mongoose connect to mongodb atlas

}, {collection: "accounts"} ); var User = mongoose.model('accounts', userSchema); User.findOne({name:"WangEr"}, function(err, doc){ if(err) console.log(err); else console.log(doc.name + ", password - " + doc.password); }); var lisi = new User({name:"LiSi", password:"123456"}); lisi.save(function(err, doc){ if(err)console.log(err); else console.log(doc.name + ' saved'); }); }); In the preceding file, run the "node mongo. js" command to view the effect. To use

related purpose Document: A document is a set of key-value pairs. File dynamic mode. Dynamic mode refers to documents in the same collection that do not require a collection of common fields that have the same field or structure group, and can accommodate different types of data. The table given below shows RDBMS terminology using MongoDB relationships　　The most important thing to observe is that the tables and fields in our relational datab

Tags: packaging username font database Image Nodejs Mic Install valueMongoDB Introduction: MongoDB is a JavaScript-based database, the storage format is JSON, and node is a JavaScript-based environment (library), so node and MongoDB collocation can reduce the time and space cost of data conversion. Mongoose Introduction: is a

be executed in an asynchronous environment. At the same time, it is also an object model library for MongoDB operations, which encapsulates some common methods such as MongoDB's addition and deletion of documents, and makes it easier for Nodejs to manipulate MongoDB database.• Installation MongooseNPM Install Mongoose• Reference Mongoosevar

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://localhost/accounts'); vardb =mongoose.connection; Db.on ('Error', Console.error.bind (console,'Connection Error:')); Db.once ('Open', function () {Console.log ('Mongoose opened!'); varUserschema =NewMongoose. Schema ({name:{type:string, unique:true}, Password:string}, {collection:"accounts"} ); varUser = Mongoose.model ('accounts', Userschema); User.findone ({name:"Wanger"}, function (Err, do

}, {collection: "Accounts"} ); var User = Mongoose.model (' accounts ', Userschema); User.findone ({name: "Wanger"}, Function (Err, doc) { if (err) console.log (err); else Console.log (doc.name + ", password-" + Doc.password); }); var lisi = new User ({name: "Lisi", Password: "123456"}); Lisi.save (function (err, doc) { if (err) console.log (err); else Console.log (doc.name + ' saved '); }); The above file, you can view the effect directly by executing the node m

: var mongoose = require(‘mongoose‘); mongoose.connect(‘mongodb://localhost/accounts‘); var db = mongoose.connection; db.on(‘error‘, console.error.bind(console, ‘connection error:‘)); db.once(‘open‘, function() { console.log(‘mongoose opened!‘); var userSchema = new mongoose.Schema({ name:{type: String, uniqu

Document: A document is a set of key-value pairs. File dynamic mode. Dynamic mode refers to documents in the same collection that do not require a collection of common fields that have the same field or structure group, and can accommodate different types of data. The table given below shows RDBMS terminology using MongoDB relationships The most important thing to observe is that the tables and fields in our relational database are replace

data, enter the use gabdb db.user.insert ({dataid : 10001}) Db.user.find () Switch to the From node, you will find that using show DBS will error, because you have not opened the permission, enter Rs.slaveok (), can be successfully accessed. 　　 Switch from node MONGO localhost:10002 //no permission Query show DBS //error 2016-01-06t14:48:53.155+0800 E query [ THREAD1] error:listdatabases failed:{"OK": 0, "errmsg": "Not Master and Slaveok=false", "Code": 13435}: //Open gabriel:seconda

Go to the Bin folder under the folder where MongoDB is installed, execute the command: MONGO, you can use MongoDB.After installing the mongoose, in App.js, first introduce mongoose this module:var mongoose = require (' Mongoose ');Connec