title: How to convert module class name to symbol in rails
body: <p>In a rails initializer file, there is a line for configuring activity objects that accepts symbols like so:</p>
  
  <pre><code>config.objects += [ :room, :hotel, ..etc ]
  </code></pre>
  
  <p>These symbols represent classes that I want configured.</p>
  
  <p>My problem is that i'm using a rails engine which defines a 'Blogit::Post' module class which I want to configure. How do I add this to the config array as a symbol?</p>