8 lines
283 B
Ruby
8 lines
283 B
Ruby
class Topic < ActiveRecord::Base
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validates_presence_of :author_name
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has_many :books
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belongs_to :parent, :class_name => "Topic"
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composed_of :description, :mapping => [ %w(title title), %w(author_name author_name)], :allow_nil => true, :class_name => "TopicDescription"
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end
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