How To Populate The Dropdownlist Using Jquery Ajax In Yii

I’m new to Yii framework and I’m designing a multiselect dropdownlist, where I want to populate the values based on a XML file using jQuery Ajax.

Let me explain abou the scenario succintly, so that I can make it clear for what I want-

  1. I’m using web services to get the XML from a cross domain link, which fetches the values inside XML tags to populate the options inside the dropdownlist of the form (_form.php).

  2. I’m using jQuery eric hynds plugin to use the existing dropdownlist in _form.php to Multiselect dropdownlist.

My Query is - Is it the right way to do it, I tried Yii extension ech-multiselect, but I did not implement it.

  1. How do I populate values to the selection menu using jQuery Ajax in Yii framework.

<?php echo $form->labelEx($model,'selectionList'); ?>

<?php echo $form->dropDownList($model,'selectionList',array('rows'=>6, 'cols'=>50),array('class'=>'multiselect')); ?>

<?php echo $form->error($model,'selectionList'); ?>

Now, how do I populate the array for options in the above selectionlist.