Display more column in dropdown list


I have a simple but big problem :)

I would like show two columns value as my label in a select.

This is my current code:


echo $form->dropDownList(

 &#036;model, 'client_id',


      Clienti::model()-&gt;findAll(), 'id', 'name'),

      array( 'class' =&gt; 'form-control select2', 'prompt' =&gt; 'Select tour...' )



Instead of the name only I would like name and surname. How can I do? Thanks :)

Some Yii 1.1 solutions here.