views.py 文件源码

def setlang(request):
    """
    Sets a user's language preference and redirects to a given URL or, by default, back to the previous page.
    """
    next = request.REQUEST.get('next')
    if not is_safe_url(url=next, host=request.get_host()):
        next = request.META.get('HTTP_REFERER')
        if not is_safe_url(url=next, host=request.get_host()):
            next = '/'
    response = redirect(next)

    lang_code = request.REQUEST.get('language', None)
    if lang_code and check_for_language(lang_code):
        if hasattr(request, 'session'):
            request.session[LANGUAGE_SESSION_KEY] = lang_code
        else:
            response.set_cookie(settings.LANGUAGE_COOKIE_NAME, lang_code,
                                max_age=settings.LANGUAGE_COOKIE_AGE,
                                path=settings.LANGUAGE_COOKIE_PATH,
                                domain=settings.LANGUAGE_COOKIE_DOMAIN)

    return response