Gorm Serialize a field into multiple database columns

Describe the feature

I have a Go struct with a field that I'd like to be serialized into multiple database columns for efficiency purposes. For example

type Book struct {
  // Format: libraries/123/books/456
  Name string
}

And a database schema like:

CREATE TABLE Books (
  LibraryId  INTEGER  -- e.g. 123
  BookId     INTEGER  -- e.g. 456
);

My understanding is that the current Serializer/Scanner interface only supports a 1:1 mapping between fields and database columns.

Motivation

The format of the struct field is determined by API design style. But I'd like to store the struct field in a more compact, efficient representation in the database. The alternative is to create two structs, one for the API and one for the database, but that's a bit cumbersome and annoying to maintain.

Related Issues

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