默认情况下CGridView会生成一个文本框，但是这并不友好，用户往往希望知道有什么可选的，特别是数据库里存的是数字id的时候，我们希望将数字转换为可读的文本，这时候只需要修改一下表头的"filter"属性就行了，比如:
widget('zii.widget
s.grid.CGridView',array(
'id'=>'busi
ness-grid',
'dataProvider'=>$dataProvider,
'filter'=> Busi
ness::model(),
'
columns'=>array(
'busi
ness_id',
'name',
'package_id'=> array(
'name' => 'package_id',
'value' => '$data->package->package_
title',
'filter'=> CHtml::listData(Packages::model()->findAll(array('order'=>'package_
title')),'package_id','package_
title')
),
'
user_id'=>array(
'name' => '
user_id',
'value' => '$data->user->name',
'filter'=> CHtml::listData(Users::model()->findAll(array('order'=>'firstname')),'id','name')
),
'categories' => array(
'name' => 'categories',
'value' => '$data->returnAllCategories(",",
fals
E);',
'filter'=> CHtml::listData(Categories::model()->findAll(array('order'=>'category')),'cat_id','category')
),
'keywords' => array(
'header' => 'Keywords',
'value' => '$data->returnAllKeywords(",
),
'links'=>array(
'header'=>'Manage',
'type'=>'raw',
'value'=>'CHtml::link(CHtml::image(Yii::app()->
request->baseUr
l."/images/admin/approve.png","Approve"),array("approve","id"=>$data->busi
ness_id,"item"=>"busi
ness"),array("class"=>"approve-link","
title"=>"Approve Busi
ness"))." ".
CHtml::link(CHtml::image(Yii::app()->
request->baseUr
l."/images/admin/re
ject.png","Re
ject"),array("re
ject",array("class"=>"re
ject-link","
title"=>"Re
ject Busi
ness"))',
)
);array(
'name' => 'type',
'filter'=>$model->getTypeOptions(),
),
'type'=>array(
'name' => 'type',
