Mongoose – Insert Multiple Documents to MongoDB

To insert Multiple Documents to MongoDB using Mongoose, use Model.collection.insert(docs_array, options, callback_function); method. Callback function has error and inserted_documents as arguments.

Syntax of insert() method

Model.collection.insert(docs, options, callback)

where

  • docs is the array of documents to be inserted;
  • options is an optional configuration object – see the docs
  • callback(err, docs) will be called after all documents get saved or an error occurs. On success, docs is the array of persisted documents.

Example – Insert Multiple Documents to MongoDB via Node.js

In this example, we will write a Node.js script that inserts Multiple Documents to MongoDB Collection 'bookstore' using Mongoose module.

node-js-mongoose.js

var mongoose = require('mongoose');

// make a connection 
mongoose.connect('mongodb://localhost:27017/tutorialkart');

// get reference to database
var db = mongoose.connection;

db.on('error', console.error.bind(console, 'connection error:'));

db.once('open', function() {
	console.log("Connection Successful!");
	
	// define Schema
	var BookSchema = mongoose.Schema({
	  name: String,
	  price: Number,
	  quantity: Number
	});

	// compile schema to model
	var Book = mongoose.model('Book', BookSchema, 'bookstore');

	// documents array
	var books = [{ name: 'Mongoose Tutorial', price: 10, quantity: 25 },
					{ name: 'NodeJS tutorial', price: 15, quantity: 5 },
					{ name: 'MongoDB Tutorial', price: 20, quantity: 2 }];

	// save multiple documents to the collection referenced by Book Model
	Book.collection.insert(books, function (err, docs) {
	  if (err){ 
		  return console.error(err);
	  } else {
	    console.log("Multiple documents inserted to Collection");
	  }
	});
	
});

Open a terminal or command prompt and run this script using node command as shown in the following.

Output

$ node node-js-mongoose.js 
Connection Successful!
Multiple documents inserted to Collection

Check MongoDB for the entries in bookstore collection.

> db.bookstore.find()
{ "_id" : ObjectId("5a77033a27e41d271f58fde1"), "name" : "Mongoose Tutorial", "price" : 10, "quantity" : 25 }
{ "_id" : ObjectId("5a77033a27e41d271f58fde2"), "name" : "NodeJS tutorial", "price" : 15, "quantity" : 5 }
{ "_id" : ObjectId("5a77033a27e41d271f58fde3"), "name" : "MongoDB Tutorial", "price" : 20, "quantity" : 2 }

Conclusion

In this Node.js Mongoose Tutorial, we have learnt to insert multiple documents to MongoDB using Mongoose.