ActiveRecord::Aggregations::ClassMethods

Ruby on Rails 8.0.3 Module ActiveRecord::Aggregations::ClassMethods activerecord/lib/active_record/aggregations.rb Active Record Aggregations¶ ↑ Active Record implements aggregation through a macro-like class method called composed_of for representing attributes as value objects. It expresses relationships like “Account [is] composed of Money [among other things]” or “Person [is] composed of [an]

[nacika_inscatolare]

rails value-object

[iga_k]

composed_of リファレンス

[suginoy]

initialize を名前付き引数で 定義できない。 “By default value objects are initialized by calling the new constructor of the value class passing each of the mapped attributes, in the order specified by the :mapping option, as arguments.”