/**
  * Display a listing of the resource.
  *
  * @return \Illuminate\Http\Response
  */
 public function index(Request $request)
 {
     $key = '';
     if ($request->has('key')) {
         $key = $request->input('key');
         $query = GuideComment::where('title', 'like', '%' . $key . '%')->orWhere('content', 'like', '%' . $key . '%');
     } else {
         $query = GuideComment::select();
     }
     $comments = $query->orderBy('guide_id', 'asc')->orderBy('id', 'desc')->with('guide', 'user')->paginate(20);
     return view('admin.guide.comments', compact('key', 'comments'));
 }