Gregory's Server@Gargron Really? But according to the code, it seems that `current_user.locale` (if signed in) and `session[:locale]` will be considered first.
Also, I just did a local test and failed to lock the language for new user(it will use `session[:locale]` instead)
@zyn_gra Logged in users can still change the locale. session[:locale] is set once per session with consideration for DEFAULT_LOCALE