How to pass a variable to layouts?

Question

Laravel

Hello. Tell me how it's done. There is a controller and there are two variables (one variable is the records, the second is the number of records), from the controller I pass the first variable to the view, everything is ok, then I need to transfer the second variable to the layout (that is, to the main template) which includes the view in which I pass the first variable. How can I do that?
controller:

$user = User::find(1);
        $unreadNotifications = $user->notifications()->unread()->get();
        $notifications = $user->notifications()->unread()->count();
        return view('user.notifications', [
            'unreadNotifications' => $unreadNotifications,
        ]);

$notificationsI need to pass in the layouts which includes the viewuser.notifications

Answer 1

Оно?
View::share('key', $value);

Answer 2

а что сложного?

return view('user.notifications', [
    'var' => $var1,
    'name' => $var2
]);

Еще один вариант (их куча):

return view('user.notifications', compact('unreadNotifications', 'notifications'));