Class ActiveModel::Validations::ConfirmationValidator < EachValidator

    # File activemodel/lib/active_model/validations/confirmation.rb, line 11
11:       def setup(klass)
12:         klass.send(:attr_accessor, *attributes.map do |attribute|
13:           :"#{attribute}_confirmation" unless klass.method_defined?(:"#{attribute}_confirmation")
14:         end.compact)
15:       end

   # File activemodel/lib/active_model/validations/confirmation.rb, line 5
5:       def validate_each(record, attribute, value)
6:         if (confirmed = record.send("#{attribute}_confirmation")) && (value != confirmed)
7:           record.errors.add(attribute, :confirmation, options)
8:         end
9:       end