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section_nav_tutorials.html
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section_nav_tutorials.html
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{%- comment -%}
Map grabs the tutorials sections, giving us an array of arrays. Join, flattens all
the items to a comma delimited string. Split turns it into an array again.
{%- endcomment -%}
{%- assign tutorials = site.data.tutorials | map: 'tutorials' | join: ',' | split: ',' -%}
{%- comment -%}
Because this is built for every page, lets find where we are in the ordered
document list by comparing url strings. Then if there's something previous or
next, lets build a link to it.
{%- endcomment -%}
{% for tutorial in tutorials -%}
{% assign tutorial_url = tutorial | prepend:"/tutorials/" | append:"/" -%}
{% if tutorial_url == page.url -%}
<div class="section-nav">
<div class="left align-right">
{% if forloop.first -%}
<span class="prev disabled">Back</span>
{% else -%}
{% assign previous = forloop.index0 | minus: 1 -%}
{% assign previous_page = tutorials[previous] | prepend:"/tutorials/" | append:"/" -%}
<a href="{{ previous_page | relative_url }}" class="prev">Back</a>
{% endif -%}
</div>
<div class="right align-left">
{% if forloop.last -%}
<span class="next disabled">Next</span>
{% else -%}
{% assign next = forloop.index0 | plus: 1 -%}
{% assign next_page = tutorials[next] | prepend:"/tutorials/" | append:"/" -%}
<a href="{{ next_page | relative_url }}" class="next">Next</a>
{% endif -%}
</div>
</div>
<div class="clear"></div>
{% break -%}
{% endif -%}
{% endfor -%}