Filter products per machine

products/app/db/repository.go

@@ -2,10 +2,19 @@ package db
 
 import "gorm.io/gorm"
 
-func GetProducts(dbConn *gorm.DB) *[]Product {
-	var products []Product
+func GetProducts(dbConn *gorm.DB, machineId *int) *[]Product {
+	var (
+		products []Product
+		query    = dbConn
+	)
 
-	dbConn.Order("name").Find(&products)
+	if machineId != nil {
+		query = query.
+			Joins("LEFT JOIN machine_products mp ON mp.product_id = products.id").
+			Where("mp.machine_id = ?", machineId)
+	}
+
+	query.Order("name").Find(&products)
 
 	return &products
 }