public IActionResult CreateTrackedItem( string ownerIdentityName, [FromBody] TrackedItemForCreationDto newTrackedItemDto) { if (newTrackedItemDto == null) { return(BadRequest()); } if (ModelState.IsValid == false) { return(BadRequest(ModelState)); } if (!_repo.ClassEntityExists(ownerIdentityName)) { return(NotFound()); } var finalTrackedItem = _mapper.Map <Entities.TrackedItem>(newTrackedItemDto); //START: Might be able to replace this by defining student name as a Key value for EFCore var trackedItems = _repo.GetAllTrackedItemsFromClass(ownerIdentityName); foreach (var s in trackedItems) { if (s.Name == finalTrackedItem.Name) { return(UnprocessableEntity("There is already a Tracked Item with that name in this Class")); } } //STOP: Might be able to replace this by defining student name as a Key value for EFCore _repo.AddTrackedItem(ownerIdentityName, finalTrackedItem); if (!_repo.Save()) { return(StatusCode(500, $"A problem happened while handling your request to create a Tracked Item with name: {newTrackedItemDto.Name}.")); } var trackedItemToReturn = _mapper.Map <TrackedItemDto>(finalTrackedItem); return(CreatedAtAction("GetTrackedItem", new { trackedItemId = trackedItemToReturn.Id }, trackedItemToReturn)); }