def save(self, new_data, request, user_to = None):
# current date
datetime_now = datetime.now()
# save topic
topic = Topic()
topic.theme = new_data['theme']
topic.user1 = request.user
if user_to is None:
user_to = User.objects.get(id = new_data['userToId'])
topic.user2 = user_to
topic.create_on = datetime_now
topic.update_on = datetime_now
topic.save()
# save message
message = Message()
message.user_from = topic.user1
message.user_to = topic.user2
message.topic = topic
message.body = new_data['body']
message.sent_on = datetime.now()
message.save()
return message
