public IActionResult Add(CategoriesModel model)
        {
            if (ModelState.IsValid)
            {
                CategoriesManager.Create(model.Name);
                return(RedirectToAction("Index"));

                /*using (var db = new DbContext())
                 * {
                 *  db.Categories.Add(new Categories()
                 *  {
                 *      Name = model.Name,
                 *  });
                 *
                 *  db.SaveChanges();
                 *
                 * }*/
                //model.Id = Categories.Count + 1;

                //modelis derīgs, var veikt datu saglabāšanu
                //Categories.Add(model);
            }

            return(View(model));
        }