def schedule_user_slot_manage(request, presentation_id):
if request.method == "POST":
if request.POST["action"] == "add":
try:
UserBookmark.objects.create(user=request.user, presentation_id=presentation_id)
except IntegrityError:
pass
elif request.POST["action"] == "delete":
UserBookmark.objects.filter(user=request.user, presentation=presentation_id).delete()
else:
return HttpResponse(status=400)
db.delete(cache_key_user(request.user))
return HttpResponse(status=202)
else:
return HttpResponseNotAllowed(["POST"])
def render(self, context):
if db:
user = context["user"]
key = cache_key_user(user) if user.is_authenticated() else cache_key()
output = db.get(key)
if output is None:
with db.lock("%s-lock" % key):
# check for cached data if we lost lock acquisition and
# if nothing was returned we can be sure we own the lock
output = db.get(key)
if output is None:
output = self.nodelist.render(context)
db.set(key, output)
else:
output = self.nodelist.render(context)
return output
