/**
  * Search posts for tag
  * @param  string $tag
  * @return Response
  */
 public function searchTag($tag)
 {
     try {
         $posts = Post::whereHas('tags', function ($q) use($tag) {
             $q->where('tag', $tag);
         })->where('seen', 1)->where('is_active', 1)->orderBy('created_at', 'desc')->paginate($this->itemPerPage);
         return view('website.index', compact('posts'));
     } catch (Exception $e) {
         $message = "Không tồn tại bài viết nào cho tag";
         $alertClass = "alert-danger";
         return redirect(route('website.index'))->with(compact('message', 'alertClass'));
     }
 }
 public function listByTag($tag)
 {
     $model = Post::whereHas('tags', function ($q) use($tag) {
         $q->where('name', 'LIKE', "%" . $tag . "%");
     })->with('tags')->get();
     if ($model->count()) {
         $output = ['error' => false, 'count' => $model->count(), 'message' => 'Found many posts!', 'data' => $model->toArray()];
     } else {
         $output = ['error' => true, 'message' => 'Not found any post belong to "' . $tag . '"', 'count' => 0];
     }
     return response()->json($output, 200);
 }