GORMのMySQL接続のサンプル

config.toml

[Database]
driver = "mysql"
server = ""
user = "hoge"
password = "fuga"
database = "testgo"
charset = "utf8"
parseTime = "true"

main.go

package main

import (
	"fmt"
	"github.com/BurntSushi/toml"
	"github.com/jinzhu/gorm"
	_ "github.com/jinzhu/gorm/dialects/mysql"
)

var db *gorm.DB

type Account struct {
	gorm.Model
	id    int
	email string
}

type Config struct {
	Database DbConfig
}

func (c Config) Db() (string, string) {
	return c.Database.Driver, c.Database.DSN()
}

type DbConfig struct {
	Driver    string
	Server    string
	User      string
	Password  string
	Database  string
	Charset   string
	ParseTime string
}

func (d DbConfig) DSN() string {
	return fmt.Sprintf("%s:%s@%s/%s?charset=%s&parseTime=%s", d.User, d.Password, d.Server, d.Database, d.Charset, d.ParseTime)
}

func main() {
	fmt.Println("run main")
}

func init() {
	var err error
	config := getConfig()

	db, err = gorm.Open(config.Db())
	if err != nil {
		panic(err.Error())
	}
	db.AutoMigrate(&Account{})
}

func getConfig() Config {
	var config Config
	_, err := toml.DecodeFile("config.toml", &config)
	if err != nil {
		panic("unloaded config file")
	}

	return config
}