Add the attribute using the install script

Add the magento cutsom category attribute using the install script

<?php
$this->startSetup();
$this->addAttribute(Mage_Catalog_Model_Category::ENTITY, 'custom_dropdown', array(
    'group'         => 'General Information',
    'input'         => 'select',
    'type'          => 'text',
    'label'         => 'Custom Dropdown',
    'backend'       => '',
    'visible'       => true,
    'required'      => false,
    'visible_on_front' => true,
    'global'        => Mage_Catalog_Model_Resource_Eav_Attribute::SCOPE_GLOBAL,
    'source' => 'customfeaturedattribute/source_custom',
));
 
$this->endSetup();

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