NestJS Mongoose 扩展架构并覆盖父级的 属性
NestJS Mongoose extend Schema and override property of parent
我想要我的 Class B 扩展一个 Class A。这按预期工作，但现在我需要在 Class B.
中覆盖 Class A 的 属性
具体来说，我必须将 Class 中的 属性 设为 Class B 的可选项：
export class B extends A {
// This property is available in Class A
@Prop({ required: false, index: true })
@ApiProperty()
propertyToOverride: number;
}
我在 NestJS 的 Discord 上问过这个问题，这是我从版主 Scott (Scott (EN-DE)#0052):
There is no overriding of prop properties. And, the classic inheritance of schema definitions doesn't work either, i.e. with overriding. If you are extending from a schema class, you can only add additional fields to it in your new class. So, it is a reusability tool and not a polymorphism tool. If you need polymorphism, then you need to look at discriminators.
所以不幸的是，目前似乎没有办法通过继承来做到这一点:(
我想要我的 Class B 扩展一个 Class A。这按预期工作，但现在我需要在 Class B.
中覆盖 Class A 的 属性具体来说，我必须将 Class 中的 属性 设为 Class B 的可选项：
export class B extends A {
// This property is available in Class A
@Prop({ required: false, index: true })
@ApiProperty()
propertyToOverride: number;
}
我在 NestJS 的 Discord 上问过这个问题，这是我从版主 Scott (Scott (EN-DE)#0052):
There is no overriding of prop properties. And, the classic inheritance of schema definitions doesn't work either, i.e. with overriding. If you are extending from a schema class, you can only add additional fields to it in your new class. So, it is a reusability tool and not a polymorphism tool. If you need polymorphism, then you need to look at discriminators.
所以不幸的是，目前似乎没有办法通过继承来做到这一点:(