class CountryCityCombox extends RXWidget {

	public $provinceId = 2;

	public $cityId = 3687;

	public $regionId = 64;

        public $level = 3;  //限定联动层级 为2说明是2级联动 

	public function init() {

		$this->provinceId = intval ( $this->provinceId );

		$this->cityId = intval ( $this->cityId );

		$this->regionId = intval ( $this->regionId );

                $this->level = intval( $this->level );

	}

	public function run() {

		$province = Area::model ()->province()->findAll ();

		$province = CHtml::listData ( $province, 'id', 'name' );

		$city = array ();

		if($this->provinceId) {

			// city record

			$cri = new CDbCriteria ();

			$cri->condition = 'pid=:pid';

			$cri->params = array (

                ':pid' => $this->provinceId

			);

			$city = Area::model ()->findAll ( $cri );

			$city = CHtml::listData ( $city, 'id', 'name' );

		}

		$region = array ();

		if($this->cityId) {

			//init region

			// city record

			$cri = new CDbCriteria ();

			$cri->condition = 'pid=:pid';

			$cri->params = array (

                　　　　　　':pid' => $this->cityId

			);

			$region = Area::model ()->findAll ( $cri );

			$region = CHtml::listData ( $region, 'id', 'name' );

		}

                $views = array();

                $views['ccc_province'] = array (0 => '请选择省') + $province;

                $views['ccc_provinceId'] = $this->provinceId;

                $views['ccc_city'] = array (0 => '选择城市') + $city;

                $views['ccc_cityId'] = $this->cityId ;

                if ($this->level != 2) {

                    $views['ccc_region'] = array (0 => '选择区') + $region;

                    $views['ccc_regionId'] = $this->regionId ;

                }

                $views['level'] = $this->level;

		$this->render ( 'countrycitycombox', $views);

	}

}

<label>选择地区：</label>

<?php

$t = time () . uniqid ();

$htmlOptions = array (

    'class' => 'combox',

    'ref' => 'combox_city' . $t,

    'refUrl' => 'area/get?id={value}',

    'id' => 'provinceId' . $t

);

echo CHtml::DropDownList ( 'provinceId', $ccc_provinceId, $ccc_province, $htmlOptions );

?>

<?php

$htmlOptions = array (

    'class' => 'combox',

    'ref' => 'combox_region' . $t,

    'refUrl' => 'area/get?id={value}',

    'id' => 'combox_city' . $t

);

echo CHtml::DropDownList ( 'cityId', $ccc_cityId, $ccc_city, $htmlOptions );

$htmlOptions = array (

    'class' => 'combox',

    'id' => 'combox_region' . $t

);

if ($level != 2) {

    echo CHtml::DropDownList ( 'regionId', $ccc_regionId, $ccc_region, $htmlOptions );

}

 $widget=$this->Widget('CountryCityCombox',array(

        'level'=>2

  ));

 $widget=$this->Widget('CountryCityCombox');