{% comment %} Collection time span. Extracts all content of "date" field, displays the smallest and largest. You may encounter issues if you do not have a correctly ISO formatted "date" field. E.G. --> {% include index/time.html %} Options: - "date_field" - optionally change the field used for date range. Only ISO or year-only dates are supported. (optional, default "date") - "btn-color" - a bootstrap color class to theme the buttons. Can be any bootstrap template color (e.g. info, success) or outline (e.g. outline-info, outline-success), including colors created in config-theme-colors. (optional, default "outline-secondary") - "heading_level" = customize the level of the heading if necessary for accessibility, choose "h1", "h2", "h3", etc (optional, default "h2") {%- endcomment -%} {% assign date_field = include.date_field | default: 'date' %} {% if site.data.theme.timeline-child-objects == true %} {%- assign date-items = site.data[site.metadata] | where_exp: 'item','item.objectid' -%} {% else %} {%- assign date-items = site.data[site.metadata] | where_exp: 'item','item.parentid == nil' -%} {% endif %} {%- assign raw-dates = date-items | map: date_field | compact | uniq -%} {%- capture clean-years -%}{% for date in raw-dates %}{% if date contains "-" %}{{ date | strip | split: "-" | first }}{% elsif date contains "/" %}{{ date | strip | split: "/" | last }}{% else %}{{ date | strip }}{% endif %}{% unless forloop.last %};{% endunless %}{%- endfor -%}{%- endcapture -%} {%- assign date-range = clean-years | remove: " " | split: ";" | uniq | sort -%}
{{ date-range | first }} to {{ date-range | last }}
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