public async Task <IActionResult> Create([Bind("ShopId,BookId,StockLevel")] ShopBook shopBook)
{
if (ModelState.IsValid)
{
await _shopService.AddBookToShop(shopBook);
return(RedirectToAction(nameof(Index)));
}
ViewData["ShopId"] = new SelectList(await _shopService.GetAllShops(), "Id", "Name", shopBook.ShopId);
ViewData["BookId"] = new SelectList(await _dataService.GetAllBooks(), "Id", "Title", shopBook.BookId);
return(View(shopBook));
}