「トピック名提案」AIヘルパー使用時に500内部サーバーエラーが発生

zogstrip · 2026 年 10 月 16 日午後 2:54

報告ありがとうございます @Frully 以下のPRで修正されます

github.com/discourse/discourse

FIX: Return no title suggestions instead of a 500 when the reply isn't a list (#44697)

main ← fix/ai-helper-title-suggestions-non-list

merged 03:54PM - 16 Oct 26 UTC

ZogStriP

+37 -3

Previously, title suggestions called `flatten` on whatever `generate_prompt` ret…urned, assuming an Array. The shape actually depends on the agent picked in `ai_helper_title_suggestions_agent` (any agent is accepted, and one without an array response format replies with plain text) and on the provider honouring the schema. Any non-Array reply made `suggest_title` fail with `undefined method 'flatten' for an instance of String`, surfaced as a generic 500 by the hijacked request. This change normalizes the reply where a list is expected, keeping only non-blank string suggestions, so a reply that isn't a list shows "No suggestions available" instead of erroring. It also drops the array clean-up in `generate_prompt`, which this now covers. Reported in https://meta.discourse.org/t/414790

トピック		返信	表示
Suggested Topics - Title & Content based Suggestions Feature suggested-topics	16	3600	2023 年 9 月 3 日
Feature request for ai title generator: toggle title/tag/category Feature ai	2	183	2026 年 6 月 5 日
Discourse AI Topic Summary :robot: Plugin ai	161	11939	2025 年 7 月 18 日
500 error when using translate, proofread and generate title of ai helper Bug ai , ai-helper	1	119	2024 年 7 月 31 日
Discourse Topic Deletion Fails With Error Support	5	221	2024 年 12 月 7 日

「トピック名提案」AIヘルパー使用時に500内部サーバーエラーが発生

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