@Override
public User editCity(Long userId, String city) {
User user = getUserById(userId);
EntityTransaction transaction = null;
if (user != null && city != null) {
transaction = startSaveTransaction();
user.setCity(city);
}
try {
entityManager.persist(user);
transaction.commit();
return user;
} catch (Exception e) {
transaction.rollback();
}
return null;
}
