如何在 Mongoose Schema 中的嵌套对象中需要元素答案

【问题标题】：How require elements in nested object in Mongoose Schema如何在 Mongoose Schema 中的嵌套对象中需要元素
【发布时间】：2019-10-22 21:00:50
【问题描述】：

创建架构我需要一些嵌套对象始终在数据帖子中以保存在我的数据库中。

我尝试以这种方式创建 2 个模式，并且需要对象 valid，但我还需要 valid.from 和 valid.to，但这种方式不起作用。

import * as mongoose from 'mongoose';

const LicenseTime = new mongoose.Schema({
  from: { type: Date, required: true },
  to: { type: Date, required: true },
});

export const LicenseSchema = new mongoose.Schema({
  customer: { type: String, required: true },
  appId: { type: String, required: true },
  purchaseDate: { type: Date, required: true },
  valid: { type: LicenseTime, required: true }
});

【问题讨论】：

标签： javascript node.js mongoose schema nestjs

【解决方案1】：

但是我能够尝试，您的示例有效。我使用了以下模式：

import { Schema } from 'mongoose';

const LicenseTime = new Schema({
  from: {
    type: Date,
    required: true,
  },
  to: {
    type: Date,
    required: true,
  },
},
{
  _id: false, // Used so mongoose/mongo doesn't create id
  id: false, // Used so mongoose/mongo doesn't create id
});

export const LicenseSchema = new Schema({
  customer: {
    type: String,
    required: true,
  },
  appId: {
    type: String,
    required: true,
  },
  purchaseDate: {
    type: Date,
    required: true,
  },
  valid: {
    type: LicenseTime,
    required: true,
  },
});

当我尝试保存其他内容时使用此架构：

{
  customer: 'example customer',
  appId: 'example appId',
  purchaseDate: new Date(),
  valid: {
    to: new Date(),
    from: new Date(),
  },
}

保存失败。

示例：如果我尝试保存：

{
  customer: 'example customer',
  appId: 'example appId',
  purchaseDate: new Date(),
  valid: {
    to: new Date(),
  },
}

代码失败：

[Nest] 8895 - 2019 年 6 月 12 日下午 1:42 [ExceptionsHandler] Cat 验证失败：有效。来自：需要路径 from。有效：验证失败：来自：需要路径 from . +829 毫秒 [0] ValidationError：Cat 验证失败：valid.from：路径from 是必需的。有效：验证失败：来自：路径from 是必需的。 [0] 在新的 ValidationError (/home/adrian/work/try/node_modules/mongoose/lib/error/validation.js:30:11) [0] 在 model.Document.invalidate (/home/adrian/work/try/node_modules/mongoose/lib/document.js:2260:32) [0] 在 SingleNested.Subdocument.invalidate (/home/adrian/work/try/node_modules/mongoose/lib/types/subdocument.js:147:18) [0] 在 p.doValidate.skipSchemaValidators (/home/adrian/work/try/node_modules/mongoose/lib/document.js:2109:17) [0] 在 /home/adrian/work/try/node_modules/mongoose/lib/schematype.js:981:9 [0] 在 processTicksAndRejections (internal/process/task_queues.js:82:9)

最后，我使用了以下依赖项：

{
  "dependencies": {
    "@nestjs/common": "^6.0.0",
    "@nestjs/core": "^6.0.0",
    "@nestjs/mongoose": "^6.1.2",
    "@nestjs/platform-express": "^6.0.0",
    "mongoose": "^5.5.14",
    "reflect-metadata": "^0.1.12",
    "rimraf": "^2.6.2",
    "rxjs": "^6.3.3"
  },
  "devDependencies": {
    "@nestjs/testing": "^6.0.0",
    "@types/express": "^4.16.0",
    "@types/jest": "^23.3.13",
    "@types/mongoose": "^5.5.6",
    "@types/node": "^10.12.18",
    "@types/supertest": "^2.0.7",
    "concurrently": "^4.1.0",
    "jest": "^23.6.0",
    "nodemon": "^1.18.9",
    "prettier": "^1.15.3",
    "supertest": "^3.4.1",
    "ts-jest": "24.0.2",
    "ts-node": "8.1.0",
    "tsconfig-paths": "3.8.0",
    "tslint": "5.16.0",
    "typescript": "3.4.3",
    "wait-on": "^3.2.0"
  },
}

【讨论】：

【解决方案2】：

你需要这样写你的LicenseSchema：

export const LicenseSchema = new mongoose.Schema({
  customer: { type: String, required: true },
  appId: { type: String, required: true },
  purchaseDate: { type: Date, required: true },
  valid: {
    type: mongoose.Schema.Types.ObjectId,
    ref: "LicenseTime", 
    required: true
  }
});

顺便说一句，这可能与Reference in mongoose schema 重复

如果有帮助请告诉我

【讨论】：

我猜这将创建 LicenseTime 并将其保存在另一个集合中