/** * Add price rule filter * * @param Mage_Reports_Model_Resource_Report_Collection_Abstract $collection * @param Varien_Object $filterData * @return Mage_Adminhtml_Block_Report_Grid_Abstract */ protected function _addCustomFilter($collection, $filterData) { if ($filterData->getPriceRuleType()) { $rulesList = $filterData->getData('rules_list'); if (isset($rulesList[0])) { $rulesIds = explode(',', $rulesList[0]); $collection->addRuleFilter($rulesIds); } } return parent::_addCustomFilter($filterData, $collection); }