Yii loop through Parent Model's Id

$categoryModel = Category::model();
$categoryData = $categoryModel->findAll( array('order'=>'category_name',     
      'condition'=>'super_category_id=:supcatid', 
      'params'=>array(':supcatid'=>$mySuperCategoryId)
));


foreach($categoryData as $categoryDataValue)
{ 
echo $categoryDataValue->category_id;
$productModel = Product::model();
$productData = $productModel->findAll( array('order'=>'product_name', 
      'condition'=>'product_category_id=:catid', 
      'params'=>array(':catid'=>$categoryDataValue->category_id)
));
}//end of foreach