get only available simple products of configurable product - php

Question

I am using below piece of code
$configurable= Mage::getModel('catalog/product_type_configurable')->setProduct($_product);
$simpleCollection = $configurable->getUsedProductCollection()->addAttributeToSelect('*')->addFilterByRequiredOptions();
$productAttributeOptions = $_product->getTypeInstance(true)->getConfigurableAttributesAsArray($_product);
$attributeOptions = array();
foreach ($productAttributeOptions as $productAttribute) {
foreach ($productAttribute['values'] as $attribute) {
$attributeOptions[$productAttribute['label']][] =
array('id' => $attribute['value_index'],
'label' => $attribute['label'],
'mainId' => $productAttribute['attribute_id'] );
}
}
return $attributeOptions;
but it gives me list of all simple product even those are not available in stock.
I just want list of simple product of a configurable product those are in stock.
How can i get only in stock products of a configurable product

Answer 1

You can check product stock status 0- not in stock or 1 - in stock
$configurable= Mage::getModel('catalog/product_type_configurable')->setProduct($_product);
$simpleCollection = $configurable->getUsedProductCollection()->addAttributeToSelect('*')->addFilterByRequiredOptions();
/* -------- Add this ------- */
$simpleCollection->getSelect()->join('cataloginventory_stock_status', 'cataloginventory_stock_status.product_id = e.entity_id', array('stock_status'));
$simpleCollection->getSelect()->where("`cataloginventory_stock_status`.`stock_status` = 1");
$productAttributeOptions = $_product->getTypeInstance(true)->getConfigurableAttributesAsArray($_product);
$attributeOptions = array();
foreach ($productAttributeOptions as $productAttribute) {
foreach ($productAttribute['values'] as $attribute) {
$attributeOptions[$productAttribute['label']][] =
array('id' => $attribute['value_index'],
'label' => $attribute['label'],
'mainId' => $productAttribute['attribute_id'] );
}
}
return $attributeOptions;