Your browser does not seem to support JavaScript. As a result, your viewing experience will be diminished, and you have been placed in read-only mode.
Please download a browser that supports JavaScript, or enable it if it's disabled (i.e. NoScript).
如果你的产品的属性都是固定的或者种类并不是很多,建议你还是直接通过继承给product.product添加字段。