app/serializers/checklist/history_taxon_concept_serializer.rb
class Checklist::HistoryTaxonConceptSerializer < ActiveModel::Serializer
attributes :id,
:kingdom_name, :phylum_name, :class_name, :order_name, :family_name,
:genus_name, :species_name, :subspecies_name,
:full_name, :author_year, :rank_name
has_many :historic_cites_listing_changes_for_downloads,
:key => :listing_changes,
:serializer => Checklist::HistoryListingChangeSerializer
def include_author_year?
@options[:authors]
end
end