public function addBookmark(Request $request)
 {
     //scope
     $current_user = Auth::user();
     //create a new bookmark and associate with current user
     $bookmark = new Bookmark();
     $bookmark->user()->associate($current_user->id);
     //configure the bookmark
     $bookmark->name = $request->name;
     $bookmark->url = $request->url;
     $bookmark->private = $request->private == 'on' ? true : false;
     //save it
     $bookmark->save();
     //if there are tags assigned...
     if (!empty($request->tags)) {
         //lets make an array of the tags
         $tags = array();
         $in_tags = explode(',', $request->tags);
         //and associate each one to the current bookmark
         foreach ($in_tags as $in_tag) {
             $tag = Tag::firstOrNew(['name' => $in_tag, 'user_id' => $current_user->id]);
             $tag->user()->associate($current_user->id);
             $tag->save();
             array_push($tags, $tag);
         }
         //save the tags
         $bookmark->tags()->saveMany($tags);
     }
     //all is well, so pass back a message
     $message = array('status' => 'OK', 'message' => 'Bookmark added!');
     //redirect to the dashboard view with the message
     return redirect('dashboard')->with('message', $message);
 }