ActiveModel序列化继承

pat*_*ick 13 ruby-on-rails active-model-serializers

说我有这个序列化器

    class FooSerializer < ActiveModel::Serializer
      attributes :this, :that, :the_other

      def this
        SomeThing.expensive(this)
      end

      def that
        SomeThing.expensive(that)
      end

      def the_other
        SomeThing.expensive(the_other)
      end
    end
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单个序列化值的操作有些昂贵...

然后我有另一个序列化器,它可以使用它,但不会返回所有成员:

    class BarSerializer < FooSerializr
      attributes :the_other
    end
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这不起作用...... BarSerializer仍然会有这个,那个和另外的......

如何使用继承但不能自动获取相同的属性?我正在寻找除模块mixins之外的解决方案.

pat*_*ick 9

原来这个答案就是利用魔法include_xxx?方法...

class BarSerializer < FooSerializr
  def include_this?; false; end
  def include_that?; false; end
end
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这将使它只序列化"the_other"