public ActionResult Index(string name, string email, int rate, string message)
{
Feedback feedback = new Feedback();
feedback.AddFeedback(name, email, rate, message);
Category category = new Category();
ViewBag.Category = category.GetCategories();
ViewBag.ActiveFeedback = "nav__link--current";
var data = feedback.GetFeedbacks();
return(View(data));
}