public void Post([FromBody] Review review)
        {
            review.UserId = int.Parse(User.Identity.Name);
            _db.Reviews.Add(review);
            _db.SaveChanges();
            var thisDestination = _db.Destinations.Include(destination => destination.Reviews).FirstOrDefault(destination => destination.DestinationId == review.DestinationId);

            thisDestination.GetReviewNumber();
            thisDestination.GetReviewAverage();
            _db.Entry(thisDestination).State = EntityState.Modified;
            _db.SaveChanges();
        }
 public void Put(int id, [FromBody] Destination destination)
 {
     destination.DestinationId = id;
     if (destination.UserId == int.Parse(User.Identity.Name))
     {
         _db.Entry(destination).State = EntityState.Modified;
         _db.SaveChanges();
     }
 }