title: Rails 3 params unwanted wrapping
body: <p>I'm posting some JSON like the JSON form of <code>{:name =&gt; "hello"}</code> to my Rails 3 controller ExampleController.</p>
  
  <p>Instead of getting <code>params</code> like:</p>
  
  <pre><code>{:name =&gt; "hello"}
  </code></pre>
  
  <p>I'm getting:</p>
  
  <pre><code>{:name =&gt; "hello", :controller =&gt; "example", :action =&gt; "index", :example =&gt; {:name =&gt; "hello"}
  </code></pre>
  
  <p>(Yes the JSON data appears twice! and action and controller are added)</p>
  
  <p>Any idea why ?</p>