wip cart handling

models/cart.go

@@ -7,6 +7,7 @@ import (
 type CartItem struct {
 	gorm.Model
 	SessionId string `json:"sessionid" binding:"required" gorm:"not null"`
-	ShopItem ShopItem `json:"shopitem" gorm:"foreignKey:ID"` //gorm one2one
+	ShopItemId uint
+	ShopItem ShopItem `json:"shopitem" gorm:"foreignKey:ShopItemId"` //gorm one2one
 	Quantity int `json:"quantity" binding:"required"`
 }