public async Task <IActionResult> GiveOutBook(BookViewModel model) { var success = await _booksProvider.GiveOutBookAsync(model.Id); if (!success) { return(View("ShowMessage", new MessageModel("/Librarian/BookDelivery", "Ошибка при выдаче книги", true))); } return(View("ShowMessage", new MessageModel("/Librarian/BookDelivery", "Книга успешно выдана", false, 1))); }