Gorm AfterUpdate/AfterSave missing data?

Your Question

Is it expected that the data in the AfterUpdate/AfterSave hooks only have the changed fields? I'm looking to provide real time updates of data, should I use the hook to perform a find after save to get the full data or just always include the primary key value in the update so I have something to merge on?

I would expect that at least primary keys would be populated.

The document you expected this should be explained

https://gorm.io/docs/hooks.html

Expected answer

What data should or should not be present to the hook function.

Comment From: jinzhu

It can only have the changed field or it requires another query SQL.

Comment From: catsofmath

Newbie question: in AfterUpdate how do get the original record?

Say I have something like

func (newUser *User) AfterUpdate(tx *gorm.DB) (err error) {
  // what should go here to get the original record?
}

I'm calling something without an ID in my update

db.Model(&model.User{}).Where("id = ?", 3).Updates(model.User{Age: 30})