How to implement group validator?

[nogolang]

How to implement group validator?

I have the following structure

type User struct {
	UserId        int64          `binding:"required,number"`
	Name         string         `json:"name" form:"name" binding:"gte=3"`
}

Now I need to implement findUserById , I have to verify the ID exist, so i use required.
But when I implement saveUser, I have to verify that the ID doesn't exist because my database is a self-increment ID.
They have a conflict

In Java spring boot, they can be distinguished by a custom group

[deankarn]

The honest answer would be to break your Find + Save User struct up into two separate ones. I highly recommend doing this regardless otherwise you'll eventually end up with abstraction leakage between the two use case resulting in less maintainable and more brittle code.

I can't see adding this sort of grouping functionality support.

Hope this helps answer the question.