How do I change the group of a custom product attribute?

Question

I've created several custom product attributes like this:

$installer->addAttribute('catalog_product', $data['name'], array(
    'group'             => 'General',
    'type'              => $data['type'],
    'backend'           => '',
    'frontend'          => $data['front_end'],
    'label'             => $data['label'],
    'input'             => $data['input'],
    'source'            => 'eav/entity_attribute_source_table',
    'global'            => Mage_Catalog_Model_Resource_Eav_Attribute::SCOPE_STORE,
    'visible'           => true,
    ));

Because I'm creating several attributes, the above code runs in a loop (hence the data variable). I've copied the relevant portion (I think); there's several more fields being set, but I've excluded them for brevity.

I'd like to change their group to a custom one I've created in an upgrade script. I'm able to set this correctly if I remove the module and recreate it. However, I would like to be able to change the group through an upgrade script since the code has already been deployed.

I've tried this with no luck:

$installer->updateAttribute('catalog_product', $data['name'], array(
    'group' => 'Custom Product Tab'
));

How can I modify a product attribute's group in an upgrade script?

Answer 1

See my code, it works perfectly:

/* @var $installer Mage_Catalog_Model_Resource_Eav_Mysql4_Setup */

$installer = $this;
$installer->startSetup();
$attribute = $installer->getAttribute(Mage_Catalog_Model_Product::ENTITY, 'some_attribute');
$installer->addAttributeToGroup(
    Mage_Catalog_Model_Product::ENTITY, //catalog_product
    $installer->getDefaultAttributeSetId(Mage_Catalog_Model_Product::ENTITY), //Attribute Set Id
    'General', //Group Name
    $attribute['attribute_id'], //attribute id
    10//sort order
);
$installer->endSetup();