public async Task <ActionResult> AddTranslation(ImageTranslation translation)
        {
            if (ModelState.IsValid)
            {
                db.AddTranslation(translation);
                await db.SaveChangesAsync();

                return(RedirectToAction("Index"));
            }

            return(View(translation));
        }
        public async Task <ActionResult> AddTranslation(int?id)
        {
            if (id == null)
            {
                return(new HttpStatusCodeResult(HttpStatusCode.BadRequest));
            }

            var image = await db.GetByIdAsync(id);

            if (image == null)
            {
                return(HttpNotFound());
            }

            var model = new ImageTranslation
            {
                ImageId = image.Id
            };

            ViewBag.Languages = LanguageDefinitions.GenerateAvailableLanguageDDL(image.Translations.Select(t => t.LanguageCode));

            return(View(model));
        }