rails: sort a has_many using :order is not working due to order by timestamp

I have a rails model let say User with a has many relationship with Post. Post contains an attribute named position that stores the position (acts_as_list gem). The position stores the position on the user Post list (the order is not due to creation/modification of the post). Moreover, the Post has timestamps stored (t.timestamps in the migration)

So I have defined the following in User.rb:

has_many :post, :order => "position", :dependent => :destroy

However, when i do a User.first.posts The posts are not ordered by position. I've cheked and the sql being queries contains the following:

ORDER BY post.created_at DESC, position

So the created_at is still being used.

How can I sort by position and not use the created_at attribute?

Thanks in advance!

SOLUTION I had a default scope degined in Post that was creating the undesired order by.

Problem solved

You can use a default scope:

class Post < ActiveRecord::Base
  scope :by_position, order("position ASC")
  default_scope by_position
  #...
end

Then @user.posts should return a list ordered by the position (ASC).

Also, the following should be working for you: (plural on post)

has_many :posts, :dependent => :destroy, :order => "posts.position ASC"