[Django]-Django – Could i18n.set_language() store in User profile

See How to override a view from an external Django app -> How to override without forking -> Overriding a view to make “i18n.set_language() to store the language into an eventually available user profile”

Copy django-user-accounts middleware and change get_language_for_user.

Place the middleware after django.middleware.locale.LocaleMiddleware, because this sets the default language based on the request so that’s still useful for anonymous visitors, so you want this executed before your own middleware.