To enable Disqus with Timber Starter Theme in WordPress, install and enable the Disqus Commenting System plugin and add this simple line of code in the single.twig file:

{{ function('comments_template') }}

A pretty straightforward and simple answer. This is Timber’s way of  bringing in WordPress functionality. According to Timber WP Integration page, this can only work in a single.twig file and it – unfortunately – can’t work in loop.

Maybe WordPress’s default comment system is desirable. With Timber, you can customize the comment section anyway you want:

single.twig

{# single.twig file #}
{{ comment_form }}

{% for cmt in post.get_comments() %}
   {% include "comment.twig" with {comment:cmt} %}
{% endfor %}

comment.twig

{# comment.twig #}

<div class="blog-comment {{comment.comment_type}}" id="blog-comment-{{comment.ID}}">
   <h5 class="comment-author">{{comment.author.name}} says</h5>
   <div class="comment-content">{{comment.comment_content|wpautop}}</div>
</div>

To disable comments in wordpress completely, there are a couple of lines of code you can insert into your functions.php file.

Resources:

• Timber issue: Disqus
• Timber: comment.twig
• Timber: single.twig
• Timber Starter Theme