public IActionResult Create([FromBody] ArticleImageDto articleImageDto)
        {
            var articleImage = _mapper.Map <ArticleImage>(articleImageDto);

            try
            {
                _articleImageService.Create(articleImage);
                return(Ok());
            }
            catch (AppException ex)
            {
                return(BadRequest(new { message = ex.Message }));
            }
        }
        public IActionResult Update(int id, [FromBody] ArticleImageDto articleImageDto)
        {
            // map dto to entity and set id
            var articleImage = _mapper.Map <ArticleImage>(articleImageDto);

            articleImage.Id = id;

            try
            {
                // save
                _articleImageService.Update(articleImage);
                return(Ok());
            }
            catch (AppException ex)
            {
                // return error message if there was an exception
                return(BadRequest(new { message = ex.Message }));
            }
        }