Snippet to integrate Disqus in your Ghost blog without touching the templates of your theme

embed-disqus-snippet.html

<!-- Put this snippet in your "Blog footer" via Ghost's "Code Injection" -->
<script>
    // Your Disqus name
    var disqusName = 'paulwellnerbou';
    // The element where to append the Disqus discussion container, for Ghost 0.11 and the casper theme this is '.post-content'
    var elementToAppendDisqusContainer = '.post-content';
    var postContent = document.querySelector(elementToAppendDisqusContainer);
    if(postContent !== null) {
        var div = document.createElement('div');
        div.setAttribute('id', 'disqus_thread');
        postContent.append(div);

        var canonical = document.querySelector('link[rel=canonical]').getAttribute('href')
        var identifier = canonical.slice(canonical.slice(0, -1).lastIndexOf('/') + 1, -1);
        var disqus_config = function () {
        this.page.url = canonical;
        this.page.identifier = identifier;
        };
        (function() {
            var d = document, s = d.createElement('script');
            s.src = 'https://' + disqusName + '.disqus.com/embed.js';
            s.setAttribute('data-timestamp', +new Date());
            (d.head || d.body).appendChild(s);
        })();
    }
</script>