ApplicationController.class_eval do

  before_filter :populate_sidebars

  protected

    def populate_sidebars
      @sidebar_modules = {:left => {}, :right => {}}

      Refinery::Blog::Category.all.each do |c|
        mod = []
        c.posts.limit(5).each do |post|
          mod << SidebarPostDecorator.new(post)
        end

        @sidebar_modules[:left][c.title] = mod
      end
    end
end