Display MongoDB records by ObjectId?

Let us first create a collection with documents −

> db.findByObjectIdDemo.insertOne({"ClientName":"Larry","ClientAge":23}); {    "acknowledged" : true,    "insertedId" : ObjectId("5cd68cd657806ebf1256f11a") } > db.findByObjectIdDemo.insertOne({"ClientName":"Chris","ClientAge":26}); {    "acknowledged" : true,    "insertedId" : ObjectId("5cd68cdc57806ebf1256f11b") } > db.findByObjectIdDemo.insertOne({"ClientName":"David","ClientAge":38,"isMarried":true}); {    "acknowledged" : true,    "insertedId" : ObjectId("5cd68cf657806ebf1256f11c") }

Following is the query to display all documents from a collection with the help of find() method −

> db.findByObjectIdDemo.find().pretty();

This will produce the following output −

{    "_id" : ObjectId("5cd68cd657806ebf1256f11a"),    "ClientName" : "Larry",    "ClientAge" : 23 } {    "_id" : ObjectId("5cd68cdc57806ebf1256f11b"),    "ClientName" : "Chris",    "ClientAge" : 26 } {    "_id" : ObjectId("5cd68cf657806ebf1256f11c"),    "ClientName" : "David",    "ClientAge" : 38,    "isMarried" : true }

Following is the query to find by ObjectId −

> db.findByObjectIdDemo.find({_id: new ObjectId("5cd68cf657806ebf1256f11c")}).toArray(function(err, myDocument) { console.log(myDocument); });

This will produce the following output −

[    {       "_id" : ObjectId("5cd68cf657806ebf1256f11c"),       "ClientName" : "David",       "ClientAge" : 38,       "isMarried" : true    } ]