using Where in views Laravel 5.1

I'm relative new in laravel, in my first app I have a method in the controller that pass a list of links to the view, but in the view I only need some of those links so in the view I have this:

$links->where('menu_id', 2)

This works in my developer environment but don't work in production server.

Someone knows why? or knows another way to filter the results in the view?

via Chebli Mohamed