Question

I am able to run AND and OR boolean conditions on Magento using addFieldToFilter and addAttributeToFilter.

But, I am curious about implementing more complex boolean conditions like below:

WHERE (`sku > 5` AND `price` > '10') OR (`name` = 'books')

for AND condition, I have

$collections = Mage::getModel('catalog/product')->getCollection()->addAttributeToSelect('*')
->addFieldToFilter( 'sku', array('gt' => 5 )
->addFieldToFilter('price', array('gt' => 10);

Which translates to the first parenthesis of the WHERE condition:

(`sku` > 5 AND `price` > 10)

I do not know how to proceed from here to express the OR condition

`name` = 'books'

Any help will be appreciated. Thanks

Answer 1

See my earlier post:

complex boolean conditions on Magento

You can create OR by passing an array:

Mage::getModel('catalog/product')
->getCollection()
->addFieldToFilter('price', array('gt' => 10))
->addAttributeToFilter(
    array(
        array('attribute'=>'firstname', 'like'=>'test%'),
        array('attribute'=>'lastname', 'like'=>'test%'),
    )
)

Each additional call to addAttributeToFilter() will ANDed, but firstname / lastname will be ORed.

If you need more complex select statements you can always get the select object from the collection and perform adjustments to the query. Look at Varien_Db_Select for hints 🙂

$collection->getSelect()->join(..)->orWhere(..);  // etc

You can even debug the query to see if it’s looking ok:

echo $collection->getSelect()->__toString();