"this is the locale selecting middleware that will look at accept headers"

from django.utils.cache import patch_vary_headers

from django.utils import translation

class LocaleMiddleware(object):

    """

    This is a very simple middleware that parses a request

    and decides what translation object to install in the current

    thread context. This allows pages to be dynamically

    translated to the language the user desires (if the language

    is available, of course).

    """

    def process_request(self, request):

        language = translation.get_language_from_request(request)

        translation.activate(language)

        request.LANGUAGE_CODE = translation.get_language()

    def process_response(self, request, response):

        patch_vary_headers(response, ('Accept-Language',))

        if 'Content-Language' not in response:

            response['Content-Language'] = translation.get_language()

        translation.deactivate()

        return response