module Admin::NodeHelper

def expanded_rows
  unless @expanded_rows
    @expanded_rows = if rows = cookies[:expanded_rows]
                       rows.split(',').map do |x|
                         begin
                                                                    Integer(x)
                         rescue StandardError
                           nil
                                                                  end
                       end .compact
                     else
                       []
    end
    if homepage && !@expanded_rows.include?(homepage.id)
      @expanded_rows << homepage.id
    end
  end
  @expanded_rows
end