Node.js Mongodb integration Update a document
Example
Find a document with the property { greetings: 'Hellu' } and change it to { greetings: 'Whut?' }
const MongoClient = require('mongodb').MongoClient;
const url = 'mongodb://localhost:27017/test';
MongoClient.connect(url, function (err, db) {
if (err) throw new Error(err);
db.collection('myCollection').updateOne({ // Update method 'updateOne'
greetings: "Hellu" },
{ $set: { greetings: "Whut?" }},
function (err, result) {
if (err) throw new Error(err);
db.close(); // Don't forget to close the connection when you are done
});
});
Collection method updateOne()
db.collection(collection).updateOne(filter, update, options. callback)
| Parameter | Type | Description |
|---|---|---|
filter | object | Specifies the selection critera |
update | object | Specifies the modifications to apply |
options | object | (optional) Optional settings (default: null) |
callback | Function | Function to be called when the operation is done |
The callback function takes two arguments
err: Error - If an error occurs the err argument will be defineddb: object - The MongoDB instance
