locale.py 文件源码

def process_response(self, request, response):
        language = translation.get_language()
        language_from_path = translation.get_language_from_path(request.path_info)
        if (response.status_code == 404 and not language_from_path
                and self.is_language_prefix_patterns_used()):
            urlconf = getattr(request, 'urlconf', None)
            language_path = '/%s%s' % (language, request.path_info)
            path_valid = is_valid_path(language_path, urlconf)
            if (not path_valid and settings.APPEND_SLASH
                    and not language_path.endswith('/')):
                path_valid = is_valid_path("%s/" % language_path, urlconf)

            if path_valid:
                script_prefix = get_script_prefix()
                language_url = "%s://%s%s" % (
                    request.scheme,
                    request.get_host(),
                    # insert language after the script prefix and before the
                    # rest of the URL
                    request.get_full_path().replace(
                        script_prefix,
                        '%s%s/' % (script_prefix, language),
                        1
                    )
                )
                return self.response_redirect_class(language_url)

        if not (self.is_language_prefix_patterns_used()
                and language_from_path):
            patch_vary_headers(response, ('Accept-Language',))
        if 'Content-Language' not in response:
            response['Content-Language'] = language
        return response