List Subcategories in GitHub Pages

Question

Edit: I\'ve created a repository here that tests jibe\'s answer below. I just end up getting a blank page when I visit /animals, so any help is

Answer 1

See simpyll.com for demo

See github for website code

assign var page_depth as the current pages depth using the path '/' as a count variable

{% assign page_depth = page.url | split: '/' | size %}

assign var page_parent as the slug of the last directory housing 'index.md'

{% assign page_parent = page.url | split: '/' | last %}

loop through every page in the website

{% for node in site.pages offset:1 %}

skip website root

{% if node.url == '/' %}
{{ continue }}
{% else %}

remove backslashed from each page in website

{% assign split_path = node.url | split: "/" %}

assign var node_last for each page in website

{% assign node_last = split_path | last %}

assign var node_parent as the slug of the last directory housing 'index.md' for each page in website

{% assign node_parent = node.url | remove: node_last | split: '/' | last %}

assign node_url for each page in website

{% assign node_url = node.url %}

loop through each slug in each page path in website

{% for slug in split_path offset:1 %}

assign var slug as the name of each slug therefore giving it a name

{% assign slug = slug %}

assign slug_depth with a forloop.index

{% assign slug_depth = forloop.index %}

close for

{% endfor %}

obtain sub-directories for every page in website comparing depth and parent of current page to that of every other page in website

{% if slug_depth == page_depth and page_parent == node_parent %}
{{ slug }}
{% endif %}

obtain sub-directories for root (which we skipped early in this script). we can use depth alone to define this.

{% if slug_depth == 1 and page.url == '/' and slug != 'search.json' and slug != 'sitemap.xml' %}
{{{slug}}
{% endif %}

close if and for

{% endif %}
{% endfor %}

altogether:

  {% assign page_depth = page.url | split: '/' | size %}
  {% assign page_parent = page.url | split: '/' | last %}
  {% for node in site.pages offset:1 %}
  {% if node.url == '/' %}
  {{ continue }}
  {% else %}
  {% assign split_path = node.url | split: "/" %}
  {% assign node_last = split_path | last %}
  {% assign node_parent = node.url | remove: node_last | split: '/' | last %}
  {% assign node_url = node.url %}
  {% for slug in split_path offset:1 %}
  {% assign slug = slug %}
  {% assign slug_depth = forloop.index %}
  {% endfor %}
  {% if slug_depth == page_depth and page_parent == node_parent %}
  
{{ slug }}
  {% endif %}
  {% if slug_depth == 1 and page.url == '/' and slug != 'search.json' and   slug != 'sitemap.xml' %}
  
{{{slug}}
  {% endif %}
  {% endif %}
  {% endfor %}