How to setup Jekyll related posts using tags.

This is a Jekyll custom plugin. Documentation here.

Update your Gemfile:

gem 'jekyll-tagging-related_posts'

Run bundle

$ bundle

Output:

Fetching nuggets 1.6.0
Installing nuggets 1.6.0
Fetching jekyll-tagging 1.1.0
Installing jekyll-tagging 1.1.0
Fetching jekyll-tagging-related_posts 1.1.0 
Installing jekyll-tagging-related_posts 1.1.0

Post-install message from nuggets:

nuggets-1.6.0 [2018-07-12]:

* Added <tt>JSON.*_{multi,canonical}</tt>.

Post-install message from jekyll-tagging:

jekyll-tagging-1.1.0 [2017-03-07]:

* Added ability to append extra data to all tag pages. (tfe)
* Provides compatibility to the current jekyll (3.4.1).
* A few fixes. (felipe)
* Some documentation improvements. (wsmoak, jonathanpberger)
* Prooves who is the worst open source maintainer. (pattex ^__^)

Update _config.yml and _config-deploy.yml:

plugins:
  - jekyll/tagging
  - jekyll-tagging-related_posts

Create a _layouts directory in blog root:

$ mkdir _layouts

Copy the post.html layout from the minima theme Gem to this new directory.

$ cp /home/tom/.rvm/gems/[email protected]/gems/minima-2.5.1/_layouts/post.html _layouts/

Add this code to post.html after the blog post content and before disqus code.

{% if site.related_posts.size >= 1 %}
<div>
  <h3>Related Posts</h3>
  <ul>
  {% for related_post in site.related_posts limit: 5 %}
    <li><a href="{{ related_post.url }}">{{ related_post.title }}</a></li>
  {% endfor %}
  </ul>
</div>
{% endif %}

Setup: Jekyll Custom Plugin Deploy