connection to mongoDB

Question

I am a new in nodeJS and mongodb. I can not connect my code with mongodb. here is my code. when I run this code it gives me this,

(node:9160) DeprecationWarning: current URL string parser is deprecated, and will be removed in a future version. To use the new parser, pass option { useNewUrlParser: true } to MongoClient.connect.

How can I fix it?

var express = require("express"); var mongoose = require("mongoose"); var passport = require("passport"); var bodyParser = require("body-parser"); var LocalStrategy = require("passport-local"); var passportLocalMongoose = require("passport-local-mongoose"); mongoose.connect("mongodb://localhost/mydb"); // mongoose.connect("mongodb://localhost:27017/mydb_login", { useNewUrlParser: true }) var app = express(); app.set("view engine", "ejs");

Possible duplicate of Connect mongo db to remote server nodejs — Ashish Ratan
– Ashish Ratan, Commented Jul 12, 2018 at 10:16

radhey shyam · Accepted Answer · 2018-07-12 07:56:33Z

2

Try it, I think it will help you.

let MONGOOSE = require('mongoose'); MONGOOSE.connect('mongodb://127.0.0.1:27017/demo', (err, response)=>{ if(err) reject(err); else resolve(null); });

answered Jul 12, 2018 at 7:56

radhey shyam

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2 Comments

Nompumelelo Over a year ago

in which file should I add this snippet?

radhey shyam Over a year ago

You can create a new file or you can add it directly to server.js file. It totally depends on your structure.

Aashish Ailawadi · Accepted Answer · 2018-07-12 08:22:00Z

I would recommend to replace this statement of yours

mongoose.connect("mongodb://localhost/mydb");

with a one of this type:

mongoose.connect(uri) .then( () => { console.log("Connected"); }, err => { console.log(err); } );

This will help you to know wether the connection has been established or not and also if it is not established what is the corresponding error for the same.

Andrei .K · Accepted Answer · 2018-09-18 19:32:08Z

just add {useNewUrlParser: true} to the connection options object

mongoose.connect("mongodb://localhost/mydb", { useNewUrlParser: true });

this is due to a new parser version

Mario Minondo · Accepted Answer · 2018-09-22 17:34:47Z

Put this code inside your layout file, not in app.js:

var mongoose = require('mongoose'); mongoose.connect('mongodb://localhost:27017/yourDatabase', { useNewUrlParser: true }); var Schema = mongoose.Schema;

Then you can create your Schema layout, for example:

var mySchema = new Schema({ first_name: String, last_name: String });

Aneel Khalid · Accepted Answer · 2019-05-17 20:18:23Z

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find The mongoose.connect(db) file in your project.... its could be found in Custom folder or server.js
In mongoose.connect(db) replace mongoose.connect(db,{ useNewUrlParser: true })
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