date_label = json.has_key?('dates') && json['dates'].length > 0 ?
                   json['dates'].map do |date|
                     if date['expression']
                       date['date_type'] == 'bulk' ? "#{I18n.t("date_type_bulk.bulk")}: #{date['expression']}" : date['expression']
                     elsif date['begin'] and date['end']