public ActionResult AddComment([FromBody] Comment commentDTO) { logger.LogInformation("AddComment method was called."); if (String.IsNullOrEmpty(commentDTO.Owner)) { throw new ValidationException("Validation error: comment owner field is empty!"); } else if (String.IsNullOrEmpty(commentDTO.Text)) { throw new ValidationException("Validation error: comment text is empty!"); } newsManager.AddComment(commentDTO); return(Ok()); }