title: CodeIgniter - Repopulating an invalid form w/ redirect
body: <p>I'm using the <a href="http://en.wikipedia.org/wiki/Post/Redirect/Get" rel="nofollow">Post-Redirect-Get</a> pattern to avoid problems with refreshing the page after a POST submit. The redirect clears any sent POST data, meaning that I cannot populate the fields again with <code>set_value()</code> and related functions.</p>
  
  <p>To make this clearer, here is how it works.</p>
  
  <ol>
  <li>Client submits a POST with invalid data.</li>
  <li>A 303 redirect header is sent back.</li>
  <li>Client does a GET on the header location but POST data is gone, meaning the form cannot be repopulated.</li>
  </ol>
  
  <p>Help pleeeease? :)</p>