mongoose db

: 27018/mydatabase'; // if you need to define the user name and password: var dbURI = 'mongodb: // username: password @ localhost/mydatabase'; // You can also pass an object type parameter as follows: var dbURI = 'mongodb: // localhost/mydatabase'; var dbOptions = {'user': 'db _ username', 'pass': 'db _ password'}; mongoose. connect (dbURI, dbOptions ); Based on

. objectId, ref: 'clazz '}) StudentSchema. statics = {findClazzNameByStudentId: function (studentId, callback) {return this. findOne ({_ id: studentid00000000.populate('clazzid'0000.exe c (callback)} // other methods are omitted ..} module. exports = StudentSchema As you can see, the master needs to set the ClazzID to ref to Clazz, and the dependency is the name of the Model you created. to query Clzz, use populate Below is the Model var mongoose = re

Mongoose getting started with mongooseNo matter what database you use as the db service, connect is an essential step. Method 1: @ Param {String} uri @ param {Object} options @ param {Function} callbackconnect (uri, [options], [callbakc]) returns the mongoose Object. connect ('mongodb: // localhost/test', {mongos: true}, function (err, result) {if (err) {console.

(err) { Console.log (' findOne err: ', err); return ; } if (DOC) { doc.remove (); }})Conditional statementsvar mongoose = require (' Mongoose '); require ('./model.js '); var Book = Mongoose.model (' book '); var cond = { $or: [ ' Jim '}, ' James '} function (Err, Docs) { if(err) { console.log (' Find by cond err: ', err); } Console.log (' cond: ', cond, '

number is 27017. (You can understand it. It is not recommended. It is difficult to modify the default port number for later maintenance) Insert data // Introduce the module var mongoose = require ('mongoose'); // connect to the database var db = mongoose. createConnection ('mongodb: // 127.0.0.1: 27017/test'); // set

MongoDB operation, which encapsulates some commonly used methods such as MongoDB's addition and deletion to document, so that Nodejs operation MongoDB database becomes more flexible and simple. 2. What can mongoose do? Mongoose, because it encapsulates the usual processing method for MongoDB to document operation, let Nodejs operation MongoDB database become easy, easier, so easy! Learn the above introduct

document, so that Nodejs operation MongoDB database becomes more flexible and simple.2. What can mongoose do?Mongoose, because it encapsulates the usual processing method for MongoDB to document operation, let Nodejs operation MongoDB database become easy, easier, so easy!Learn the above introduction, I believe you have a preliminary understanding and understanding of the

= {findclazznamebystudentid: function (studentid, callback) {return this. findone ({_ ID: studentid00000000.populate('clazzid'0000.exe C (callback)} // other methods are omitted ..} module. exports = studentschema As you can see, the master needs to set the clazzid to ref to clazz, and the dependency is the name of the model you created. to query clzz, use populate Below is the model var mongoose = require(‘mongo