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zogstrip · 2026 年4 月 1 日 12:42

感谢 @NateDhaliwal 和 @Moin，看来在处理已归档主题时，表情反应功能存在逻辑错误。

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

话题		回复	浏览量
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

在已归档的主题中，只有没有点赞或反应的帖子才能被“点赞”

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