public IActionResult GetReviewById(int reviewId)
        {
            var review = _reviewRepository.GetReviewById(reviewId);

            if (review == null)
            {
                ModelState.AddModelError("", "Some kind of error getting review");
                ViewBag.Message = $"There was a problem retrieving review from the " +
                                  $"database or no review with id {reviewId}  exists";
                review = new ReviewDto();
            }

            var reviewer = _reviewerRepository.GetReviewerOfAReview(reviewId);

            if (reviewer == null)
            {
                ModelState.AddModelError("", "Some kind of error getting reviewer");
                ViewBag.Message += $"There was a problem retrieving reviewer from the database " +
                                   $"or no reviewer for the review id {reviewId} exist";
                reviewer = new ReviewerDto();
            }

            var book = _reviewRepository.GetBookOfAReview(reviewId);

            if (book == null)
            {
                ModelState.AddModelError("", "Some kind of error getting book");
                ViewBag.Message += $"There was a problem retrieving book from the database " +
                                   $"or no book for the review id {reviewId} exist";
                book = new BookDto();
            }

            var reviewReviewerBookViewModel = new ReviewReviewerBookViewModel
            {
                Review   = review,
                Reviewer = reviewer,
                Book     = book
            };

            ViewBag.SuccessMessage = TempData["SuccessMessage"];
            return(View(reviewReviewerBookViewModel));
        }
        public IActionResult GetReviewById(int reviewId)
        {
            var review = _reviewRepository.GetReviewById(reviewId);

            if (review == null)
            {
                ModelState.AddModelError("", "Error getting a review");
                ViewBag.Review = $"There was a problem retrieving review with Id={reviewId} " +
                                 $"from the database or no review with this id exists";
                review = new ReviewDto();
            }

            var reviewer = _reviewerRepository.GetReviewerOfAReview(reviewId);

            if (reviewer == null)
            {
                ModelState.AddModelError("", "Error getting a reviewer");
                ViewBag.Reviewer = $"There was a problem retrieving reviewer of review Id={reviewId} " +
                                   $"from the database or no reviewer exists";
                reviewer = new ReviewerDto();
            }

            var book = _reviewRepository.GetBookOfAReview(reviewId);

            if (book == null)
            {
                ModelState.AddModelError("", "Error getting a book");
                ViewBag.Book = $"There was a problem retrieving book of review Id={reviewId} " +
                               $"from the database or no book exists";
                book = new BookDto();
            }

            var reviewReviewerBookViewModel = new ReviewReviewerBookViewModel()
            {
                Review   = review,
                Reviewer = reviewer,
                Book     = book
            };

            return(View(reviewReviewerBookViewModel));
        }