5 lines
174 B
Ruby
5 lines
174 B
Ruby
|
class Book < ActiveRecord::Base
|
||
|
|
has_many :citations, :foreign_key => 'book1_id'
|
||
|
|
has_many :references, :through => :citations, :source => :reference_of, :uniq => true
|
||
|
|
end
|