mongoose mongodb

Mongoose Reference Manualtags (space delimited): MongoDB In general, we do not directly use MongoDB functions to manipulate MongoDB database Mongose is a set of Operations MongoDB database interface.SchemaA database model skeleton, stored as a file, does not have direc

Turn from: What is Https://cnodejs.org/topic/548e54d157fd3ae46b233502Mongoose?In general, we do not directly use MongoDB functions to manipulate MongoDB database Mongose is a set of Operations MongoDB database interface.SchemaA database model skeleton, stored as a file, does not have direct access to the database, which means that it does not have the ability to

1. Intro At the node end, the Express HTTP boot and Mongoose MongoDB connections are asynchronous, so it is encountered that when the Web site is opened, the database is not connected, causing a query error, or encountering the database already connected, but the HTTP service has failed to start. There is a more complicated use scenario: first, link the database, then middleware (such as query fixed configu

Mongoose api:http://mongoosejs.com/docs/api.htmlMongoose Linksvar mongoose = require (' Mongoose ');var db = mongoose.createconnection (' Mongodb://127.0.0.1:27017/nodejs ');Link errorDb.on (' Error ', function (error) {Console.log (Error);});Schema structurevar mongooseschema = new

1. Define ShcemaIn Mongoose everything starts with the schema. Each schema corresponds to a MongoDB collection and defines the model of documents in that collection.var mongoose = require (' Mongoose '); var Schema = Mongoose. Schema; var New Schema ({ title: string, auth

Mongoose: how to solve the problem that unique does not take effect and how to remove the unique restriction, mongooseunique Preface Unique is a member of schema Constraints Verification. Its role is to make the value of a field unique (cannot be repeated) To keep the field unique, use the type value:{type:String,unique:true,dropDups: true} Note:Once mongoose modifies the data storage organization, the data

promise varPromise =query.exec (); Assert.ok (PromiseinstanceofRequire (' mpromise ')); Promise.then (function(DOC) {//Use Doc }); Insert into your Promises libraryUpdate on Mongoose 4.1.0In cases where mpromise satisfies basic usage, advanced users may want to insert their favorite ES6-style promise libraries such as Bluebird, or just use native ES6 promise. Set the Mongoose. Promise gives you a fav

QuestionI have the just started mongodb up with and I recently gone through Mongoose , the an ODM framework.On the documentation, I couldn ' t find why do we need to use Mongoose . One reason I can give is the we can define application schema from Mongoose .I am looking for more possible reasons, and needs that would a

1.1 Noun explanations Schema: A database model skeleton stored as a file, not capable of database operation Model: The Schema model generated by the publication, database operations with abstract properties and behaviors Entity: by Model Creating an entity, his actions also affect the database Attention:1. This learning document uses a strict naming method to differentiate different objects, such as: var PersonSchema; //Person的文本属性 var PersonModel; //Person的数据库模型

noun explanation Schema: A database model skeleton stored as a file, not capable of database operation Model: The Schema model generated by the publication, database operations with abstract properties and behaviors From the Cnode community1. Create a local database and connect:var mongoose = require (' Mongoose ');　　　　　Get Mongoose Module Mongo

This article is mainly to learn Scott's building a site introduction one of the study notes. 1. Build the Environment Using the node's NPM tool for the frames or classes that need to be used at the front and rear of the installation, the framework used to build the movie site is as follows: Back end: (Install with NPM) Mongoose: Tools for quick modeling of MongoDB Mongodb:nosql Database Jade: client's temp

Testmodel ({name: "Lenka", Age:36,email: "[Email protected]"}); Console.log (Testentity.name); Lenkaconsole.log (Testentity.age); 36Note: After a successful creation, the schema property becomes the public property of model and entity.Create a CollectionBased on the previous course, we will begin to learn the specific operation of the data, the following is about some basic data definition, I believe that you are no stranger, please review it again!var mong