public function computeOrder(Request $request)
 {
     if ($request->isMethod('post')) {
         $main = Menu::select('id', 'description', 'price')->where('id', $request->get("maindish"))->first();
         $side = Menu::select('id', 'description', 'price')->where('id', $request->get("sidedish"))->first();
         $rice = Menu::select('id', 'description', 'price')->where('id', $request->get("rice"))->first();
         $total = 0;
         $is_combo = false;
         # check if combo meal is present;
         if (!is_null($main) && !is_null($side) && !is_null($rice)) {
             $is_combo = true;
             $total = 60.0;
         }
         if (!is_null($main)) {
             if (!$is_combo) {
                 $total += $main->price;
             }
             $info['main_dish'] = $main->toJson();
         }
         if (!is_null($side)) {
             if (!$is_combo) {
                 $total += $side->price;
             }
             $info['side_dish'] = $side->toJson();
         }
         if (!is_null($rice)) {
             if (!$is_combo) {
                 $total += $rice->price;
             }
             $info['rice'] = $rice->toJson();
         }
         if ($request->has('extra')) {
             foreach ($request->get('extra') as $order_id) {
                 $extra = Menu::select('id', 'description', 'price')->where('id', $order_id)->get()->first();
                 $total += $extra->price;
                 $info['extra'][] = $extra->toJson();
             }
             $info['extra'] = json_encode($info['extra']);
         }
         dd($info);
         $info['user_id'] = Auth::user()->id;
         $order = Order::create($info);
         return view('userorder.success', ['total' => $total]);
     }
     if (count($request->all()) < 1) {
         return redirect('/order/step/2');
     }
 }