Ruby on Rails

I have a strong handle on when to use a helper -- at least I think so. A helper may include some logic (not enough to belong in the model) and it presents html as its output. So I have a conceptual problem about this solution that I've built:

#helpers/people_helper.rb
def person_roles
(%W(assistant author collector editor foreword illustrator interviewer introduction narrator notes translator) + Role.group('name').map(&:name)).uniq().sort
end

I use the output in a view, as part of a collection_select picker for a string-based attribute. This picker has a JavaScript "combobox" behavior added to it, so the editor can add new roles to the list at whim. But the output is an array. Does this invalidate my use of a helper method? Or am I thinking too much about the label "helper" here?

Thanks,

Walter

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