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a guest Jan 18th, 2019 62 Never
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  1. class Parent < ActiveRecord::Base
  2.   class << self; alias_method :old_group, :group; end
  3.   scope :group, lambda { |g|
  4.     old_group("#{table_name}.#{g}")
  5.   }
  6. end
  7.  
  8. Parent.join(:child).group(:name)
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