public IHttpActionResult Get(int id)
        {
            PortfolioModel portfolio;

            try
            {
                if (portfolioService.CheckAccess(RequestContext.Principal.Identity.GetUserId(), id))
                {
                    portfolio = Mapper.Map <PortfolioDTO, PortfolioModel>(portfolioService.GetPortfolio(id));
                }
                else
                {
                    throw new Exception("You don't have access to portfolio with id: " + id);
                }
            }
            catch (Exception ex)
            {
                ModelState.AddModelError("", ex.Message);
                logger.Error(ex.ToString());
                return(BadRequest(ex.ToString()));
            }
            return(Ok(portfolio));
        }