ARCates::getCates PHP Method

    public static function getCates($pid = 0, $level = self::LEVEL_ONE)
    {
        $query = new Query(Yii::app()->db);
        $query->from('groupon_cates');
        $query->select('id,name');
        $query->andWhere('pid=:pid AND level=:level', array(':pid' => $pid, ':level' => $level));
        $cates = $query->queryAll();
        if (!empty($cates)) {
            $cates = A::map($cates, 'id', 'name');
        }
        return $cates;
    }

<?php

echo $form->dropDownListRow($model, 'cate_1_id', ARCates::getCates(), array('class' => 'span2', 'prompt' => '请选择', 'ajax' => array('type' => 'POST', 'url' => $this->createUrl('ajax/cate'), 'success' => 'function(data){
            $("#ARGroupon_cate_2_id").html(data);
            $("#ARGroupon_cate_3_id").html("<option value=\\"\\">请选择</option>");
        }', 'data' => array(Yii::app()->request->csrfTokenName => Yii::app()->request->getCsrfToken(), 'pid' => 'js:$("#ARGroupon_cate_1_id").val()', 'level' => ARCates::LEVEL_TWO))));
?>

<?php 
echo $form->dropDownListRow($model, 'cate_2_id', $model->cate_1_id > 0 ? ARCates::getCates($model->cate_1_id, ARCates::LEVEL_TWO) : array(), array('class' => 'span2', 'prompt' => '请选择', 'ajax' => array('type' => 'POST', 'url' => $this->createUrl('ajax/cate'), 'update' => '#ARGroupon_cate_3_id', 'data' => array(Yii::app()->request->csrfTokenName => Yii::app()->request->getCsrfToken(), 'pid' => 'js:$("#ARGroupon_cate_2_id").val()', 'level' => ARCates::LEVEL_THREE))));
?>

<?php 
echo $form->dropDownListRow($model, 'cate_3_id', $model->cate_2_id > 0 ? ARCates::getCates($model->cate_2_id, ARCates::LEVEL_THREE) : array(), array('class' => 'span2', 'prompt' => '请选择'));
?>