Node.js MongoDB Insert Record
When working with Node.js and MongoDB, one of the most common tasks is inserting data into a collection. MongoDB provides simple methods like insertOne() and insertMany() to make this process quick and efficient. Let’s explore how to use these methods with practical examples.
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Insert a Single Record
The insertOne() method is used to insert a single record into a MongoDB collection. The method takes an object as its first argument, where each key-value pair represents a field and its value in the document.
Example: Inserting a single record in the “employees” collection
Create a JavaScript file named insert.js, and add the following code:
var MongoClient = require('mongodb').MongoClient;
var url = "mongodb://localhost:27017/MongoDatabase";
MongoClient.connect(url, function(err, db) {
if (err) throw err;
var myobj = { name: "Ajeet Kumar", age: "28", address: "Delhi" };
db.collection("employees").insertOne(myobj, function(err, res) {
if (err) throw err;
console.log("1 record inserted");
db.close();
});
});
Now, open your terminal and run the following command:
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node insert.js
You’ll see the message “1 record inserted” in the console, which confirms that your record has been successfully added to the MongoDB collection.
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Insert Multiple Records
To insert multiple records at once, MongoDB provides the insert() method (or the newer insertMany() method). This method accepts an array of objects, where each object represents a record you want to insert.
Example: Inserting multiple records in the “employees” collection
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Create a JavaScript file named insertall.js, and add the following code:
var MongoClient = require('mongodb').MongoClient;
var url = "mongodb://localhost:27017/MongoDatabase";
MongoClient.connect(url, function(err, db) {
if (err) throw err;
var myobj = [
{ name: "Mahesh Sharma", age: "25", address: "Ghaziabad"},
{ name: "Tom Moody", age: "31", address: "CA"},
{ name: "Zahira Wasim", age: "19", address: "Islamabad"},
{ name: "Juck Ross", age: "45", address: "London"}
];
db.collection("employees").insert(myobj, function(err, res) {
if (err) throw err;
console.log("Number of records inserted: " + res.insertedCount);
db.close();
});
});
Run the script using the following command:
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node insertall.js
After running this command, you’ll see an output indicating that multiple records have been successfully inserted into the collection.
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