public async Task <IActionResult> AddComment(ArticleViewModel articleComment)
        {
            var mappedEntity = mapper.Map <CommentViewModel, Comment>(articleComment.Comment);

            mappedEntity.ArticleId     = articleComment.Id;
            mappedEntity.CommenterName = userIdentity.GetName();
            await commentService.AddComment(mappedEntity);

            return(RedirectToAction("Article", new { id = articleComment.Id }));
        }