如何在beego模型中更改外键

如何解决如何在beego模型中更改外键

type UserReaded struct {
   Id        uint32 `orm:"auto;size(11)"` 
 Uid     uint32 `orm:"size(11)"` 
 NovId    uint32 `orm:"size(11)"` 
 ChapterNo      uint32 `orm:"size(11)"` 
 CreatedAt uint32 `orm:"size(11);default(0)"` 
 UpdatedAt uint32 `orm:"size(11);default(0)"`
 Novel *Novel `orm:"null;rel(one);on_delete(set_null)"`
}

func (m *UserReaded) ListReaded(uid uint32) []*UserReaded {
   list := make([]*UserReaded,0)
   m.query().Filter("uid",uid).RelatedSel().All(&list)
   return list
}

默认的小说fk是novel_id，但我想像nov_id那样定义fk。