'log' => array(
    'class' => 'CLogRouter',
    'routes' => array(
        array(
            'class' => 'CFileLogRoute',
            'levels' => 'error, warning',
        ),
        array(
            'class' => 'CProfileLogRoute'
        )
    ),
),
 
'urlManager' => array(
    'urlFormat' => 'path',
    'showScriptName' => false,
    'rules' => array()
),
 
'user' => array(
    // enable cookie-based authentication
    'allowAutoLogin' => true,
),
 
'db' => array(
    'connectionString' => 'mysql:host=localhost;dbname=dbname',
    'username' => 'root',
    'password' => 'root',
    'charset' => 'utf8',
    'enableProfiling' => true
)

Yii::import('application.vendors.*');
require_once 'Zend/Loader/Autoloader.php';
Yii::registerAutoloader(array("Zend_Loader_Autoloader", "autoload"));

<div class="simple">
    <?php echo CHtml::activeLabelEx($model,'categoryId'); ?>
    <?php echo CHtml::activeDropDownList($model,'categoryId', Item::getSectionCategoryOptions()); ?>
</div>

public static function getSectionCategoryOptions()
{
    $sections = Section::model()->findAll();
 
    $tmp = array();
    foreach ($sections as $section) {
        $tmp[$section->name] = CHtml::listData($section->categories, 'id', 'name');
    }
 
    return $tmp;
}

<div class="simple">
    <?php echo CHtml::activeLabelEx($model,'categoryId'); ?>
    <?php echo CHtml::activeDropDownList($model,'categoryId', CHtml::listData(Category::model()->with('section')->findAll(), 'id', 'name', 'section.name')); ?>
</div>