fixing

src/gomazon/main.go

@@ -41,13 +41,13 @@ func main() {
 	router.GET("/ratings", RatingHandler.ReadRatings)               //all Ratings
 
 	//Bankaccount
-	router.POST("/bankaccounts", bankAccountHandler.CreateBankAccount) // new Bankaccount
-	router.PUT("/bankaccounts", bankAccountHandler.UpdateBankAccount)  // Transfer
+	router.POST("/bankaccounts", bankAccountHandler.CreateBankAccount)         // new Bankaccount
+	router.PUT("/bankaccounts/transfer", bankAccountHandler.UpdateBankAccount) // Transfer
 
 	//ShoppingCart
-	router.POST("/ShoppingCart", ShoppingCartHandler.CreateShoppingCart)                   //new ShoppingCart
-	router.POST("/ShoppingCart/Product/:id", ShoppingCartHandler.AddProductToShoppingCart) //add Product
-	router.POST("/ShoppingCart/pay", ShoppingCartHandler.TransferMoney)                    //pay
+	router.POST("/shoppingcart", ShoppingCartHandler.CreateShoppingCart)                   //new ShoppingCart
+	router.POST("/shoppingcart/product/:id", ShoppingCartHandler.AddProductToShoppingCart) //add Product
+	router.POST("/shoppingcart/pay", ShoppingCartHandler.TransferMoney)                    //pay
 
 	router.Run(":8080")
 }

src/gomazon/model/position.go

@@ -4,8 +4,10 @@ import "gorm.io/gorm"
 
 type Position struct {
 	gorm.Model
-	Amount     int     `gorm:"notNull"`
-	ProductId  uint    `gorm:"notNull"`
-	Price      float64 `gorm:"notNull"`
-	Totalprice float64 `gorm:"notNull"`
+	Amount         int          `gorm:"notNull"`
+	ProductId      uint         `gorm:"notNull"`
+	Price          float64      `gorm:"notNull"`
+	Totalprice     float64      `gorm:"notNull"`
+	ShoppingCartId uint         `gorm:"notNull"`
+	ShoppingCart   ShoppingCart `gorm:"-"`
 }

src/gomazon/model/rating.go

@@ -7,5 +7,5 @@ type Rating struct {
 	Username   string `gorm:"notNull"`
 	Content    string `gorm:"notNull"`
 	Rating     int    `gorm:"notNull"`
-	ProductId  uint
+	ProductId  uint   `gorm:"notNull"`
 }

src/gomazon/service/shopping_cart.go

@@ -56,10 +56,11 @@ func (s *ShoppingCartService) AddProductToShoppingCart(username string, ProductI
 	gesPrice := Product.Price * float64(amount)
 
 	position := model.Position{
-		Amount:     amount,
-		ProductId:  Product.ID,
-		Price:      Product.Price,
-		Totalprice: gesPrice,
+		Amount:         amount,
+		ProductId:      Product.ID,
+		Price:          Product.Price,
+		Totalprice:     gesPrice,
+		ShoppingCartId: ShoppingCart.ID,
 	}
 
 	// Add position to shoppingcart
@@ -112,6 +113,10 @@ func (s *ShoppingCartService) TransferMoney(username string) error {
 
 	ShoppingCart.Totalprice = 0.0
 
+	if err := db.DB.Where("shopping_cart_id = ?", ShoppingCart.Username).Delete(&model.Position{}).Error; err != nil {
+		return err
+	}
+
 	result = db.DB.Save(ShoppingCart)
 	if result.Error != nil {
 		log.Error("Could not save Shoppingcart")