How to pass variable in the popup link on CButtonColumn
array(
'class'=>'CButtonColumn',
'header' => 'View',
'template'=>'{Details}',
'buttons'=>array(
'Details' => array(
'label'=>'Details',
'click'=>//onclick I need one popup window here with the link and value("/CRM/default/activityListDetails", array("activity_id"=>$data[\'activity_id\'],"client_id"=>$data[\'client_id\'] ))}',
),
),
),