On the problem that Gorm's beforedelete hook method does not work

The following methods , Hook events will not be triggered .
because gorm Execution time , Will judge the incoming user Object has no data , If not, the hook event will be skipped .

db.Delete(&User{
    }, 1)
//var ids = []uint{1,2,3}
//db.Where("id in ?",ids).Delete(&User{})
//db.Delete(&User{}, "id in ?", ids)

After testing , If you give it casually user Add some data to the object ,BeforeDelete The method will be triggered , Data can also be deleted correctly

var user= User{
    Name: " Zhang San "}
err = global.GVA_DB.Where("id in ?", ids.Ids).Delete(&msg).Error

If you want to trigger a hook event , You can refer to the following method .

// Single delete 
db..Delete(&user{
    ID:1})
// Multiple deletions 
var user []user
var ids = []uint{
    1,2,3}
db.Where("id in ?", ids).Find(&user).Delete(&user)

The most basic , To delete a piece of data , At least id Have value . If you want to do some data processing through hook events , You can refer to the above items to delete , Calling Delete Before the method , Use first or find Methods take out the data first . In this way, you can directly get the value in the hook event to use

func (u *User) BeforeDelete(tx *gorm.DB) (err error) {
    
  fmt.Printf(" Deleting user %v\n",u.Name)
  return
}