Using github pages environment variables

05 March 2014

This method is now outdated. Github Pages now exposes the site.github namespace

I use jekyll with github pages to build this blog. I also use disqus for comments. You just have to add a code snippet into the page. Problem is when developing with jekyll I usually like to test how things look locally and then push the site to github pages. Which means whenever I look at a blog post I haven’t pushed, Disqus will create a thread like localhost:4000/something.html in addition to the intended one morenoh149.github.io/something.html. I asked around and found a jekyll plugin for environment variables. But github pages disables plugins. So I dug through the site variable on both production and github pages and found github pages sets GH_ENV which I haven’t seen documented anywhere. Now I simply do

{% if site.GH_ENV == 'gh_pages' %}
  < disqus snippet >
{% endif %}

to get the disqus thread generated only if the post is being viewed on github pages.


If you need help solving your business problems with software read how to hire me.


comments powered by Disqus