08/04/28 23:58:40
>>45
class_name で指定。
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class Item < ActiveRecord::Base
belongs_to owner, :class_name => People, :foreign_key => :owner_id
belongs_to register, :class_name => People, :foreign_key => :register_id
belongs_to collector, :class_name => People, :foreign_key => :collector_id
end