Rails order by association field

Question

I have the following models

class User
  attr_accesible :first_name, :phone_number
  has_one :user_extension
end

class UserExtension
  attr_accessible :comp         


        

Answer 1

Merge can make the query smaller/saner-looking, and it benchmarked faster for me in Rails 4.x:

@users = User.joins(:user_extension).merge(UserExtension.order(company: :desc))