public async Task <IActionResult> UpdateLandmark([FromBody] Landmark landmark) { if (landmark == null) { return(BadRequest()); } if (landmark.LandmarkName == string.Empty) { ModelState.AddModelError("Landmark Name", "The landmark name cannot be empty"); } if (!ModelState.IsValid) { return(BadRequest(ModelState)); } var landmarkToUpdate = await _landmarkRepository.GetLandmark(landmark.LandmarkId); if (landmarkToUpdate == null) { return(NotFound()); // status 404 } await _landmarkRepository.UpdateLandmark(landmark); return(NoContent()); //success }