title: Ruby on Rails: Can you put Ruby code in a YAML config file?
body: <p>I would like to do something like this in my amazon_s3.yml config file:</p>
  
  <pre><code>access_key_id: ENV['S3_KEY']
  secret_access_key: ENV['S3_SECRET']
  </code></pre>
  
  <p>...but I know this isn't working. Not sure if it is even possible, but can you put Ruby code in a YAML file?</p>