public static function getOrCreate($categoryName)
{
$categoryDAO = new Category();
$category = $categoryDAO->findFirst("categoryName='{$categoryName}'");
$pinyin = new Pinyin();
if (!$category) {
$category = new Category();
$category->categoryName = $categoryName;
$category->initial = substr($pinyin->transformUcwords($category->categoryName), 0, 1);
$category->save();
}
return $category;
}
