public function store(TagRequest $request)
 {
     if (Gate::denies('store-tag')) {
         abort(403);
     }
     $tag = new Tag();
     $tag->name = $request->input('name');
     $tag->save();
     return $tag;
 }
 public function queryTag(Request $request)
 {
     $queryTagName = $request->input('name');
     $tags = Tag::where('name', 'like', '%' . $queryTagName . '%')->get();
     return $tags;
 }