public IActionResult Index()
        {
            var plants = plantService.GetAllPlantsOfUser(User.Identity.Name);
            IEnumerable <MyPlantsPlantCardViewModel> plantCards = plants.Select(x => new MyPlantsPlantCardViewModel()
            {
                Id = x.Id, Name = x.Name, WateringPeriod = x.WateringPeriod
            });
            MyPlantsViewModel mpvw = new MyPlantsViewModel()
            {
                plantCards = plantCards
            };

            return(View(mpvw));
        }