public IActionResult GetTrailsInNationalPark(int nationalParkId) { var objList = _trailRepo.GetTrailsInaNationalPark(nationalParkId); var trailListDto = new List <TrailDto>(); if (objList == null) { return(NotFound()); } foreach (var obj in objList) { trailListDto.Add(_mapper.Map <TrailDto>(obj)); } return(Ok(trailListDto)); }