app/serializers/feed_serializer.rb
class FeedSerializer < ActiveModel::Serializer
attributes :id, :title, :subtitle, :updated, :source, :rights, :tags, :categories, :icon, :entries
has_one :author
def entries
feed_entries_url(id)
end
end
class AuthorSerializer < ActiveModel::Serializer
attributes :name, :email, :uri
end