gist: 152257


  
    
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              class SoundWalk < ActiveRecord::Base
  belongs_to :user
 
  named_scope :from_users, lambda{ |users| {:conditions => ["user_id IN (?)", users.collect{|u| u.id}]} }
end
 
class User < ActiveRecord::Base
  def friend_soundwalks
    SoundWalk.from_users(self.friends)
  end
end
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