// Skickar ViewModel till partial-view för 3d-rum, miljön 2
        public async Task <IActionResult> Room3d_2(int id)
        {
            var exhibitions = await artDbRepo.GetCollection(id);

            var exhibitionsForRoom = await artDbRepo.GetCollectionsWithArt();

            var artist = await artDbRepo.GetArtistByCollection(exhibitions);

            ExhibitionsViewModel exhibitionsViewModel = new ExhibitionsViewModel(exhibitions, exhibitionsForRoom, artist);

            return(PartialView("/views/exhibitions/Room3d_2.cshtml", exhibitionsViewModel));
        }
        public async Task <IActionResult> Index(int id)
        {
            var exhibitions = await artDbRepo.GetCollection(id);

            var exhibitionsForRoom = await artDbRepo.GetCollectionsWithArt();

            var artist = await artDbRepo.GetArtistByCollection(exhibitions);

            ExhibitionsViewModel exhibitionsViewModel = new ExhibitionsViewModel(exhibitions, exhibitionsForRoom, artist);

            return(View(exhibitionsViewModel));
        }