Подгрузка связей laravel?

$tag = Tag::where('slug', $slug)->first();
        $articles = DB::table('articles')
                        ->leftJoin('article_tags', 'articles.id', 'article_tags.article_id')
                        ->select('articles.*')
                        ->where('article_tags.tag_id', $tag->id)
                        ->where('articles.published', '=', 1)->orderBy('articles.view', 'desc')->paginate(15);

@forelse($article->atags as $tag)
    <li><a href="{{route('tagsArticles', $tag->tag->slug)}}">{{$tag->tag->title}}</a></li>
     @empty
@endforelse

Undefined property: stdClass::$atags (View:post-tag.blade.php)