Magento产品系列按自定义多选属性筛选

Question

I have an almost complete solution for showing Magento products selectively by region.

The regions are:
UK
Europe
Americas
Middle East
Rest of World

All customers have been assigned a region, which I have made available via the variable $customerRegion.

All my Magento Products have a custom attribute 'product_region', which has region options available for multiple selection.

list.phtml should only present products that match the customer's region. I have a partially working solution:

$_productCollection = Mage::getResourceModel('catalog/product_collection')
    ->addCategoryFilter(Mage::getSingleton('catalog/layer')->getCurrentCategory())
    ->addAttributeToFilter('product_region',
        array('eq' => Mage::getResourceModel('catalog/product')
            ->getAttribute('product_region')
            ->getSource()
            ->getOptionId($customerRegion)
        )
    )
    ->addAttributeToSelect('*');

If the customer's region is UK, and the product's region is UK, the filter works as expected.
If the customer's region is UK, and the product's region is UK AND Europe, the filter does not work as expected (no results are given).

How can I adjust the filter to get the desired behaviour?

I have tried using 'in' and 'like' instead of 'eq' but have not been successful.

Thank you.

PS An easier way to view the same problem is to look at the following code:

->addFieldToFilter(array(
    array('attribute'=>'product_region','eq'=>'49')
))

Answer 1

使用finset而不是eq （多个选择值以CSV格式存储）