m._someId=newmongoose.Types.ObjectId; m.array.push(1); m.ofString.push("strings!"); m.ofNumber.unshift(1,2,3,4); m.ofDates.addToSet(newDate); m.ofBuffer.pop(); m.ofMixed= [1, [], 'three', { four: 5}]; m.nested.stuff= 'good'; m.save(callback); schema常用字段解析 ...
Array Buffer Date Schema.Types.ObjectId Schema.Types.Mixed Schema.Types.Decimal128 SchemeType选项 你可以直接声明schema type为某一种type,或者赋值一个含有type属性的对象 代码语言:javascript 代码运行次数:0 运行 AI代码解释 var schema1 = new Schema({ test: String // `test` is a path of type Stri...
Schema.Types.ObjectId; var StudentSchema = new Schema({}); //默认会有_id:ObjectId var TeacherSchema = new Schema({id:ObjectId});//只有id:ObjectId 该类型的值由系统自己生成,从某种意义上几乎不会重复,生成过程比较复杂,有兴趣的朋友可以查看源码。 1.8 关于Array Array在JavaScript编程语言中并不是...
mongoose.Schema.Types.Stringmongoose.Schema.Types.Numbermongoose.Schema.Types.Datemongoose.Schema.Types.Buffermongoose.Schema.Types.Booleanmongoose.Schema.Types.Mixedmongoose.Schema.Types.ObjectId（或者，等效地， mongoose.ObjectId)mongoose.Schema.Types.Arraymongoose.Schema.Types.Decimal128mongoose.Schema.Types....
String }]});const Group = mongoose.model('Group', groupSchema);const doc = new Group({ title: 'Jedi Order', members: [{ firstName: 'Luke', lastName: 'Skywalker' }]});Array.isArray(doc.members); // truedoc.members.isMongooseArray; // truedoc.members.isMongooseDocumentArray; /...
### 基础概念 `mongoose.Schema.Types.ObjectId` 是 Mongoose 库中用于定义 MongoDB 文档的 _id 字段的数据类型。ObjectId 是一个 12...
type: mongoose.Schema.Types.ObjectId, ref: `User` } ] } ) EXPRESS ROUTE CODE const existingConvo = await Conversation.findOne({ participants: { $elemMatch: [msg.senderId, msg.recId] }, // ^ Query filter must be an object, got an array ...
letmongooseAggregatePaginate=require("mongoose-aggregate-paginate-v2");letBookSchema=newmongoose.Schema({title:String,date:Date,author:{type:mongoose.Schema.ObjectId,ref:"Author",},});BookSchema.plugin(mongooseAggregatePaginate);letBook=mongoose.model("Book",BookSchema);// Like this.Book.aggregatePag...
Types.ObjectId, required: true, ref: 'Person' } }); const Book = mongoose.model('Book', BookSchema); const Q = Book.find().select('title').limit(5); console.dir(Q.jsonSchema(), { depth: null });Output:{ title: 'List of books', type: 'array', items: { type: 'object', ...
type: mongoose.Schema.Types.ObjectId, required: true, ref: ManeuverMainly, }, period: { type: String, enum: ["day", "night"], required: true }, }, ], timestamp: { type: Date, default: Date.now() }, }); 当我做这样一个find()时: ...