public IActionResult PublicDecks()
        {
            DecksListViewModel decksList = new DecksListViewModel();

            decksList.Cards = _cardRepository.Cards;
            decksList.Decks = _deckRepository.Decks.OrderByDescending(d => d.DeckId);
            return(View(decksList));
        }
        public IActionResult MyDecks()
        {
            DecksListViewModel decksList = new DecksListViewModel();

            decksList.Cards = _cardRepository.Cards;
            decksList.Decks = _deckRepository.Decks.Where(d => d.UserId == _userManager.GetUserId(User));
            return(View(decksList));
        }