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Copy Source | Copy HTML class Person < ActiveRecord::Base validates_presence_of :first_name, :last_name end Чтобы Ñделать то же Ñамое на обыкновенном объекте Ruby, проÑто Ñделайте Ñледующее: class Person include ActiveModel::Validations validates_presence_of :first_name, :last_name attr_accessor :first_name, :last_name def initialize(first_name, last_name) @first_name, @last_name = first_name, last_name end end
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