//Update
        public IHttpActionResult Post(int id, Listing updates) {

            if (ModelState.IsValid) {
                updates.Id = id;
                if (_repo.Update(updates)) {
                    return Ok();
                }

                return InternalServerError();
            }

                return BadRequest(ModelState);
        }
        //Create
        public IHttpActionResult Post(Listing newListing) {

            if (ModelState.IsValid) {
                try {
                    //Stages
                    _repo.Add(newListing);
                    //Commits
                    _repo.SaveChanges();
                    return Created("/api/listings/" + newListing.Id, newListing);
                }
                catch {
                    return InternalServerError();
                }
            }
            return BadRequest(ModelState);
        }