from django.http import HttpResponsePermanentRedirect
from google.appengine.api import users

def loginrequired(func):
    def redirect_to_login(request):
        return HttpResponsePermanentRedirect(users.create_login_url(request.get_full_path()))

    user = users.get_current_user()
    if user:
        return func
    else:
        return redirect_to_login

@loginrequired
def i_am_protected(request):
    pass # clearly, this is a top secret view that needs protecting.