Jekyll/Liquid Templating: How to group blog posts by year?

Question

I\'m rewriting my blog to use Jekyll. Jekyll uses the Liquid templating language so it makes it a little more difficult to learn how to customize.

I\'d like to group

Answer 1

Some solutions above are very complex but then as @Trevor pointed out that we can levarage Jekyll's group_by_exp filter. Also I liked the solution but what I needed was grouped by Year and then inside that list grouped by Month. So, I tweaked it a little bit.

{% assign postsByYear = site.posts | group_by_exp:"post", "post.date | date: '%Y'" %}
    {% for year in postsByYear %}
      
{{ year.name }}
      {% assign postsByMonth = year.items | group_by_exp:"post", "post.date | date: '%B'" %}

      {% for month in postsByMonth %}
        
{{ month.name }}
        

          {% for post in month.items %}
            
{{ post.title }}-{{ post.date }}
          {% endfor %}
        

      {% endfor %}
    {% endfor %}