria::EQUAL);
+        $criteria->add(DeletedMessagePeer::ID, $message_id, Criteria::EQUAL);
+        $message = DeletedMessagePeer::doSelect($criteria);
         $deleted_message = null;
       }
       if (!$message) {
Index: lib/action/opMessagePluginMessageActions.class.php
===================================================================
--- lib/action/opMessagePluginMessageActions.class.php	(リビジョン 13346)
+++ lib/action/opMessagePluginMessageActions.class.php	(作業コピー)
@@ -145,9 +145,12 @@
       default :
         throw new LogicException();
     }
-    DeletedMessagePeer::deleteMessage(sfContext::getInstance()->getUser()->getMemberId(),
-                                      $request->getParameter('id'), 
-                                      $objectName);
+    $this->forward404Unless(
+      DeletedMessagePeer::deleteMessage(sfContext::getInstance()->getUser()->getMemberId(),
+        $request->getParameter('id'),
+        $objectName
+      )
+    );
     
     $this->redirect('@'.$messageType.'List');
   }