Magento addFieldToFilter: Two fields, match as OR, not AND

Question

I\'ve been stuck on this for the last few hours. I got it working by hacking a few lines in /lib/Varien/Data/Collection/Db.php, but I\'d rather use the proper s

Answer 1

OR conditions can be generated like this:

$collection->addFieldToFilter(
    array('field_1', 'field_2', 'field_3'), // columns
    array( // conditions
        array( // conditions for field_1
            array('in' => array('text_1', 'text_2', 'text_3')),
            array('like' => '%text')
        ),
        array('eq' => 'exact'), // condition for field 2
        array('in' => array('val_1', 'val_2')) // condition for field 3
    )
);

This will generate an SQL WHERE condition something like:

... WHERE (
         (field_1 IN ('text_1', 'text_2', 'text_3') OR field_1 LIKE '%text')
      OR (field_2 = 'exact')
      OR (field_3 IN ('val_1', 'val_2'))
    )

Each nested array() generates another set of parentheses for an OR condition.