added relantionship in chinabankslip model

added update chinabankslip feature

app/Http/Controllers/ChinaBankSlipController.php

@@ -62,4 +62,26 @@ class ChinaBankSlipController extends Controller
         return response()->json(['message'=>'success'], 201);
     }
 
+    public function update(Request $request, $id){
+        $booking = Booking::where('id',$id)->first();
+        $china_bankslip = $booking->chinaBankSlip()->first();
+
+        // TODO: first or fail 
+        if(!$china_bankslip){
+            return response()->json(["message"=> "not found"],400);
+		}
+		
+        $china_bankslip->actual_transfer_amount = $request->input('actual_transfer_amount');
+        $china_bankslip->date = $request->input('date');
+        $china_bankslip->details = $request->input('details');
+        $china_bankslip->save();
+
+        // update booking status 
+		$booking->status = 5;
+		$booking->admin_status = 6; 
+		$booking->save();
+
+        return response()->json(["message"=> "Success"],200);
+    }
+
 }