Gorm更新并在单个操作中获取更新的行？

type User struct {
    ID   uint
    Name string
    Age  int
}

func main() {
    db, err := gorm.Open("mysql", "user:password@tcp(localhost:3306)/database")
    if err != nil {
        panic(err)
    }
    defer db.Close()

    // 更新并获取更新的行
    var user User
    result := db.Model(&user).Where("id = ?", 1).Update("name", "John")
    if result.Error != nil {
        panic(result.Error)
    }

    // 获取受影响的行数
    rowsAffected := result.RowsAffected
    fmt.Println("Rows affected:", rowsAffected)
}