title: using layouts for menus in rails
body: <p>With ruby on rails, the scaffolding creates layouts for all the controllers.  If I decide to use an application layout, then I need to delete all those layouts (otherwise they will override the application layout).  Now, I'm assuming most sites are going to want some site wide menu. The most straightforward place to put a site-wide menu would seem to be the application layout - but then I need to delete all the controller layouts.  If I don't use an application layout, then I could use a partial to recreate the menu in all my views.  Is there a 'rails' way of doing site wide menus - both options I've considered above seem lacking somehow.</p>