Zend2 Form - set attributes to options in select element - php

Question

I wonder how to add some attributes to select's options in Zend 2. My form element looks like this:
$this->add(array(
'type' => 'Zend\Form\Element\Select',
'name' => 'brand_name',
'options' => array(
'label' => 'Choose brand',
'value_options' => $this->getBrands(),
),
));
So it's populate select looking similar to this:
<select name="brand_name"><option value="1">aaaa</option></select>
But I want to achieve something like this:
<select name="brand_name"><option value="1" class="test">aaaa</option></select>
And the classes should be different, depends on particular option. Is it possible? Why am I trying this? I need to add jquery plugin - chained which needs classes for options.

Answer 1

I've found a solution, array of parent select value_options should look like this:
foreach ($data as $item) {
$models[] = array(
'label' => $item->model_name,
'attributes' => array('class' => $item->id_brand_list),
'value' => $item->id);
}

Answer 2

If your data were array that you preferred getting from sql or db, you can code like:
public function getOptionsForDataSelect()
{
$dbAdapter = $this->_adapter;
$sql = "SELECT * FROM db_name ORDER BY db_name ASC";
$statement = $dbAdapter->query($sql);
$result = $statement->execute();
$selectData = array();
foreach ($result as $res) {
$selectData[] = array(
'label' => $res['label_data'],
'attributes' => array(
'data-key' => $res['data_id']
),
'value' => $res['value_id']
);
// $selectData[$res['id']] = $res['name'];
}
return $selectData;
}