{% macro is_active(active) -%} {% if active %}active{% endif %} {%- endmacro %} {% macro link_to_item(ics_id) -%} {% if ics_id %} {{ ics_id }} {% else %} {{ ics_id }} {% endif %} {%- endmacro %} {% macro link_to_items(ics_ids) -%} {% for ics_id in ics_ids %} {{ link_to_item(ics_id) }} {% endfor %} {%- endmacro %}