アーカイブされたトピックで「いいね」できるのは、いいねや反応が一つもない投稿のみです

zogstrip · 2026 年 4 月 1 日午後 12:42

@NateDhaliwal さん、@Moin さん、ありがとうございます。アーカイブ済みトピックの処理に関するリアクションのロジックに誤りがあったようです。

github.com/discourse/discourse

FIX: Prevent reactions on posts in archived topics (#39038)

main ← fix/reactions-archived-topic-like-button

opened 12:41PM - 01 Apr 26 UTC

ZogStriP

+92 -14

When a post in an archived topic has no existing likes, the backend omits the li…ke entry from `actions_summary` (no count, no `can_act`, no `acted`), making `likeAction` null on the frontend. Core's like button handles this correctly (renders as disabled), but the reactions plugin — which replaces core's like button — had guards that checked `likeAction && !(canToggle || can_undo)`. When `likeAction` was null, the guard was bypassed, allowing clicks that triggered a 403 from the backend with a misleading "too long ago" error message. Posts with existing likes were unaffected since `likeAction` existed with `canToggle: false`, and the guard worked as intended. This commit: - Flips the `toggleFromButton` guard from `likeAction && ...` to `!likeAction || ...` so null likeAction blocks the interaction - Reorders the `toggle()` condition to check `likeAction?.canToggle` first, preventing reactions via the emoji picker - Adds an early return in `pointerOver` when `!likeAction?.canToggle` to prevent the reaction picker from opening on hover - Adds optional chaining in the picker's `reactionInfo` getter to fix a TypeError crash on `post.likeAction.canToggle` when null - Uses the server error message in `_extractErrors` when available instead of a hardcoded misleading string, and updates the fallback translation to a generic message https://meta.discourse.org/t/399681

トピック		返信	表示
Like button does not work on archived topics Bug reactions	23	1468	2022 年 8 月 22 日
Your own liked posts have a like button Bug	9	865	2022 年 8 月 22 日
When a topic is archived and like button pressed it shows notification UX	0	415	2022 年 5 月 25 日
Missing icon for likes on archived topics UX	9	1601	2019 年 6 月 23 日
Like button not appearing on archived topics Support	3	2627	2019 年 1 月 16 日

アーカイブされたトピックで「いいね」できるのは、いいねや反応が一つもない投稿のみです

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