使用Postgresql生成的代码运行报错

[yb123speed]

func createDatabase() (*gorm.DB, error) {
	dbType := config.GetString("db.type")
	dbAddr := config.GetString("db.addr")
	dbName := config.GetString("db.database")
	dbUser := config.GetString("db.user")
	dbPassword := config.GetString("db.password")
	dbCharset := config.GetString("db.charset")
	conn := ""
	switch dbType {
	case "mysql":
		conn = fmt.Sprintf("%s:%s@(%s)/%s?charset=%s&parseTime=True&loc=Local", dbUser, dbPassword, dbAddr, dbName, dbCharset)
	case "sqlite":
		conn = dbAddr
	case "mssql":
		return nil, errors.New("TODO:suport sqlServer")
	case "postgres":
		hostPort := strings.Split(dbAddr, ":")
		if len(hostPort) == 2 {
			return nil, errors.New("db.addr must be like this host:ip")
		}
		conn = fmt.Sprintf("host=%s port=%s user=%s dbname=%s password=%s sslmode=disable", hostPort[0], hostPort[1], dbUser, dbName, dbPassword)
	default:
		return nil, fmt.Errorf("database type %s is not supported by felix ginrbo", dbType)
	}
	return gorm.Open(dbType, conn)
}

其中的

if len(hostPort) == 2 {
			return nil, errors.New("db.addr must be like this host:ip")
		}

应该是len(hostPort) != 2