From: Gerald Bauer <geraldbauer2007@...>
Date: 2008-07-22T00:56:50+09:00
Subject: Re: Reading non-standard/custom attributes in Atom feeds with standard Ruby RSS Library - How?

Hello,

>   Using the latest version of the standard web feed library
> (RSS::Parser) [1], that is, 0.2.4, I tried to configure or extend it
> so I can read/access non-standard (custom) feed attributes such as the
> Google Readers' original-id. Example:
>
>  <id gr:original-id="http://rubybook.wordpress.com/p=20">tag:google.com,2005:reader/item/7931b28aaa03e64c</id>
>
>   If anyone has tried something similar or has any tips or tricks on
> how to go about I greatly appreciate it.

   I've got it working. [1] It looks like the standard RSS::Parser
library cannot handle XML attributes with a dash (such as original-id)
because it generates Ruby attributes using the XML attribute's name,
thus, leading to invalid Ruby identifiers. Using a .gsub(
'gr:original-id', 'gr:original_id' ) on the feed data works around it
although ideally I rather prefer not to.

  Any comments, fixes or alternative workarounds welcome. Cheers.


[1]:
module RSS
  module Atom

    class Feed
      class Entry

       class Id < RSS::Element

         install_get_attribute( 'original_id', "", false )

       end

      end
    end
  end
end