Same post, multiple languages ?

This is similar to my problem, so I’m bumping this thread (sorry for the hijack).

I don’t want to localise my custom post type, because it just contain numbers like length and weight as custom fields as well as some images. But I do want the theme and menu to be localised when viewing one of these posts.

Is this possible? Currently it only displays the menu of the default language.

I’m using the latest versions of WordPress and Polylang.

Nick, it sounds like the same question as this:
https://www.ads-software.com/support/topic/make-a-post-international?replies=3
Chouby replied to say it’s not possible.

Neil, it could be possible. Check the Polylang developer page https://polylang.wordpress.com/documentation/documentation-for-developers/general/

You could write a function to detect the locale and then display a menu_fr for example. https://polylang.wordpress.com/documentation/setting-up-a-wordpress-multilingual-site-with-polylang/navigations-menus/

But perhaps this is what the plugin is already doing.