comp.lang.ruby

Gerald Bauer

7/21/2008 3:57:00 PM

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&...
>
> 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