update openapi and add the exists_in_database flag to get-product

app/repos/productDescriptionRepo/productDescriptionRepo.go

@@ -1,6 +1,7 @@
 package productDescriptionRepo
 
 import (
+	"errors"
 	"fmt"
 
 	"git.ma-al.com/goc_daniel/b2b/app/db"
@@ -8,6 +9,7 @@ import (
 	"git.ma-al.com/goc_daniel/b2b/app/model/dbmodel"
 	constdata "git.ma-al.com/goc_daniel/b2b/app/utils/const_data"
 	"github.com/WinterYukky/gorm-extra-clause-plugin/exclause"
+	"gorm.io/gorm"
 )
 
 type UIProductDescriptionRepo interface {
@@ -35,8 +37,14 @@ func (r *ProductDescriptionRepo) GetProductDescription(productID uint, productid
 			IDLang:    int32(productid_lang),
 		}).
 		First(&ProductDescription).Error
-	if err != nil {
+
+	if errors.Is(err, gorm.ErrRecordNotFound) {
+		// handle "not found" case only
+		ProductDescription.ExistsInDatabse = false
+	} else if err != nil {
 		return nil, fmt.Errorf("database error: %w", err)
+	} else {
+		ProductDescription.ExistsInDatabse = true
 	}
 
 	return &ProductDescription, nil