Insert Data Into MongoDB

Introduction

In this Tutorial we will connect to MongoDB, and then insert a document in MongoDB

initialize go module, by issuing the below command

go mod init github.com/freedomtutorials/mongodbinsert

import go drivers into application, by issuing the below command

go get go.mongodb.org/mongo-driver

Define a type which is identical to golang document

type Device struct 
{
	ID int
	Name string
}

Connect to MongoDB

Below is the Go lang Code, which connects to MongoDB database.

    // set the mongodb uri 
    clientOptions := options.Client().ApplyURI("mongodb://127.0.0.1:27017")
	
    //connect to mongodb
    client, err := mongo.Connect(context.TODO(), clientOptions)

    if err != nil {
        log.Fatal(err)
    }

    err = client.Ping(context.TODO(), nil)

    if err != nil {
        log.Fatal(err)
    }

Get handle to database through client connection.

freedomtutorialsDB := client.Database("freedomtutorials")

Get handle to collection through database handle.

mydataCollection := freedomtutorialsDB.Collection("mydata")

create instance of type and fill data

	var device Device
	device.ID = 1
	device.Name = "Name"

Now Insert data with mydataCollection instance and pass the data object as parameter.

collInsertResult, err := mydataCollection.InsertOne(context.TODO(), device)

check for errors in InsertOne Operation

if err != nil {
    log.Fatal(err)
}

print InsertedID

fmt.Println("Inserted Single Document: ", collInsertResult.InsertedID)