public function postAdd(Request $request)
 {
     $content = new Content();
     $content->title = $request->input('title');
     $content->body = $request->input('content');
     $content->status = $request->input('status');
     $content->user_id = \Auth::user()->id;
     $content->save();
     if ($request->has('alias')) {
         $alias = new UrlAlias();
         $alias->path = $request->input('alias');
         $content->alias()->save($alias);
         $content->save();
     }
     return \Redirect::to('admin');
 }