/**
  * Update the specified resource in storage.
  *
  * @param  int  $id
  * @return Response
  */
 public function update(Request $request, $id)
 {
     $info = Task::updateOrCreate(['id' => $id], $request->input());
     if ($info) {
         return "Update success";
     } else {
         return 'Update fail';
     }
 }