首先,我们要定义一个基本的名为Article的Mongoose Schema。 这里我们将Comments定义为一个Array Schema类型。 不必要关注于所有的代码,只需要关注在Comments,这是本文讨论的重点。 varmongoose =require('mongoose'),Schema= mongoose.Schema,/** * Article Schema */varArticleSchema=newSchema({title: {type:String,...
SchemaArray.set() Parameters: option«String»The option you'd like to set the value for value«Any»value for option Returns: «undefined,void» Sets a default option for all Array instances. Example: // Make all Array instances have `required` of true by default.mongoose.Schema....
创建Schema Array 在创建 MongoDB 文档时,可以在 Schema 中定义一个数组字段,用来存储多个值。例如,我们创建一个名为users的集合来存储用户信息,其中的hobbies字段是一个数组,用来存储用户的兴趣爱好: constmongoose=require('mongoose');constuserSchema=newmongoose.Schema({name:String,age:Number,hobbies:[String]}...
schema«Schema»fields to add to the schema for instances of this sub-class [options]«Object|string»If string, same asoptions.value. [options.value]«String»the string stored in thediscriminatorKeyproperty. If not specified, Mongoose uses thenameparameter. ...
var contentSchema = new mongoose.Schema({ name: String, quantity: String, complete: Boolean }); exports.User = mongoose.model('User', userSchema); the friends parameter is defined as an array of Object IDs. So in other words, a user will have an array containing the IDs of other users...
请尝试安装Mongoose 5.13.8版本。我在6.0.1中遇到了同样的问题
请尝试安装Mongoose 5.13.8版本。我在6.0.1中遇到了同样的问题
After defining my schema similar to the following one: const UserSchema = new mongoose.Schema({ roles: { type: [String], index: true, }, }); mongoose.model('User', UserSchema) If I try to instantiate a new User like this: const user = new User({ roles: ['super-admin'] }); ...
1.2 准备工作 1.首先你必须安装MongoDB和NodeJS 2.在项目只能够创建一个数据库连接,如下: var mongoose = require('mongoose'); //引用...1.8 关于Array Array在JavaScript编程语言中并不是数组,而是集合,因此里面可以存入不同...
添加[mongoose schema][1] 将你的promise链改为async/await对,就像mongoose的文档那样,这样更容易捕获错误 将mongoose连接函数移到listen函数中 不要从'/'重定向,它将无休止地重定向到它自己 创建迁移端点以迁移默认项 使用路由'/items'创建一个新项目(POST '/items')并检索所有项目(GET '/items'),如[RESTful...