[Ask] Crosstab Cgridview

<?php 
$sum=Yii::app()->db->createCommand('SELECT SUM(penyusutan) FROM view_penyusutan_gol_per_tahun')->queryScalar();

$this->widget('zii.widgets.grid.CGridView', array(
	'id'=>'twilayah-grid',
	'dataProvider'=>$model->search(),
	//'summaryText'=>'Jumlah Total : '. $sum,
	'filter'=>$model,
	'columns'=>array(
		'thn_ang',
		'kd_gol',
		'ur_gol',
		//'total',
		//'footer'=>'Total: '.number_format($sum), 
		array(
			'name'=>'penyusutan',
			'value'=>'number_format($data->penyusutan,0,"",".")',
			'htmlOptions'=>array('style'=>'text-align:right;'),
			'footer'=>number_format($sum,0,"","."), 
			'footerHtmlOptions'=>array('style'=>'text-align:right;'),
			'headerHtmlOptions'=>array('style'=>'text-align:right;'),
		),
		/*array(
			'class'=>'CButtonColumn',
		),*/
	),
)); 
?>