From db00ac46847563f7d32beb1dd4ecbf18531fd15e Mon Sep 17 00:00:00 2001
From: Bailey Pearson The GitHub release contains a detached signature file for the NPM package (named
- The following command returns the link npm package. Using the result of the above command, a To verify the integrity of the downloaded package, run the following command: Think you’ve found a bug? Want to see a new feature in mongodb
HISTORY.md
-Release Integrity
mongodb-X.Y.Z.tgz.sig
).
-npm view mongodb@vX.Y.Z dist.tarball
-
curl
command can return the official npm package for the release.gpg --verify mongodb-X.Y.Z.tgz.sig mongodb-X.Y.Z.tgz
-
Bugs / Feature Requests
node-mongodb-native
? Please open a
case in our issue management tool, JIRA:
@@ -151,11 +142,11 @@
mongodb
If you run into any unexpected compiler failures against our supported TypeScript versions, please let us know by filing an issue on our JIRA.
The recommended way to get started using the Node.js 5.x driver is by using the npm
(Node Package Manager) to install the dependency in your project.
After you've created your own project using npm init
, you can run:
npm install mongodb
# or ...
yarn add mongodb
+npm install mongodb
# or ...
yarn add mongodb
This will download the MongoDB driver and add a dependency entry in your package.json
file.
If you are a Typescript user, you will need the Node.js type definitions to use the driver's definitions:
-npm install -D @types/node
+npm install -D @types/node
Driver Extensions
The MongoDB driver can optionally be enhanced by the following feature packages:
Maintained by MongoDB:
@@ -176,7 +167,7 @@ mongodb
mkdir myProject
cd myProject
Enter the following command and answer the questions to create the initial structure for your new project:
-npm init -y
+npm init -y
Next, install the driver as a dependency.
npm install mongodb
@@ -187,7 +178,7 @@ mongodb
Create a database directory (in this case under /data).
Install and start a mongod
process.
-mongod --dbpath=/data
+mongod --dbpath=/data
You should see the mongod process start up and print some status information.
Connect to MongoDB
Create a new app.js file and add the following code to try out some basic CRUD
@@ -206,7 +197,7 @@
mongodb
specifying the DNS resolution ordering with the --dns-resolution-order
Node.js command line argument (e.g. node --dns-resolution-order=ipv4first
)
-const { MongoClient } = require('mongodb');
// or as an es module:
// import { MongoClient } from 'mongodb'
// Connection URL
const url = 'mongodb://localhost:27017';
const client = new MongoClient(url);
// Database Name
const dbName = 'myProject';
async function main() {
// Use connect method to connect to the server
await client.connect();
console.log('Connected successfully to server');
const db = client.db(dbName);
const collection = db.collection('documents');
// the following code examples can be pasted here...
return 'done.';
}
main()
.then(console.log)
.catch(console.error)
.finally(() => client.close());
+const { MongoClient } = require('mongodb');
// or as an es module:
// import { MongoClient } from 'mongodb'
// Connection URL
const url = 'mongodb://localhost:27017';
const client = new MongoClient(url);
// Database Name
const dbName = 'myProject';
async function main() {
// Use connect method to connect to the server
await client.connect();
console.log('Connected successfully to server');
const db = client.db(dbName);
const collection = db.collection('documents');
// the following code examples can be pasted here...
return 'done.';
}
main()
.then(console.log)
.catch(console.error)
.finally(() => client.close());
Run your app from the command line with:
node app.js
@@ -214,29 +205,29 @@ mongodb
The application should print Connected successfully to server to the console.
Insert a Document
Add to app.js the following function which uses the insertMany
method to add three documents to the documents collection.
-const insertResult = await collection.insertMany([{ a: 1 }, { a: 2 }, { a: 3 }]);
console.log('Inserted documents =>', insertResult);
+const insertResult = await collection.insertMany([{ a: 1 }, { a: 2 }, { a: 3 }]);
console.log('Inserted documents =>', insertResult);
The insertMany command returns an object with information about the insert operations.
Find All Documents
Add a query that returns all the documents.
-const findResult = await collection.find({}).toArray();
console.log('Found documents =>', findResult);
+const findResult = await collection.find({}).toArray();
console.log('Found documents =>', findResult);
This query returns all the documents in the documents collection.
If you add this below the insertMany example, you'll see the documents you've inserted.
Find Documents with a Query Filter
Add a query filter to find only documents which meet the query criteria.
-const filteredDocs = await collection.find({ a: 3 }).toArray();
console.log('Found documents filtered by { a: 3 } =>', filteredDocs);
+const filteredDocs = await collection.find({ a: 3 }).toArray();
console.log('Found documents filtered by { a: 3 } =>', filteredDocs);
Only the documents which match 'a' : 3
should be returned.
Update a document
The following operation updates a document in the documents collection.
-const updateResult = await collection.updateOne({ a: 3 }, { $set: { b: 1 } });
console.log('Updated documents =>', updateResult);
+const updateResult = await collection.updateOne({ a: 3 }, { $set: { b: 1 } });
console.log('Updated documents =>', updateResult);
The method updates the first document where the field a is equal to 3 by adding a new field b to the document set to 1. updateResult
contains information about whether there was a matching document to update or not.
Remove a document
Remove the document where the field a is equal to 3.
-const deleteResult = await collection.deleteMany({ a: 3 });
console.log('Deleted documents =>', deleteResult);
+const deleteResult = await collection.deleteMany({ a: 3 });
console.log('Deleted documents =>', deleteResult);
Index a Collection
Indexes can improve your application's
performance. The following function creates an index on the a field in the
documents collection.
-const indexName = await collection.createIndex({ a: 1 });
console.log('index name =', indexName);
+const indexName = await collection.createIndex({ a: 1 });
console.log('index name =', indexName);
For more detailed information, see the indexing strategies page.
Error Handling
If you need to filter certain errors from our driver, we have a helpful tree of errors described in etc/notes/errors.md.
@@ -244,7 +235,7 @@ mongodb
We guarantee instanceof
checks will pass according to semver guidelines, but errors may be sub-classed or their messages may change at any time, even patch releases, as we see fit to increase the helpfulness of the errors.
Any new errors we add to the driver will directly extend an existing error class and no existing error will be moved to a different parent class outside of a major release.
This means instanceof
will always be able to accurately capture the errors that our driver throws.
-const client = new MongoClient(url);
await client.connect();
const collection = client.db().collection('collection');
try {
await collection.insertOne({ _id: 1 });
await collection.insertOne({ _id: 1 }); // duplicate key error
} catch (error) {
if (error instanceof MongoServerError) {
console.log(`Error worth logging: ${error}`); // special case for some reason
}
throw error; // still want to crash
}
+const client = new MongoClient(url);
await client.connect();
const collection = client.db().collection('collection');
try {
await collection.insertOne({ _id: 1 });
await collection.insertOne({ _id: 1 }); // duplicate key error
} catch (error) {
if (error instanceof MongoServerError) {
console.log(`Error worth logging: ${error}`); // special case for some reason
}
throw error; // still want to crash
}
Nightly releases
If you need to test with a change from the latest main
branch, our mongodb
npm package has nightly versions released under the nightly
tag.
npm install mongodb@nightly
@@ -290,7 +281,6 @@