/** * @param AW_Followupemail_Model_Rule|integer $rule * * @return AW_Followupemail_Model_Mysql4_Unsubscribe_Collection */ public function addRuleFilter($rule) { if ($rule instanceof AW_Followupemail_Model_Rule) { $ruleId = $rule->getId(); } elseif (is_numeric($rule)) { $ruleId = $rule; } else { return $this; } $this->addFieldToFilter('rule_id', $ruleId); return $this; }