Rails + ActiveScaffold -> set_default_options

Question

I can't seem to set default options at the ApplicationController level. I can do it just fine at the Controller level, but I want to be able to set some defaults here. This is the code that I'm using (for example):

ActiveScaffold.set_defaults do |config|
    config.update.link.label = ""
    config.list.per_page = 15
end

Any help would be massively appreciated :)