CakePHP pagination and the get parameters

I have a problem with the pagination in my search page.
When a user search something I have a url like domain.com/search/?s=keyword
but paginator gives me links like domain.com/search/page:x,
so in the next and prev and numbers page the get parameter is lost. I need to configure paginator to get links like domain.com/search/page:x/?s=keyword
But I can’t do this.

I need to know how to configure

$paginator->options();
$paginator->next();
$paginator->prev();
$paginator->numbers();

to get the needed efect.
Thanx.

CakePHP pagination and the get parameters