Bugfix - voucher items manipulation fixed.

shop/shopservice.cpp

@@ -173,6 +173,10 @@ void ShopService::pay(VoucherPtr voucher)
     voucher->setPayDateTime(QDateTime::currentDateTime());
 
     this->update(voucher, &session);
+
+    if (!session.isValid()) {
+        qDebug() << session.firstError().text();
+    }
 }
 
 void ShopService::updateRelatedItem(VoucherItem* item, int countAdded)
@@ -526,10 +530,11 @@ void ShopService::update(VoucherPtr entity, qx::QxSession* pSession) {
 
         Service::update(entity, pSession);
         auto oldItems = entity->items();
-        entity->clearItems();
-        load(entity);
 
-        for (auto item : entity->items()) {
+        Service<VoucherItem> srvItem;
+        auto items = srvItem.all("voucher = " + QString::number(entity->id()));
+
+        for (auto item : items) {
             auto newItem = std::find_if(oldItems.begin(), oldItems.end(), [item](auto it){
                 return item->id() == it->id();
             });