Gorm Should I define struct tag in DAO struct or DTO struct or both

Your Question

The model struct to AutoMigrate(correspond to db table, call it DAO) is different to the struct to receive gorm query result(such as .First() .Take(), call it DTO), and I use features like many2many and polymorphic.

The document you expected this should be explained

https://gorm.io/zh_CN/docs/many_to_many.html

https://gorm.io/zh_CN/docs/polymorphism.html

Expected answer

Should I define struct tag like polymorphic and many2many in that field of DAO struct or DTO struct or both?