def find
      path = clean_content_pathname.join(page_id.tr("\\", "/")).cleanpath.to_s
      if !path.start_with?("#{clean_content_pathname}/")
        raise InvalidPageIdError.new "Invalid page id: #{page_id}"
      end
      path
    rescue ArgumentError
      raise InvalidPageIdError.new "Invalid page id: #{page_id}"
    end
def find
      path = clean_content_pathname.join(page_id.tr("\\", "/")).cleanpath.to_s
      if !path.start_with?("#{clean_content_pathname}/")
        raise InvalidPageIdError.new "Invalid page id: #{page_id}"
      end
      path
    rescue ArgumentError
      raise InvalidPageIdError.new "Invalid page id: #{page_id}"
    end
Produce a template path to the page, in a format understood by
 `render :template => find`