search for: set_last_post

...ns would be topic-related. In the topic model I have the following associations: ----- has_many(:posts) has_one(:last_post, {:class_name => ''Post''}) ----- Next, in the same model, I have the following function which I call whenever a new post is added to a topic: ----- def set_last_post self.last_post = self.posts.last end ----- Posts are added properly to the topics (@topic.posts << @post; @topic.save), yet somehow, every topic I add has NULL for the last_post_id. Please help, I''m losing my mind. -- Posted via http://www.ruby-forum.com/.