Rails - May 2014 - Rails 4 has_and_belongs_to_many specific order

I'm trying to set a specific order to an association, but I keep getting 
the default scope order definition.

What am I missing?


class Pattern < ActiveRecord::Base

  default_scope { order('sort, title') }

  has_and_belongs_to_many :children,

    :class_name => 'Pattern', 

    :join_table => 'patterns_patterns',

    :association_foreign_key => 'child_id',

    :foreign_key => 'parent_id',

    :order => 'patterns_patterns.updated_at'

end


SELECT "patterns".* FROM "patterns" INNER JOIN
"patterns_patterns" ON
"patterns"."id" =
"patterns_patterns"."child_id" WHERE
"patterns_patterns"."parent_id" = ?  ORDER BY sort, title 
[["parent_id",
1]]

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