サブフォルダからDiscourseを提供する、ログインがホームページにリダイレクトされる

zogstrip · 2025 年 12 月 10 日午後 10:47

@here すみません、問題を再現し修正できたと思います

github.com/discourse/discourse

FIX: login redirect to root path in subfolder setup

main ← login-redirect-and-subfolder-equals-boom

opened 10:46PM - 10 Dec 25 UTC

ZogStriP

+43 -16

When Discourse is served from a subfolder (e.g., /forum), logging in from the lo…gin page itself would incorrectly redirect users to the root domain (/) instead of the subfolder root (/forum/). The issue had two causes: 1. The login path check in `extract_redirect_param` used the Rails `login_path` helper which returns "/login" without the subfolder prefix. When the browser sent the full path "/forum/login", the check `starts_with?("/login")` failed to match, treating it as a valid redirect target instead of rejecting it. 2. The `enter` method didn't apply the subfolder prefix when falling back to the root path "/". Fixed by: - Building the full login path with `Discourse.base_path` for accurate matching in subfolder setups - Wrapping the fallback "/" with `path()` in `enter` to respect the subfolder configuration - Extracting redirect validation into `valid_redirect_uri?` for clarity Ref - meta/t/386619

トピック		返信	表示
Discourse sign in redirects to root directory instead of subfolder Support subfolder	8	91	2025 年 12 月 10 日
Regression in login behavior Bug	5	694	2018 年 6 月 26 日
Discourse rewriting url path behaviour failing due to subfolder Bug subfolder	10	1499	2018 年 8 月 12 日
Home logo url points to the root of the domain even in a subfolder install? Dev	5	1775	2016 年 10 月 4 日
Recent Changes Breaking Subfolder Setup? Bug	15	1162	2020 年 2 月 12 日

サブフォルダからDiscourseを提供する、ログインがホームページにリダイレクトされる

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