title: respond_with - How to respond with a text
body: <p>I'm using the respond_to and respond_with in a rails app, but in one use case I need to respond with just a text for just one of the resource formats (:json)... But I can't find how to do this... </p>
  
  <p>I want something like this (I know this doesn't work)</p>
  
  <pre><code>def create
      ...
      respond_with(:json, render :text =&gt; "Successfully Done!")
  end
  </code></pre>
  
  <p>Any Idea??</p>
  
  <p>Thanks!</p>