Magento按分级价格为当前客户群筛选产品集合

Question

How do I filter a product collection by looking at whether a tier price for the current customer group has been set?

I think I need to look at the catalog_product_entity_tier_price table to see if there is an entry for the current customer_group_id for each product in the collection (if there isn't, the product should be excluded / filtered from the collection), but I can't figure out how to make that happen.

Background: Some products are not available to certain customer groups, and we are using tier price to make that determination (ie if a tier price exits, include in collection and display, if not, exclude and don't display).

Any help is much appreciated

Answer 1

Yup, this should be achievable, but try not to think about it in terms of tables, but rather as objects and collections.

The Product object has a method getTierPrice which uses a Factory pattern to return tier pricing depending on the product type (Simple, Bundle, etc). That method checks the current visitor's group when calculating the tier prices.

So, tier price is not an attribute in the classic Magento sense which means that you can't filter by attribute, instead you could use the walk function on the collection to calculate the Tier Price, and then filter the collection by the updated values.

An example of a walk function might be:

$collection = Mage::getModel('catalog/product')->getCollection();
$collection->walk('Namespace_Module_Helper_Data::removeStockData',array());

then within your Namespace_Module_Helper_Data , you have something like:

public static function removeStockData($product = null)
{
    $product->setData('stock_item',null);
    return;
}

Alternatively, you could run the collection through a foreach loop:

foreach($collection->getItems() as $key => $item){
   if($item->getTierPrice($qty) == $item->getPrice()){  //insert your own criteria
        $collection->removeItemByKey($key);
   }
}