If you create a scaffold for your rails project, it will create for you a lot of things; for example, a way to show your object in xml format. But what about adding custom elements to that xml?
I solved in this way:
class MyObject < ActiveRecord::Base #[...] def to_xml(options={}) cp = attributes.clone cp["something"] = "some value" cp["another thing"] = self.some_relation.length cp.to_xml(options) end end
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