Doctrine 2 customize ObjectMultiCheckbox values - php

Question

How can I custom values with DoctrineModule\Form\Element\ObjectMultiCheckbox?
I used Zend\Form\Element\MultiCheckbox and I set values like this:
$this->add(array(
'type' => 'Zend\Form\Element\MultiCheckbox',
'name' => 'countries',
'options' => array(
'label' => 'Select countries',
'value_options' => array(
'value' => 1,
'label' => 'United Kingdom',
'continent' => 'Europe'
)
)
))
But now I need to use Doctrine 2 Multicheckbox and I need to set custom value options. How can i do this?
I have currently only this:
$this->add(array(
'type' => 'DoctrineModule\Form\Element\ObjectMultiCheckbox',
'name' => 'countries',
'options' => array(
'object_manager' => $this->em,
'target_class' => 'Module\Entity\Country'
)
));
I need this for custom view render. I want to show countries like this:
Europe
- Sweden
- United Kingdom
- and others...
America
- Canada
- United States
- other countries...

Answer 1

SOLVED!
I created a new form element:
ObjectMultiCheckbox:
namespace Application\Form\Element;
use Zend\Form\Element\MultiCheckbox;
use Zend\Stdlib\ArrayUtils;
class ObjectMultiCheckbox extends MultiCheckbox
{
public function setValue($value)
{
if ($value instanceof \Traversable)
{
$value = ArrayUtils::iteratorToArray($value);
foreach ($value as $key => $row)
{
$values[] = $row->getId();
}
return parent::setValue($values);
}
elseif ($value == null)
{
return parent::setValue(array());
}
elseif (!is_array($value))
{
return parent::setValue((array)$value);
}
}
}
It's not really pretty, but it handle object to the form as DoctrineModule\Form\Element\ObjectMultiCheckbox.
My entity which using this code have always identifier 'id' so I can use static code as like this: $row->getId(); It's ugly, but it works!