在gorm中自动插入散列编码数据

import (
    "github.com/jinzhu/gorm"
    "golang.org/x/crypto/bcrypt"
)

type User struct {
    gorm.Model
    Username string
    Password string
    HashedPassword string `gorm:"-"`
}

func (u *User) BeforeSave() error {
    if u.Password != "" {
        hashedPassword, err := bcrypt.GenerateFromPassword([]byte(u.Password), bcrypt.DefaultCost)
        if err != nil {
            return err
        }
        u.HashedPassword = string(hashedPassword)
    }
    return nil
}

func main() {
    // 初始化gorm数据库连接
    db, err := gorm.Open("mysql", "user:password@/dbname?charset=utf8&parseTime=True&loc=Local")
    if err != nil {
        panic("failed to connect database")
    }
    defer db.Close()

    // 自动创建表
    db.AutoMigrate(&User{})

    // 创建用户
    user := User{
        Username: "testuser",
        Password: "password123",
    }
    db.Create(&user)
}