public async Task <IActionResult> Post([FromBody] TripViewModel trip)
        {
            if (ModelState.IsValid)
            {
                var newTrip = Mapper.Map <Trip>(trip);
                newTrip.UserName = User.Identity.Name;

                _repo.AddTrip(newTrip);

                if (await _repo.SaveChangesAsync())
                {
                    return(Created($"api/trips/{trip.Name}", Mapper.Map <TripViewModel>(newTrip)));
                }
                else
                {
                    return(BadRequest("Failed to save changes to the database"));
                }
            }
            else
            {
                return(BadRequest(ModelState));
            }
        }