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brunofrank avatar brunofrank commented on August 13, 2024

Fiz um gato aqui que resolveu meu problema, se alguém se interessar!

module DinheiroActiveModel#:nodoc:

  def self.included(base)#:nodoc:
    base.extend ClassMethods
  end

  module ClassMethods#:nodoc:
    def usar_como_dinheiro(*args)#:nodoc:
      unless args.size.zero?
        args.each do |name|

          name = name.to_s
          module_eval <<-ADICIONANDO_METODO
          validate :#{name}_valido?

          def #{name}_valido?
            begin
              @#{name}.to_s.reais
            rescue Exception => e
              self.errors.add('#{name}', e.message)
            end
          end

          def #{name}=(value)
            if value.nil?
              @#{name} = nil
            elsif value.kind_of?(Dinheiro)
              @#{name} = value.valor_decimal
            else
              begin
                @#{name} = value.reais.valor_decimal
              rescue
                @#{name} = value
              end
            end
          end

          def #{name}
            @#{name}.reais if @#{name}
          end
          ADICIONANDO_METODO
        end
      end
    end
  end
end

from brazilian-rails.

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