What is the process of inserting binary data into mongoDB along with an objectId?

Question

What is the process of inserting binary data into mongoDB along with an objectId?

I'm trying to add a document to a collection that requires an ObjectId and a BinData value, but I'm not sure how to do it.

When I attempt to execute this code, I receive the following error:

TypeError: Cannot read property 'ObjectId' of undefined

.

server/fixtures.js

var ObjectId = Mongo.ObjectID;
var chunk = {
            "_id"     : ObjectId("57a9be3c89c1e4b50c574e3a"),
            "files_id": ObjectId("5113b0062be53b231f9dbc11"),
            "n"       : 0,
            "data"    : BinData(0, "/9j/4AAQSkZJRgA...and...so...on../2Q==")
        };

db.mediafiles.chunks.insert(chunk);

Update

I am using Meteor

Therefore, I can use

var ObjectId = Meteor.Collection.ObjectID;

. But I am unsure on how to access the BinData.

ReferenceError: BinData is not defined

javascript mongodb meteor insert objectid

Answer 1

Answer №1

Discovered this solution today too.

In addition to the previous response, utilizing ObjectID and Binary from the MongoDB driver can help resolve issues with binary data mismatches after insertion. The root cause lies in how the Binary function operates, requiring either a raw string or buffer input. To work around this, you can initialize a buffer from base64 encoded content like so:

const { Binary, ObjectID } = require('mongodb')

async function execute() {
  // Establish connection with MongoDB 
  const client = new MongoClient()

  // Connect to the database
  await client.connect(...)

  try {
    // Insert base64 encoded content using ObjectID and Binary
    await client.db().mediafiles.chunks.insert({
      _id: ObjectID('57a9be3c89c1e4b50c574e3a'),
      files_id: ObjectID('5113b0062be53b231f9dbc11'),
      n: 0,
      data: Binary(Buffer.from('/9j/4AAQSkZJRgA...and...so...on../2Q==', 'base64')),
    })
  } finally {
    // Close the client connection
    await client.close()
  }
}

Answer 2

Discovered this solution today too.

In addition to the previous response, utilizing ObjectID and Binary from the MongoDB driver can help resolve issues with binary data mismatches after insertion. The root cause lies in how the Binary function operates, requiring either a raw string or buffer input. To work around this, you can initialize a buffer from base64 encoded content like so:

const { Binary, ObjectID } = require('mongodb')

async function execute() {
  // Establish connection with MongoDB 
  const client = new MongoClient()

  // Connect to the database
  await client.connect(...)

  try {
    // Insert base64 encoded content using ObjectID and Binary
    await client.db().mediafiles.chunks.insert({
      _id: ObjectID('57a9be3c89c1e4b50c574e3a'),
      files_id: ObjectID('5113b0062be53b231f9dbc11'),
      n: 0,
      data: Binary(Buffer.from('/9j/4AAQSkZJRgA...and...so...on../2Q==', 'base64')),
    })
  } finally {
    // Close the client connection
    await client.close()
  }
}

Answer 3

Answer №2

Below is the sample NodeJS script for inserting data into a collection. Specifically for your question, here is the required statement when working with NodeJS.

var ObjectId = require('mongodb').ObjectID;

Complete NodeJS code (assuming you are using NodeJS):-

var Db = require('mongodb').Db, MongoClient = require('mongodb').MongoClient;
var assert = require('assert');
var ObjectId = require('mongodb').ObjectID;

var bindata = new require('mongodb').Binary("ZzEudm1s");

var insertDocument = function(db, callback) {
    var chunk = {
        "_id" : new ObjectId("535e1b88e421ad3a443742e7"),
        "files_id" : new ObjectId("5113b0062be53b231f9dbc11"),
        "n" : 0,
        "data" : bindata
    };

    db.collection('Day1').insertOne(chunk, function(err, result) {
        assert.equal(err, null);
        console.log("Inserted a document into the collection.");
        callback();
    });
};

MongoClient.connect('mongodb://localhost:27017/test', function(err, db) {
    assert.equal(null, err);
    insertDocument(db, function() {
        db.close();
    });
});

If you require a pure JavaScript object of ObjectId, this library can be used.

https://www.npmjs.com/package/objectid-purejs

Answer 4

Below is the sample NodeJS script for inserting data into a collection. Specifically for your question, here is the required statement when working with NodeJS.

var ObjectId = require('mongodb').ObjectID;

Complete NodeJS code (assuming you are using NodeJS):-

var Db = require('mongodb').Db, MongoClient = require('mongodb').MongoClient;
var assert = require('assert');
var ObjectId = require('mongodb').ObjectID;

var bindata = new require('mongodb').Binary("ZzEudm1s");

var insertDocument = function(db, callback) {
    var chunk = {
        "_id" : new ObjectId("535e1b88e421ad3a443742e7"),
        "files_id" : new ObjectId("5113b0062be53b231f9dbc11"),
        "n" : 0,
        "data" : bindata
    };

    db.collection('Day1').insertOne(chunk, function(err, result) {
        assert.equal(err, null);
        console.log("Inserted a document into the collection.");
        callback();
    });
};

MongoClient.connect('mongodb://localhost:27017/test', function(err, db) {
    assert.equal(null, err);
    insertDocument(db, function() {
        db.close();
    });
});

If you require a pure JavaScript object of ObjectId, this library can be used.

https://www.npmjs.com/package/objectid-purejs

What is the process of inserting binary data into mongoDB along with an objectId?

Answer №1

Answer №2

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