I come across a situation in Laravel while calling a store() or update() method with Request parameter to add some additional value to the request before calling Eloquent fu
To add a new parameter for ex: newParam to the current Request Object, you can do:
$newParam = "paramvalue";
$request->request->add(['newParam' => $newParam]);
After adding the new parameter, you would be able to see this newly added parameter to the Request object by:
dd($request);//prints the contents of the Request object