Inherited_Resource, Mongo_Mapper, MongoMapper_ext (for slugs) monkey patch.rb

InheritedResources::BaseHelpers.module_eval do
  def resource
      get_resource_ivar || end_of_association_chain.respond_to?('by_slug') ? set_resource_ivar(end_of_association_chain.by_slug(params[:id])) : set_resource_ivar(end_of_association_chain.find(params[:id]))
  end
  
  def collection
    get_collection_ivar || set_collection_ivar(end_of_association_chain.all)
  end
end

nice work