app/serializers/species/autocomplete_taxon_concept_serializer.rb
class Species::AutocompleteTaxonConceptSerializer < ActiveModel::Serializer
attributes :id, :full_name, :author_year, :rank_name, :name_status, :matching_names
def rank_name
rank_with_locale = "rank_display_name_#{I18n.locale.to_s}"
object.send(rank_with_locale.to_sym)
end
end