/**
  * Store a newly created resource in storage.
  *
  * @return Response
  */
 public function store(CreateLessonRequest $request)
 {
     $input = $request->all();
     $lesson = Lesson::create($input);
     $links = $request->input('links');
     if ($links) {
         $this->sync($lesson, $links);
     }
     Flash::message('Lesson saved successfully.');
     return redirect(route('lessons.edit', [$lesson->id]));
 }