Accessing _data in Jekyll (loop in loop)

jekyll, liquid

Solution

YAML:

- title: "Projects"
  subcategories:
    - title: "project-sub1"
      items:
        - title: "project-sub1-item1"
          href: "#"
        - title: "project-sub1-item2"
          href: "#"
    - title: "project-sub2"
      items:
        - title: "project-sub2-item1"
          href: "#"
        - title: "project-sub2-item2"
          href: "#"

- title: "Support"
  subcategories:
   - title: "support-sub1"
     items:
      - title: "support-sub1-item1"
        href: "#"
      - title: "support-sub1-item2"
        href: "#"

Nested loops:

{% for entry in site.data.entries %}
  <h2>{{ entry.title }}</h2>
  {% for subcategory in entry.subcategories %}
    <h3>{{ subcategory.title }}</h3>
    <ul>
    {% for item in subcategory.items %}
      <li><a href="{{ item.href }}">{{ item.title }}</a></li>
    {% endfor %}
    </ul>
  {% endfor %}
{% endfor %}

Output:

<h2>Projects</h3>

  <h3>project-sub1</h3>
  <ul>
    <li><a href="#">project-sub1-item1</a></li>
    <li><a href="#">project-sub1-item2</a></li>
  </ul>

  <h3>project-sub2</h3>
  <ul>
    <li><a href="#">project-sub2-item1</a></li>
    <li><a href="#">project-sub2-item2</a></li>
  </ul>

<h2>Support</h3>

  <h3>support-sub1</h3>
  <ul>
    <li><a href="#">support-sub1-item1</a></li>
    <li><a href="#">support-sub1-item2</a></li>
  </ul>

Problem

Given this YAML: ``` - maincategory: title: "Projects" subcategory: title: "General" item: title: "Alpha" item: title: "Beta" - maincategory: title: "Support" subcategory: title: "General" item: title: "Something" item: title: "Else" ``` How would one iterate over this data if the Jekyll _data file is called entries.yml? So far I've gotten here but I'm not sure whether I should keep referencing the site.data oject in sub-loops. Also not sure whether this is even possible. ``` {% for entry in site.data.entries %} <h2>{{ entry.maincategory.title }}</h3> {% for subcategory in site.data.entries.maincategories %} <h3>{{ entry.maincategory.subcategory.title }}</h3> <ul> {% for item in site.data.entries.maincategory.subcategories %} <li><a href="{{ item.href }}">{{ item.title }}</a></li> {% endfor %} </ul> {% endfor %} {% endfor %} ``` To be clear, this is where I want to end up (output wise): ``` <!-- Loop over every main category --> <h2>Main category title</h2> <!-- Loop over every sub category within main category --> <h3>Subcategory title</h3> <ul> <!-- Loop over every item in this subcategory --> <li><a href="#">Item title</a> </li> ```

Original source