# "Set locale from param" and content localisation issue

**URL:** https://meta.discourse.org/t/set-locale-from-param-and-content-localisation-issue/387547
**Category:** Bug
**Tags:** content-localization
**Created:** [November 4, 2025, 10:59am UTC](https://meta.discourse.org/t/set-locale-from-param-and-content-localisation-issue/387547 "2025-11-04T10:59:30Z")
**Posts on this page:** 1
**Showing post:** 1

<div class="post-metadata">

### Author: ![MiikkaLaitila](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/miikkalaitila/32/462245_2.png) [@MiikkaLaitila](https://meta.discourse.org/u/MiikkaLaitila)
#### Post date: [November 4, 2025, 10:59am UTC](https://meta.discourse.org/t/set-locale-from-param-and-content-localisation-issue/387547/1 "2025-11-04T10:59:30Z")

</div>

We’ve been rather happy with the content localisation, but found an issue regarding  
`Set locale from param` setting.

It should allow setting an anonymous user’s locale via the ‘tl’ URL param, e.g. ?tl=es. Currently if we put e.g. ?tl=fi to forum URL, it correctly shows the UI and forum headers in Finnish for anonymous user. Yet if I click any thread open, it shows them incorrectly according browser’s Accept language header (English in this case).

If I understood correctly, priority should be ?lang= in the URL, then the locale cookie, then Accept-Language? Still at least in our case it seems that using ?tl only changes UI language but not shown translations.

As for the context what we’re trying to achieve:

- Guide users to Swedish forum version (tl=sv) from our .se site, and to Finnish version (tl=fi) from our .fi site and so on.
- For anonymous users browsing globally, it would be nice to have the browser locale header setting as default if we or user haven’t pre-selected the language.

Any thoughts?

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_[View the full topic](https://meta.discourse.org/t/set-locale-from-param-and-content-localisation-issue/387547)._