To use the new parser, pass option { useNewUrlParser: true } to MongoClient.connect [duplicate]

Question

When I run a simple NodeJS project to upload data to a database using MongoDB, I get the following errors:

(node:3556) 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.

Why? and how can I fix this?

Answer 1

If you're using mongo to connect try using:

MongoClient.connect('mongodb://user:[email protected]:port/dbname', { useNewUrlParser: true });

If you're using mongoose, use something like this:

mongoose.connect('mongodb://user:[email protected]:27017/dbname', { useNewUrlParser: true });

You could also use something like this:

const config = {
  autoIndex: false,
  useNewUrlParser: true,
};
return mongoose.connect(uri, config);

As explained by lineus:

https://github.com/Automattic/mongoose/issues/6667

Answer 2

Put this code inside your layout file

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
});