Rails Ruby on Rails

I'm having problems with eager loading. I've posted a sample project here:

https://github.com/rdetert/Rails-Test/tree/master/eager_loading/

From the README:

I'm using an alternative to the built-in polymorphism to take advantage of DB level integrity.

Assume another table called posts that has a column, posts.commentable_id

I AM TRYING TO EAGERLY LOAD ALL COMMENTS GIVEN TO A POST TOPIC, INCLUDING USER INFO AND WHETHER OR NOT THEY HAVE VOTED ON THE COMMENT.

To Install:

$ rake db:migrate
$ rake db:seed

$ rails c

ruby-1.8.7-p299 > Comment.with_eager_votes(User.first).with_eager_userdata.where(:commentable_id => 1).to_sql

 => "SELECT * FROM \"comments\" INNER JOIN \"votable\" ON \"votable\".\"id\" = \"comments\".\"votable_id\" INNER JOIN \"users\" ON \"users\".\"id\" = \"comments\".\"user_id\" LEFT OUTER JOIN votes ON votes.votable_id = votable.id AND votes.user_id=1 WHERE (\"comments\".\"commentable_id\" = 1)"

This is the correct query and returns the correct data set
However, when votes are null, it does not behaves as expected. The eagerly loaded associations are also null.

IN THIS RESULT SET, THE USER HAS NOT VOTED ONLY ON THE FIRST COMMENT.

ruby-1.8.7-p299 > @comments = Comment.with_eager_votes(User.first).with_eager_userdata.where(:commentable_id => 1)

ruby-1.8.7-p299 > @comments.first.user       # => WRONG
 => nil 

ruby-1.8.7-p299 > @comments.second.user
 => #<User id: 1, name: "Big Chief", created_at: "2010-11-30 10:51:19", updated_at: "2010-11-30 10:51:19"> 

ruby-1.8.7-p299 > @comments.third.user
 => #<User id: 1, name: "Big Chief", created_at: "2010-11-30 10:51:19", updated_at: "2010-11-30 10:51:19"> 

ruby-1.8.7-p299 >