title: CakePHP - save multiple HABTM data w/ dropdowns in same form
body: <p>When a user adds an Event, I want them to be able to choose which band(s) are playing at that event.  I already have my Events table and my Bands table each with HABTM model associations to the other.</p>
  
  <p>On my "add event" page, I have a dropdown displaying the bands, so they can choose one.</p>
  
  <pre><code>echo $this-&gt;Form-&gt;input('Band', array('multiple'=&gt;false, 'empty'=&gt;true));
  </code></pre>
  
  <p>I would like to have a "add another band" button, and when clicked, it adds another dropdown.  I think I already know how to do the dynamic field-adding thing - but - even when I try this like this: (just to see if I can get it to work)</p>
  
  <pre><code>echo $this-&gt;Form-&gt;input('Band', array('multiple'=&gt;false, 'empty'=&gt;true));
  echo $this-&gt;Form-&gt;input('Band', array('multiple'=&gt;false, 'empty'=&gt;true));
  echo $this-&gt;Form-&gt;input('Band', array('multiple'=&gt;false, 'empty'=&gt;true));
  </code></pre>
  
  <p>It doesn't save three rows in the bands_events HABTM table - it just saves one.  And when I try to edit the event, all three select dropdowns default-select one of previously selected bands, but not all (obviously it can't, since it didn't save the data).</p>
  
  <p>Any thoughts on how I can have multiple dropdowns to add more than one band to an event?  There are way too many bands to have checkboxes - and I hate the multi-select boxes - too difficult for most users.</p>
  
  <p>Any help is GREATLY appreciated.</p>