How do I convert a database row into a struct

Question

Let\'s say I have a struct:

type User struct {
    Name  string
    Id    int
    Score int
}

And a database table with the same schema. Wh

Answer 1

use : go-models-mysql sqlbuilder

val, err = m.ScanRowType(row, (*UserTb)(nil))

or the full code

import (
    "database/sql"
    "fmt"

    lib "github.com/eehsiao/go-models-lib"
    mysql "github.com/eehsiao/go-models-mysql"
)

// MyUserDao : extend from mysql.Dao
type MyUserDao struct {
    *mysql.Dao
}

// UserTb : sql table struct that to store into mysql
type UserTb struct {
    Name       sql.NullString `TbField:"Name"`
    Id         int            `TbField:"Id"`
    Score      int            `TbField:"Score"`
}

// GetFirstUser : this is a data logical function, you can write more logical in there
// sample data logical function to get the first user
func (m *MyUserDao) GetFirstUser() (user *User, err error) {

    m.Select("Name", "Id", "Score").From("user").Limit(1)
    fmt.Println("GetFirstUser", m.BuildSelectSQL().BuildedSQL())
    var (
        val interface{}
        row *sql.Row
    )

    if row, err = m.GetRow(); err == nil {
        if val, err = m.ScanRowType(row, (*UserTb)(nil)); err == nil {
            u, _ := val.(*UserTb)

            user = &User{
                Name:       lib.Iif(u.Name.Valid, u.Nae.String, "").(string),
                Id:         u.Id,
                Score:      u.Score,
            }
        }
    }
    row, val = nil, nil

    return
}