api/app/serializers/gaku/guardian_serializer.rb
module Gaku
class GuardianSerializer < ActiveModel::Serializer
attributes %i( id name surname middle_name name_reading middle_name_reading surname_reading
gender birth_date relationship picture_file_name picture_content_type picture_file_size
picture_updated_at primary_address primary_contact addresses_count contacts_count user_id
created_at updated_at
)
end
end