add tagview

repositories/shopItemRepository.go

@@ -1,19 +1,19 @@
 package repositories
 
-import(
-	"strconv"
+import (
 	"gorm.io/gorm"
+	"strconv"
 
 	"git.dynamicdiscord.de/kalipso/zineshop/models"
-)	
+)
 
 type ShopItemRepository interface {
-	Create(models.ShopItem) (models.ShopItem, error)	
+	Create(models.ShopItem) (models.ShopItem, error)
 	GetAll() ([]models.ShopItem, error)
 	GetAllPublic() ([]models.ShopItem, error)
 	GetById(string) (models.ShopItem, error)
+	GetByTagId(string) ([]models.ShopItem, error)
 	GetVariantById(string) (models.ItemVariant, error)
-	//GetByTagId(string) ([]models.ShopItem, error)
 	Update(models.ShopItem) (models.ShopItem, error)
 	DeleteById(string) error
 }
@@ -31,7 +31,7 @@ func NewGORMShopItemRepository(db *gorm.DB) ShopItemRepository {
 func (r *GORMShopItemRepository) Create(shopItem models.ShopItem) (models.ShopItem, error) {
 	result := r.DB.Create(&shopItem)
 	if result.Error != nil {
-		return models.ShopItem{}, result.Error	
+		return models.ShopItem{}, result.Error
 	}
 
 	return shopItem, nil
@@ -68,6 +68,23 @@ func (r *GORMShopItemRepository) GetById(id string) (models.ShopItem, error) {
 	return shopItem, nil
 }
 
+func (r *GORMShopItemRepository) GetByTagId(id string) ([]models.ShopItem, error) {
+	tagId, err := strconv.Atoi(id)
+
+	if err != nil {
+		return nil, err
+	}
+
+	var shopItems []models.ShopItem
+	result := r.DB.Joins("JOIN item_tags ON item_tags.shop_item_id = shop_items.id").Where("item_tags.tag_id = ?", tagId).Preload("Tags").Preload("Variants").Find(&shopItems)
+
+	if result.Error != nil {
+		return nil, result.Error
+	}
+
+	return shopItems, nil
+}
+
 func (r *GORMShopItemRepository) GetVariantById(id string) (models.ItemVariant, error) {
 	itemVariantId, err := strconv.Atoi(id)
 
@@ -85,7 +102,6 @@ func (r *GORMShopItemRepository) GetVariantById(id string) (models.ItemVariant,
 	return itemVariant, nil
 }
 
-
 func (r *GORMShopItemRepository) Update(shopItem models.ShopItem) (models.ShopItem, error) {
 	err := r.DB.Model(&shopItem).Association("Tags").Replace(shopItem.Tags)
 	if err != nil {