variants

models/cart.go

@@ -9,5 +9,7 @@ type CartItem struct {
 	SessionId string `json:"sessionid" binding:"required" gorm:"not null"`
 	ShopItemId uint
 	ShopItem ShopItem `json:"shopitem" gorm:"foreignKey:ShopItemId"` //gorm one2one
+	ItemVariantId uint
+	ItemVariant ItemVariant `json:"itemvariant" gorm:"foreignKey:ItemVariantId"` //gorm one2one
 	Quantity int `json:"quantity" binding:"required"`
 }

models/shopItem.go

@@ -1,6 +1,7 @@
 package models
 
 import (
+	"fmt"
 	"gorm.io/gorm"
 )
 
@@ -14,6 +15,19 @@ Zines
 Books
 	- name, abstr, descr, price, tag
 */
+type Category string
+
+const (
+	Zine Category = "Zine"
+)
+
+func ParseCategory(s string) (c Category, err error) {
+	if s == "Zine" {
+		return Zine, nil
+	}
+
+	return c, fmt.Errorf("Cannot parse category %s", s)
+}
 
 type ItemVariant struct {
 	gorm.Model
@@ -28,7 +42,7 @@ type ShopItem struct {
 	Name string `json:"name" binding:"required" gorm:"unique;not null"`
 	Abstract string `json:"Abstract" binding:"required"`
 	Description string `json:"description" binding:"required"`
-	Category string `json:"category"`
+	Category Category `json:"category"`
 	Variants []ItemVariant `json:"variant"`
 	BasePrice float64 `json:"basePrice"`
 	IsPublic bool `json:"isPublic" gorm:"default:true"`