I need to get a collection of products next by price for specific product in some category. For example: I have product White Shoes, it is located in Shoes category. I need to get next five products, that has higher price than White Shoes in Shoes category, and five products that has lower price.
Thanks for your help!
I had similar task, and here what I've done:
$customerGroupId = Mage::helper('customer')->getCustomer()->getGroupId();
$websiteId = Mage::app()->getStore()->getWebsiteId();
$finalPrice = $product->getFinalPrice();
$coreResource = Mage::getSingleton('core/resource');
$adapter = $coreResource->getConnection('catalog_read');
$prevSelect = $adapter->select()
->from(array('i' => $coreResource->getTableName('catalog/product_index_price')), array())
->join(
array('p' => $coreResource->getTableName('catalog/category_product')),
'p.product_id = i.entity_id',
array('product_id')
)
->where('p.category_id = ?', $categoryId)
->where('i.customer_group_id = ?', $customerGroupId)
->where('i.website_id = ?', $websiteId)
->where('p.product_id != ?', $product->getId())
->where('i.final_price < ?', $finalPrice)
->order('i.final_price DESC')
->limit(self::PRODUCTS_BLOCK_SIZE);
$lowerIds = array_reverse($adapter->fetchCol($prevSelect));
$nextSelect = $adapter->select()
->from(array('i' => $coreResource->getTableName('catalog/product_index_price')), array())
->join(
array('p' => $coreResource->getTableName('catalog/category_product')),
'p.product_id = i.entity_id',
array('product_id')
)
->where('p.category_id = ?', $categoryId)
->where('i.customer_group_id = ?', $customerGroupId)
->where('i.website_id = ?', $websiteId)
->where('p.product_id != ?', $product->getId())
->where('i.final_price > ?', $finalPrice)
->order('i.final_price ASC')
->limit(self::PRODUCTS_BLOCK_SIZE);
$higherIds = $adapter->fetchCol($nextSelect);
$lowerSliced = array_slice($lowerIds, -self::PRODUCTS_BLOCK_SIZE);
$requiredFromHigher = self::PRODUCTS_BLOCK_SIZE - count($lowerSliced);
$similarIds = array_merge(
$lowerSliced,
array_slice($higherIds, 0, $requiredFromHigher)
);
$collection = Mage::getResourceModel('catalog/product_collection')
->addAttributeToSelect('name')
->addAttributeToSelect('small_image')
->addAttributeToSelect('product_url')
->addAttributeToFilter('entity_id', array('in' => $similarIds))
->setPage(1, self::PRODUCTS_BLOCK_SIZE);