MongoDB Stitch retrieves all data fields

Can anyone help me with my MongoDB query issue?

I've recently started working with mongoDB and I'm having trouble getting just one field back for all my documents.

var docs = db.collection("articles").find({}, { _id: 0, title:1}).asArray();

Despite specifying that I only want the "title" field in the projection, the query is returning all fields. There are no errors but I can't figure out what's wrong. Maybe someone else can spot the mistake I'm missing?

Any assistance would be greatly appreciated!

For reference, I'm using the Stitch API from mongoDB Atlas.

javascriptangularjsmongodbmongodb-stitch

Answer №1

It appears that you are utilizing the MongoDB Stitch Browser SDK, specifically version 4.

In this scenario, the collection represents an instance of RemoteMongoCollection. When using find(), you can provide options in the format of RemoteFindOptions. One way to specify which fields should be included in the matching documents is by defining a projection object with relevant keys.

For demonstration: 

const client = stitch.Stitch.initializeDefaultAppClient('app-id');
const db = client.getServiceClient(stitch.RemoteMongoClient.factory, 'mongodb-atlas').db('databaseName');

client.auth.loginWithCredential(new stitch.AnonymousCredential())
       .then(() => {
          db.collection('collectionName')
            .find({}, 
                  {"projection":{"_id":0, "title": 1}}
             )
            .asArray().then(docs => {
              // display results 
              console.log(docs);
          });
        }).catch(err => {
          // Manage errors here
          console.log("Error", err);
 });

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