module Admin::NodeHelper

def expanded_rows
  unless @expanded_rows
    @expanded_rows = case
    when rows = cookies[:expanded_rows]
      rows.split(',').map { |x| Integer(x) rescue nil }.compact
    else
      []
    end
    if homepage and !@expanded_rows.include?(homepage.id)
      @expanded_rows << homepage.id
    end
  end
  @expanded_rows
end