make magento custom attribute filterable - php

Question

Is there a way to make a custom magento product attribute filterable through a setup file and resource file?
I can create the attribute, I can even set the group it goes into but w/out manually going into the admin and adjusting the filterable option on the attribute, I can't get it to be set to filterable (especially filterable - I've tried w/ true/false and 0,1,2). I've tried adjust about every option that makes sense.
ie:
app/code/local/Company/Module/Model/Resource/Eav/Mysql4/Setup.php
public function getDefaultEntities()
{
return array(
'catalog_product' => array(
'entity_model' => 'catalog/product',
'attribute_model' => 'catalog/resource_eav_attribute',
'table' => 'catalog/product',
'additional_attribute_table' => 'catalog/eav_attribute',
'entity_attribute_collection' => 'catalog/product_attribute
'attributes' => array(
'attribute_name' => array(
'group' => 'Attribute Set Group',
'type' => 'int',
'backend' => '',
'frontend' => '',
'label' => 'Attribute Label',
'input' => 'select',
'class' => '',
'source' => 'eav/entity_attribu
'global' => Mage_Catalog_Model_
'visible' => true,
'required' => false,
'user_defined' => true,
'default' => false,
'searchable' => true,
'filterable' => 1,
'comparable' => false,
'visible_on_front' => true,
'visible_in_advanced_search' => true,
'used_in_product_listing' => true,
'used_for_sort_by' => true,
'unique' => false,
),
),
),
);
}
app/code/local/Company/Module/Model/sql/module_setup/mysql4-install-0.1.0.php
$this->installEntities();

Answer 1

You can add an attribute in the following way:
module_name\sql\machinesearch_setup
Create one SQL setup file like this in your module.
<?php
$installer = $this;
$data= array (
'attribute_set' => 'Default',
'global' => Mage_Catalog_Model_Resource_Eav_Attribute::SCOPE_STORE,
'label' => 'Year',
'input' => 'multiselect',
'type' => 'text',
'default_value_text' => 'varchar',
'unique' => false,
'required' => false,
'visible' => true,
'searchable'=> true,
'visible_in_advanced_search' => true,
'html_allowed_on_front' => true,
'comparable' => false,
'backend_type' => 'varchar',
'backend' => 'eav/entity_attribute_backend_array',
'group' => 'General',
'user_defined' => true,
);
$installer->addAttribute('catalog_product','mmy_year',$data);
$data= array
(
'attribute_set' => 'Default',
'global' => Mage_Catalog_Model_Resource_Eav_Attribute::SCOPE_STORE,
'label' => 'Make',
'input' => 'multiselect',
'type' => 'text',
'default_value_text' => 'varchar',
'unique'=> false,
'required'=> false,
'visible' => true,
'searchable'=> true,
'visible_in_advanced_search'=> true,
'html_allowed_on_front' => true,
'comparable'=> false,
'backend_type' => 'varchar',
'backend'=> 'eav/entity_attribute_backend_array',
'group' => 'General',
'user_defined'=> true,
);
$installer->addAttribute('catalog_product','mmy_make',$data);
$data= array (
'attribute_set' => 'Default',
'global' => Mage_Catalog_Model_Resource_Eav_Attribute::SCOPE_STORE,
'label' => 'Model',
'input' => 'multiselect',
'type' => 'text',
'default_value_text' => 'varchar',
'unique' => false,
'required' => false,
'visible' => true,
'searchable' => true,
'visible_in_advanced_search' => true,
'html_allowed_on_front' => true,
'comparable' => false,
'backend_type' => 'varchar',
'backend' => 'eav/entity_attribute_backend_array',
'group' => 'General',
'user_defined' => true,
);
$installer->addAttribute('catalog_product','mmy_model',$data);
$installer->endSetup();
?>