mongoose - NestJS MongoDB 嵌套对象模式

Question

我目前正在运行代码:

export class SystemInformationContent {
  createdAt: number;

  createdBy: User | mongoose.Schema.Types.ObjectId | null;

  updatedAt?: number;

  updatedBy?: User | mongoose.Schema.Types.ObjectId | null;
}

@Schema()
export class SystemInformation {
  @Prop(
    raw({
      createdAt: { type: Number, required: true },
      createdBy: { type: mongoose.Schema.Types.ObjectId, ref: 'User' },
      updatedAt: { type: Number, default: 0 },
      updatedBy: {
        type: mongoose.Schema.Types.ObjectId,
        ref: 'User',
        default: null,
      },
    }),
  )
  system: SystemInformationContent;
}

我没有找到任何“扩展”SystemInformationContent 架构的方法所以使用了raw() @Prop() 中的函数装饰器，但我想知道是否有办法做这样的事情:

export class SystemInformationContent {
  @Prop({ required: true })
  createdAt: number;

  @Prop({ type: mongoose.Schema.Types.ObjectId, ref: 'User' })
  createdBy: User | mongoose.Schema.Types.ObjectId | null;

  @Prop({ default: 0 })
  updatedAt?: number;

  @Prop({ type: mongoose.Schema.Types.ObjectId, ref: 'User', default: null })
  updatedBy?: User | mongoose.Schema.Types.ObjectId | null;
}

@Schema()
export class SystemInformation {
  @Prop(???)
  system: SystemInformationContent;
}

我没有发现任何可以放入 SystemInformation.system 的东西@Prop()考虑到 SystemInformationContent 的模式.

你们知道除了raw还有其他方法吗？或者如果我遗漏了什么？

编辑:我的 NestJS 应用程序的所有类都扩展了 SystemInformation，因此它们看起来都像:

{
  ...,
  system: {
    createdAt: 1616778310610,
    createdBy: "605e14469d860eb1f0641cad",
    editedAt: 0,
    createdBy: null,
  },
}

Answer 1

找到解决方案!

我将 SystemInformationContent 编辑为:

import { Prop, Schema, SchemaFactory } from '@nestjs/mongoose';
import * as mongoose from 'mongoose';
import { User } from '~/schemas/user.schema';

@Schema({ _id: false })
export class SystemInformationContent {
  @Prop({ type: Number, required: true })
  createdAt: number;

  @Prop({ type: mongoose.Schema.Types.ObjectId, ref: 'User' })
  createdBy: User;

  @Prop({ type: Number, default: 0 })
  updatedAt?: number;

  @Prop({
    type: mongoose.Schema.Types.ObjectId,
    ref: 'User',
    default: null,
  })
  updatedBy?: User;
}

export const SystemInformationContentSchema = SchemaFactory.createForClass(
  SystemInformationContent,
);

然后在 SystemInformation 中我编辑为:

import { Prop, Schema } from '@nestjs/mongoose';
import {
  SystemInformationContent,
  SystemInformationContentSchema,
} from '~/schemas/systemInformationContent.schema';

@Schema()
export default class SystemInformation {
  @Prop({ required: true, type: SystemInformationContentSchema })
  system: SystemInformationContent;
}

现在一切正常，我使用 @Schema({ _id: false }) 删除了 SchemaFactory 生成的 ID，所以我最终在数据库中得到了它:

{
  ...,
  "system": {
    "updatedBy": null,
    "updatedAt": 0,
    "createdAt": 1616847116986,
    "createdBy": {
      "$oid": "605f210cc9fe3bcbdf01c95d"
    }
  },
  ...,
}