/**
* list all articles belongs to certain tag
* @param $req
* @return \Illuminate\Contracts\View\Factory|\Illuminate\View\View
*/
public function tag($req)
{
$p = TAG::where('slug', $req)->first();
$pages = $p->pages()->paginate($this->paginate);
return view($this->view->index_tag, compact('pages'));
}
