/**
  * Update a torrent.
  *
  * @param Torrent        $torrent
  * @param TorrentRequest $request
  *
  * @return \Illuminate\Http\RedirectResponse|\Illuminate\Routing\Redirector
  */
 public function update(Torrent $torrent, TorrentRequest $request)
 {
     $torrent->update($request->all());
     $this->syncTags($torrent, $request->input('tag_list'));
     return redirect('torrents');
 }