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']