public IActionResult Dashboard()
 {
     //on refresh once after logout
     if (HttpContext.Session.GetInt32("current_id") == null)
     {
         return(RedirectToAction("Index"));
     }
     //Dashboard begins
     ViewBag.User_one          = travelFactory.CurrentUser((int)HttpContext.Session.GetInt32("current_id"));
     ViewBag.User_one_trips    = tripsFactory.CurrentUserTrips((int)HttpContext.Session.GetInt32("current_id"));
     ViewBag.User_Except_trips = tripsFactory.ExceptCurrentUserTrips((int)HttpContext.Session.GetInt32("current_id"));
     return(View("Dashboard"));
 }