public ActionResult EditExercise(int id, EditExerciseViewModel model)
        {
            try
            {
                if (ModelState.IsValid)
                {
                    var result = adminServices.EditCurrentExercise(id, model, User.Identity.GetUserId());
                    return(PartialView("_EditExerciseResult", result));
                }

                throw new Exception();
            }
            catch
            {
                return(View(model));
            }
        }