gistfile1.php

<?php $this->widget('zii.widgets.grid.CGridView', array(
    'id'=>'question-grid',
    'dataProvider'=>$model->search(),
    'filter'=>$model,
    'columns'=>array(
        'id',
        'question',
        'answer_a',
        'answer_b',
        array(
            'class'=>'CButtonColumn',
            'template' => '{up} {down}',
            'buttons' => array(
                'up' => array(
                    'label' => 'Up',
                    'visible'=>'$row > 0',
                ),
                'down' => array(
                    'label' => 'Down',
                    'visible'=>'$row+1 < '.$model->search()->getPagination()->pageSize,
                ),
            )
        ),
    ),
)); ?>