How can I get all mongoDB collection names using Node.js code?

Question

I want to store all collection names of MongoDB in a variable/array. How can I write nodeJS code to do that?

You are expected to have some attempt at a solution included in your question, for people to see what your understanding of the problem is and to give them a starting point for a solution. Have a look at How to Ask and check out the tour — Zoey Hewll
– Zoey Hewll, Commented Oct 10, 2017 at 15:55
Possible duplicate of Listing all collections in a mongo database within a nodejs script — user400654
– user400654, Commented Oct 10, 2017 at 22:04

Sohail · Accepted Answer · 2019-11-22 22:19:31Z

4

create a connection by providing connection url.
create a client to db using database name client.db(dbName);
call listCollections method to get detail info of each collection.

finally filter and push the required information and close the connection.

const mongo = require('mongodb').MongoClient;
mongo.connect(connectionUrl, function(err, client) {
let allCollections = [];
//create client by providing database name
const db = client.db(dbName);
db.listCollections().toArray(function(err, collections) {
    if(err) console.log(err);
    //iterate to each collection detail and push just name in array
    collections.forEach(eachCollectionDetails => {
        allCollections.push(eachCollectionDetails.name);
    });
    //close client
    client.close();
 });
});

answered Nov 22, 2019 at 22:19

Sohail

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Comments

lefrost · Accepted Answer · 2021-10-31 20:21:13Z

-1

await db.listCollections().toArray().map(c => c.name);

This returns a string array containing the name of every collection.

answered Oct 31, 2021 at 20:21

lefrost

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