源结构上的外键？

I'm starting with Gorm and trying to model the following:

type MyLink struct {
    gorm.Model
    Title             string
    Url               string
}

// group of links under a single title
type MyLinkSection struct {
    gorm.Model
    Title string
    Links []MyLink
}

type MyPage struct {
    gorm.Model
    PageUrl     MyLink
    Artists     []MyLinkSection
}

As you can see I want to be able to refer to the same struct, MyLink as both a foreign keyed object from MyPage but also as a one-to-many from MyLinkSection.

It seems I have to declare the foreign key ID in MyLink which would seem to make this not possible.

Is there any way of setting up tables like this? With a normal DB I'd just have a field in MyPage called my_link_id, with something similar for MyLinkSection.

It seems it is possible to specify forward relations:

PageUrl       MyLink `gorm:"ForeignKey:PageUrlId"`      
PageUrl Id    uint