Connecting MongoDB in Go - 03

• First check the Go version by running the command

go version

• Create a folder

mkdir <folder_name>

• Switch to created folder

cd <folder_name>

• Initialize the go project by running the given command. You will get go.mod file.

go mod init <folder_name>

• Create a main.go file, use terminal or bash

notepad main.go 
touch main.go

• Let's write some basic code in main.go file.

package main 

import (
    "fmt"
)


func main() {
    fmt.Println("MongoDb with Go")
}

• Run the code by following command

go run main.go 

• You will see this output in console

MongoDb with Go

• Install some packages to connect MongoDB in Go. Here are commands

go get go.mongodb.org/mongo-driver
go get go.mongodb.org/mongo-driver/mongo

• Revisit the main.go file to connect MongoDB. This is our full code

package main

import (
    "context"
    "fmt"
    "log"

    "go.mongodb.org/mongo-driver/mongo"
    "go.mongodb.org/mongo-driver/mongo/options"
)

// mongodb connections
var collection *mongo.Collection
var ctx = context.TODO()

func init() {
    clientOptions := options.Client().ApplyURI("mongodb://localhost:27017/")
    client, err := mongo.Connect(ctx, clientOptions)
    if err != nil {
        log.Fatal(err)
    }

    // check connection
    err = client.Ping(ctx, nil)
    if err != nil {
        log.Fatal(err)
    }
    fmt.Println("Connected to MongoDB!")

    collection = client.Database("testingWithGo").Collection("movies")
}

func main() {
    fmt.Println("MongoDb with Go")
}

• Run the code by following command again

go run main.go 

• You will see this output in console

Connected to MongoDB!
MongoDb with Go

That's for today. Thank You .