Confused with Populating Select field - cakephp

Question

I currently have this:
Hotels Controller
class HotelsController extends AppController {
var $name = 'Hotels';
function admin_add() {
$this->set('hotel_categories', $this->Hotel->HotelCategory->find('list'));
if ( ! empty($this->data)) {
$this->data['Page']['title'] = $this->data['Hotel']['title'];
$this->data['Page']['layout'] = 'index';
if ($this->Hotel->saveAll($this->data)) {
$this->Session->setFlash('Your hotel has been saved', 'flash_good');
$this->redirect(array('action' => 'admin_add'));
}
}
}
HotelCategory Model
class HotelCategory extends AppModel {
var $name = 'HotelCategory';
var $hasAndBelongsToMany = array(
'Hotel' => array(
'className' => 'Hotel'
)
);
Hotel Model
class Hotel extends AppModel {
var $name = 'Hotel';
var $hasAndBelongsToMany = array(
'HotelCategory' => array(
'className' => 'HotelCategory'
)
);
View
<div id="main">
<h2>Add Hotel</h2>
<?php echo $this->Session->flash();?>
<div>
<?php
debug($hotel_categories);
echo $this->Form->create('Hotel');
echo $this->Form->input('Hotel.title');
echo $this->Form->input('HotelCategory', array('options' => 'select', 'multiple' => 'checkbox'));
echo $this->Form->input('Hotel.body', array('rows' => '3'));
echo $this->Form->input('Page.meta_keywords');
echo $this->Form->input('Page.meta_description');
echo $this->Form->end('Save Hotel');
?>
</div>
<!-- main ends -->
</div>
I can confirm that when I debug($hotel_categories); that there are values.
The problem I am having is that the $this->Form->input('HotelCategory', array('options' => 'select', 'multiple' => 'checkbox')) doesn't produce any options.

Answer 1

That should be:
echo $this->Form->input('HotelCategory', array(
'type' => 'select',
'multiple' => 'checkbox',
'options'=>$hotel_categories));

Answer 2

try explicitly setting the options list in the view
<?php echo $this->Form->input('HotelCategory', array(
'type'=>'select',
'options' => $hotel_categories,
'multiple' => true)); ?>