/**
  * Update the specified Comment in storage.
  *
  * @param  int    $id
  * @param CreateCommentRequest $request
  *
  * @return Response
  */
 public function update($id, CreateCommentRequest $request)
 {
     $comment = $this->commentRepository->findCommentById($id);
     if (empty($comment)) {
         Flash::error('Comment not found');
         return redirect(route('comments.index'));
     }
     $comment = $this->commentRepository->update($comment, $request->all());
     Flash::message('Comment updated successfully.');
     return redirect(route('comments.index'));
 }