Go Web API

This a template of GoLang Web API, using the Gin framework and Go ORM with PostgreSQL Database.

By Hidayat Arghandabi 2023

Implementations

Last Update 06/19/2023

• HTTP Request
• Authorization and Authentication
• Middleware (Auth, Logger)
• PostgreSQL DB
• Containerization
• .env
• Migration

How to run using docker container

Run the docker-compose up command

How to run/use this template without docker containers

1. Update DB Connection String in the .env file
2. Create migration located in migrate/migrate.go using go run migrate/migrate.go. It will create the posts and users table in the database.
3. Install packages go mod tidy
4. You can run the project from main.go using the vscode debugger or CompileDaemon -command="./go-crud" the Daemon tool, make sure it is installed.
5. Enjoy this project

Initalization

go mod init creating a go mod file (like a node file for nodejs projects)

Required Packages

1. go get github.com/githubnemo/CompileDaemon and install it, so that it can be run as command-line tool go install github.com/githubnemo/CompileDaemon watch files for changes and rebuild
2. go get github.com/joho/godotenv Easy to load environment variables
3. go get -u github.com/gin-gonic/gin Gin Framework for Http Server
4. go get -u gorm.io/gorm and go get -u gorm.io/driver/postgres Go ORM Library for Go
5. go get -u github.com/sirupsen/logrus Package for logging in a Gin application
6. go get github.com/redis/go-redis/v9 Package for Redis go

for JWT authentication

5. go get -u golang.org/x/crypto/bcrypt for cryptography visit https://pkg.go.dev/golang.org/x/crypto
6. go get -u github.com/golang-jwt/jwt/v4 jwt package visit https://pkg.go.dev/github.com/golang-jwt/jwt or https://github.com/golang-jwt/jwt

Running Development Server

CompileDaemon -command="./go-crud" Run the Daemon and given the package name

Declaring Models

https://gorm.io/docs/models.html visit the link to see how to declare your models. we are using the following model

type User struct {
  gorm.Model
  Name string
}
// equals
type User struct {
  ID        uint           `gorm:"primaryKey"`
  CreatedAt time.Time
  UpdatedAt time.Time
  DeletedAt gorm.DeletedAt `gorm:"index"`
  Name string

to make auto db.AutoMigrate(&Product{}) visit link https://gorm.io/docs/index.html

as migrate/migrate.go is created run the migration using go run migrate/migrate.go, It will make the posts table in the database.

Go ORM Create

visit the link https://gorm.io/docs/create.html for Go ORM

Important Commands

• docker-compose up --build