- 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.modfile.
go mod init <folder_name>
- Create a
main.gofile, use terminal or bash
notepad main.go
touch main.go
- Let's write some basic code in
main.gofile.
package main
import (
"fmt"
)
func main () {
fmt.Println("Hello From Go")
}
- Run the code by following command
go run main.go
- You will see this output in console
Hello From Go
- Install some packages to connect MongoDB. Here are commands
go get go.mongodb.org/mongo-driver
go get go.mongodb.org/mongo-driver/mongo
- Revisit the
main.gofile to connect MongoDB. Add some code to connect MongoDB. This is how it will look after adding.
package main
// package importing
import (
"fmt"
"log"
"context"
"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")
}
// entry point
func main () {
fmt.Println("Hello From Go")
}
- Run the code by following command
go run main.go
- You will see this output in console
Connected to MongoDB!
Hello From Go
- Till, Our MongoDB is connected. Now let's add some data. We are going to add movie data. So, let's make a movie structure.
// movie model or structure
type Movie struct {
ID string `json:"id"`
Title string `json:"title"`
}
- Now write a function to add movie to database.
// to add movie to db
func addMovie(id, title string) {
movie := Movie{
ID: id,
Title: title,
}
_, err := collection.InsertOne(ctx, movie)
if err != nil {
log.Fatal(err)
}
fmt.Println("Movie added successfully!")
}
- Call the addMovie function to main function.
addMovie("1", "Captain America")
- This is how our code will look like after completing above steps
package main
// package importing
import (
"fmt"
"log"
"context"
"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")
}
// movie model or structure
type Movie struct {
ID string `json:"id"`
Title string `json:"title"`
}
// to add movie to db
func addMovie(id, title string) {
movie := Movie{
ID: id,
Title: title,
}
_, err := collection.InsertOne(ctx, movie)
if err != nil {
log.Fatal(err)
}
fmt.Println("Movie added successfully!")
}
// entry point
func main () {
fmt.Println("Hello From Go")
// callig addMovie
addMovie("1", "Captain America")
}
- Run the code by following command
go run main.go
- You will see this output in console
Connected to MongoDB!
Hello From Go
Movie added successfully!
- We have successfully added some data to MongoDB, you can verify in your database, which is your localhost.
mongodb://localhost:27017/
That's for this article. Thank You.
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