gorm的自定義主外鍵連接

package main

import (
   "fmt"
   _ "github.com/go-sql-driver/mysql"
   "github.com/jinzhu/gorm"
)

//type PackageManagement struct {
// Name string
// Age  int
//}
//
//
//type ListNode struct {
//     Val int
//     Next *ListNode
//}
//
//
//func reverseList(head *ListNode) *ListNode {
// if head ==nil{
//    return head
// }
// if head.Next ==nil{
//    fmt.Println(head.Val)
//    return head
// }
//
// resultNode := reverseList(head.Next)
// head.Next.Next = head;
// fmt.Println(head.Val)
// head.Next = nil
// return resultNode
//}

type User struct {
   Ids int64
   Emails   []Email `gorm:"ForeignKey:UserIds;AssociationForeignKey:Ids"`
}

type Email struct {
   Id int64
   Email   string
   UserIds  uint
}

func (User)TableName() string {
   return "user"
}

func (Email)TableName()string{
   return "email"
}

func main() {
   //head := ListNode{Val: 1,Next: &ListNode{Val: 2,Next: &ListNode{Val: 3,Next: nil}}}
   //reverseList(&head)
   db, err := gorm.Open("mysql", "root:123456@tcp(127.0.0.1:3306)/lol?charset=utf8&parseTime=true&loc=Local")
   if err!=nil{
      fmt.Printf(fmt.Sprint(err))
      return
   }
   users := []User{}
   db.Preload("Emails").Find(&users)
   fmt.Printf("%+v\n",users)
   db.Preload("Emails").Find(&users)
   fmt.Printf("%+v",users)



    //result := PackageManagement{}
   //err =db.Table("package_management").Select("package_management.name,package_management.age").First(&result).Error
   //if err!=nil{
   // fmt.Printf(fmt.Sprint(err))
   // return
   //}
    //fmt.Printf("%+v",result)

}