📄 composer.rb
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class Composer < ActiveRecord::Base has_many :works, :order => "title" def publishers works.editions.publishers.uniq end def whole_name "#{first_name} #{middle_name} #{last_name}" end def editions works.map {|work| work.editions }.flatten.uniq end def Composer.sales_rankings r = Hash.new(0) Work.sales_rankings.map do |work,sales| r[work.composer.id] += sales end r endend
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