/**
  * Update the specified resource in storage.
  *
  * @param  \Illuminate\Http\Request  $request
  * @param  int  $id
  * @return \Illuminate\Http\Response
  */
 public function update(Request $request, $id)
 {
     $this->validate($request, ['status' => 'required:string']);
     \App\Order::query()->where('order_id', $request['order_id'])->update(array('status' => $request['status']));
     return redirect('admin/orders');
 }