Liquid: Can I get a random element from an Array?

Question

I\'m trying to pick a random element from an array -- is this possible using Liquid/Jekyll?

I can create an array -- and access a given index ... but is there a way to \

Answer 1

Without using a plugin (which might be a requirement if you are using github pages for example) and don't want the choice to be set only at build/rebuild time.

This uses collections as it's data source and some feature flags set in the page front matter.

{% if page.announcements %}
    
{% endif %}

I use markdownify to process the content, jsonify to make it JavaScript safe and then append a comma to make my array.

The Javascript then populates one randomly at page load.

Add collection to config.yml

collections:
   announcements:

Add flag to page

---
layout: home
title: 
slider: true
announcements: true    
---

collection content item (test.md)

---    
published: true
---

This is a test post