[Question]

[al-ship]

Document Link

[

](https://gorm.io/docs/update.html)

Your Question

db.Model(&user).Updates(map[string]interface{}{"name": "hello", "age": 18, "active": false})
// UPDATE users SET name='hello', age=18, active=false, updated_at='2013-11-17 21:34:10' WHERE id=111;
it updates all fields and dependent objects in user!

Expected answer

I expect to update only fields specified in map.

[mimani68]

Could specify your exact problem! While i simulate your scenario, no weird stuff has happened.

package main

import (
	"fmt"

	"gorm.io/driver/mysql"
	"gorm.io/gorm"
)

type User struct {
	ID     uint   `gorm:"primarykey"`
	Name   string `gorm:"not null"`
	Family string `gorm:"not null"`
	Age    int    `gorm:"not null"`
}

func main() {
	dsn := "root:123@tcp(127.0.0.1:3306)/app?charset=utf8mb4&parseTime=True&loc=Local"
	db, err := gorm.Open(mysql.Open(dsn), &gorm.Config{})
	if err != nil {
		panic(err)
	}
	// Migrate the schema
	db.AutoMigrate(&User{})

	// Create a user
	user := User{Name: "John", Family: "Doe", Age: 30}
	db.Create(&user)

	// Update some attribute of record
	db.Model(&user).Updates(&User{Name: "Mahdi"})

	// Print the updated user
	var updatedUser User
	db.Where("name = ?", "Mahdi").First(&updatedUser)
	fmt.Println(updatedUser)
}

Developers can see the below result while trying to run the application in the meantime.

go run app.go

And the output was

{8 Mahdi Doe 30}