How can I get access to my helpers from my feed.xml.builder

#1

I wrapped SecureRandom.uuid in the helper method random_uuid, which is in config.rb, to use in my posts as a unique id.

How can I get access to the random_uuid method from the feed.xml.builder file?
I thought that I should be able to access it from the block parameter like below, but that is not working.

blog("podcast").articles do |article|

  xml.guid( article.random_uuid)
end
#2

I misunderstood how custom defined helpers worked. To get access to custom defined helpers, all I needed to do was call the helper in the feed.xml.builder file. I thought they were supposed to be in the data hash.