From 4a2a44831babe450c1b5b10b3a43c843fa442dcd Mon Sep 17 00:00:00 2001
From: かっこかり <67428053+kakkokari-gtyih@users.noreply.github.com>
Date: Thu, 23 Nov 2023 19:34:14 +0900
Subject: fix(backend): 招待コードが使い回せる問題を修正 (#12423)
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* (fix) 招待コードを一度のみ利用できるように

* Update Changelog
---
 packages/backend/src/server/api/SignupApiService.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'packages/backend/src/server/api/SignupApiService.ts')

diff --git a/packages/backend/src/server/api/SignupApiService.ts b/packages/backend/src/server/api/SignupApiService.ts
index d6f4df7f13..753984ef52 100644
--- a/packages/backend/src/server/api/SignupApiService.ts
+++ b/packages/backend/src/server/api/SignupApiService.ts
@@ -126,7 +126,7 @@ export class SignupApiService {
 				code: invitationCode,
 			});
 
-			if (ticket == null) {
+			if (ticket == null || ticket.usedById != null) {
 				reply.code(400);
 				return;
 			}
-- 
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