I want to create many to many relation using beego. This is my struct:
type User struct {
Id int
UserName string `orm:"unique"`
Department string
Email string
Groups []*Group `orm:"rel(m2m)"`
}
type Group struct {
Id int
GroupName string `orm:"unique"`
Introduce string
Users []*User `orm:"reverse(many)"`
}
How do I relate between these structures.
o := orm.NewOrm()
u1 := User{UserName: "zhangszan"}
u2 := User{UserName: "lisi"}
g1 := Group{GroupName: "g1"}
g2 := Group{GroupName: "g2"}
o.InsertMulti(2, []User{u1, u2})
o.InsertMulti(2, []Group{g1, g2})
m2mu1 := o.QueryM2M(&u1, "Groups")
m2mu2 := o.QueryM2M(&u2, "Groups")
m2mu1.Add(&g1)
m2mu1.Add(&g2)
m2mu2.Add(&g2)
beego.Debug(u1)
beego.Debug(u2)
The console prints two empty arrays. I think there should be values in these two arrays. Does anyone know how to solve this problem? thank.
{0 zhangszan []}
{0 lisi []}
Environment