ウィジットエリアのプルダウン表示方法

echo $this->BcForm->select('test', ['a', 'b', 'c']);

<?php echo $this->BcForm->select('test', ['a', 'b', 'c']); ?>

$this->Blog->getCategories()

 ['a', 'b', 'c']

<?php
if($this->Blog->isSingle()) { //詳細記事の時
    $blog_id = $post['BlogPost']['blog_content_id']; //現在表示記事からブログIDを取得
} else {
    $blog_id = $posts[0]['BlogPost']['blog_content_id']; //記事一覧の１記事目から現在表示中のブログIDを取得
}
$actionUrl = '/blog/blog/get_categories/'.$blog_id.'/';
$data = $this->requestAction($actionUrl);
$categories = $data['categories'];
echo $this->BcForm->select('test', $categories );
?>

<select name="data[test]" id="test">
<option value=""></option>

<option value="title">カテゴリ１</option>
<option value="name">cate1</option>
<option value="id">3</option>
<optgroup label="BlogCategory">
</optgroup></select>

<?php
$category = $this->Blog->getCategory($post,array(false)); echo h($category[‘title’]);
echo $this->BcForm->select('test', $categories );
?>

$categories = $this->Blog->getCategories();

<select name="data[test]" id="test">
<option value=""></option>

<option value="title">プレスリリース</option>
<option value="name">release</option>
<optgroup label="BlogCategory">
</optgroup><optgroup label="1">
</optgroup>
<option value="title">テスト</option>
<option value="name">test</option>
<optgroup label="BlogCategory">
</optgroup>
<optgroup label="2">
</optgroup>
<option value="title">カテゴリ名?</option>
<option value="name">categoryname</option>
<option value="id">3</option>
<optgroup label="BlogCategory">
</optgroup>
</select>

$categories = $this->Blog->getCategories(['blogContentId' => $this->request->params['Content']['entity_id']]);
$categoryList = [];
foreach ($categories as $category) {
	$categoryList['http://xxxxx/works/archives/category/' . $category['BlogCategory']['name']] = $category['BlogCategory']['title'];
}
echo $this->BcForm->select('test', $categoryList);