public function postComment(Request $request)
{
$this->validate($request, ['comment' => 'required']);
$comment = new TrackComment();
$comment->track_id = $request->track_id;
$comment->user_id = Auth::user()->id;
$comment->comment = $request->comment;
$comment->save();
return redirect('track/view/' . $request->track_id);
}
