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9 lines
272 B
Ruby
9 lines
272 B
Ruby
class Book < ActiveRecord::Base
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has_many :authors
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has_many :citations, :foreign_key => 'book1_id'
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has_many :references, -> { uniq }, :through => :citations, :source => :reference_of
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has_many :subscriptions
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has_many :subscribers, :through => :subscriptions
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end
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