How to use $request->uri->getSegment() inside view?

I'm trying to use `$ request-> uri-> getSegment (1)` in the view but I get an error saying "Undefined variable: request", what should I do to display a given segment in the view?

I use this, in Model:

PHP Code:

$request = \Config\Services::request();
        $uri = $request->uri;
        $id = $uri->getSegment(3);