使用GORM和echo-framework进行更新的惯用方法

import (
    "github.com/labstack/echo"
    "github.com/jinzhu/gorm"
    _ "github.com/jinzhu/gorm/dialects/mysql" // 根据数据库类型导入相应的驱动
)

db, err := gorm.Open("mysql", "user:password@tcp(host:port)/database?charset=utf8&parseTime=True&loc=Local")
if err != nil {
    // 处理连接错误
}
defer db.Close()

type User struct {
    gorm.Model
    Name  string
    Email string
}

e := echo.New()

e.PUT("/users/:id", updateUser)

func updateUser(c echo.Context) error {
    id := c.Param("id")
    name := c.FormValue("name")
    email := c.FormValue("email")

    var user User
    if err := db.First(&user, id).Error; err != nil {
        // 处理查询错误
    }

    user.Name = name
    user.Email = email

    if err := db.Save(&user).Error; err != nil {
        // 处理更新错误
    }

    return c.JSON(http.StatusOK, user)
}