Exemplo de customização de filtros no CGridView

gistfile1.php

<?php $this->widget('zii.widgets.grid.CGridView', array(
	'columns'=>array(
            array(
                'name' => 'pesquisa',
                'value' => '$data->pesquisa',
                'header' => 'Termo',
            ),
            array(
                'name' => 'data_cadastro',
                'value' => 'Yii::app()->dateFormatter->formatDatetime(strtotime($data->data_cadastro), "short", "short")',
                'filter' => CHtml::activeTextField($pesquisa, 'data_cadastro'),
            ),
            array(
                'name' => 'id_status',
                'value' => '$data->status->status',
                'filter' => CHtml::activeDropDownList($pesquisa, 'id_status', CHtml::listData($status, 'id', 'status'), array('prompt'=>'')),
            ),
            
	),
)); ?>