title: Retrieving g:select value from within gsp - No form
body: <p>How does one pass the value of the g:select box in a link action:</p>
  
  <pre><code>&lt;g:select name="sel.n" from="${personList}" value="" /&gt;
  &lt;g:link action="addValue" params="${[personID: personInstance.id, selectionVal: sel.n.value]}"&gt;Add&lt;/g:link&gt;
  </code></pre>
  
  <p>How do I retrieve the value of the selection box sel.n to pass in that action link?</p>
  
  <p>This is NOT a form.</p>