How do I use whereYear inside filter Laravel

I have a collection that I am trying to filter on created_at year. Laravel 5.3. I am trying to use whereYear inside my filter but it's sqwaking that the method is undefined. How do I define it? Or is there a better way?

      $datas = Campaign::all();

      if($request->year) {
         $value = $request->year;
         $datas = $datas->filter(function($data) use ($value) {
             return $data->created_at->whereYear($value);
         });
       }

Thanks!

via Chebli Mohamed