Adding Disqus to a Ghost Blog running a Casper-based theme without editing any files

Adding Disqus to a ghost blog on casper ~ 1.0

I noticed that there weren't any writeups for using code injection to add Disqus comments to a ghost blog. Everything assumes you're comfortable with editing your theme (and thus being responsible for maintaining a fork, urk).

So, I used the steps below to add to Disqus comments to my blog running a [Casper fork](https://github.com/novaugust/novasper). If your theme varies wildly from Casper, you'll be able to get by just by updating the css selectors in the javascript. If all that is a bit much for you, leave a comment and a link to your site and I'll give you what your versino of the code would be.

## Code Injection to the rescue

So! Here's the scoop

1. **Set up your disqus**. You're a grownup, you'll figure it out.
2. Go to your blog admin's **`Code Injection`** section (example.com/ghost/settings/code-injection/).
3. Add this code to the **`Blog Header`** section to style up your disqus. 
  Don't want it getting too wide now, do we?

  ```html
  <style>
      #disqus_thread {
          width: 80%;
          max-width: 710px;
          margin: 3rem auto 0;
      }
  </style>
  ```
4. Add this code to the **`Blog Footer`** section. 

  Make sure to replace the disqusSite value with whatever your disqus subdomain is (for example, mine's `novaugust.disqus.com` so I put `'novaugust'` in there).

  ```html
  <!-- disqus -->
  <script>
      // Only inject comments if you're on a post page.
      var article = $('.post-template main article');
      var disqusSite = 'YOUR-DISQUS-SUBDOMAIN-HERE';  // Yo! You gotta customize this bit to you!
      if (article.length) {
        article.after('<div id="disqus_thread"></div>');
          // this is the code you get from disqus
          (function() {
              var d = document, s = d.createElement('script');
              s.src = '//' + disqusSite + '.disqus.com/embed.js';
              s.setAttribute('data-timestamp', +new Date());
              (d.head || d.body).appendChild(s);
          })();
      }
  </script>
  ```
  
## Caveat

This won't provide the unique-ifying `post.id` to disqus. If that's a concern for you, you'll just have to update your theme.

Thank you! casper 5.7.0 Apply!!!!!!!