Hoge.php

<?php
class Hoge extends CActiveRecord
{
    ...
    /**
     * @see CActiveRecord::scopes()
     */
    public function scopes()
    {
        return array(
            'a' => array(
                'condition' => 't.user_id = :user_id',
                'params' => array(':user_id' => Yii::app()->user->id),
            ),
            'b' => array(
                'select' => 't.fuga, t.piyo',
                'order' => 't.id DESC',
            ),
        );
    }
    
    /**
     * すべて取得
     * @return array
     */
    public function getAll()
    {
        $c = new CDbCriteria();

        $count = $this->a()->count($c);
        $pages = new CPagination($count);
        $pages->pageSize = 30;
        $pages->applyLimit($c);
        
        return array(
            $pages,
            $this->a()->b()->findAll($c),
        );
    }
}