public async Task <IActionResult> PutTripOffering([FromRoute] int id, [FromBody] TripOffering tripOffering)
        {
            if (!ModelState.IsValid)
            {
                return(BadRequest(ModelState));
            }

            if (id != tripOffering.ID)
            {
                return(BadRequest());
            }

            _context.Entry(tripOffering).State = EntityState.Modified;

            try
            {
                await _context.SaveChangesAsync();
            }
            catch (DbUpdateConcurrencyException)
            {
                if (!TripOfferingExists(id))
                {
                    return(NotFound());
                }
                else
                {
                    throw;
                }
            }

            return(NoContent());
        }
        public async Task <IActionResult> PostTripOffering([FromBody] TripOffering tripOffering)
        {
            if (!ModelState.IsValid)
            {
                return(BadRequest(ModelState));
            }

            _context.tripOfferings.Add(tripOffering);
            await _context.SaveChangesAsync();

            return(CreatedAtAction("GetTripOffering", new { id = tripOffering.ID }, tripOffering));
        }