php - Magento中用于信用卡折扣的自定义价格规则

Question

我希望有人可以帮助我解决我一直遇到问题的价格规则。如果有人用指定的信用卡付款，我想打折。

例如，假设我想给 Visa 信用卡一定的折扣，即如果客户使用 Visa 信用卡付款，他必须获得 {xy} 金额的折扣。

我已经尝试了很多，我扩展了 Mage_SalesRule_Model_Rule_Condition_Address 类并添加了一个新属性，并且我在管理站点获得了创建规则的选项。

但问题是，当我使用信用卡签证付款并再次返回付款模式以更改模式并使用其他支付卡申请时，它会获取前一张的信息并对未指定的信用卡给予折扣。我的扩展课程是：

class Alw_ManageProduct_Model_Condition_Address extends Mage_SalesRule_Model_Rule_Condition_Address
{
    public function loadAttributeOptions()
    {
        $attributes = array(
            'base_subtotal' => Mage::helper('salesrule')->__('Subtotal'),
            'total_qty' => Mage::helper('salesrule')->__('Total Items Quantity'),
            'weight' => Mage::helper('salesrule')->__('Total Weight'),
            'payment_method' => Mage::helper('salesrule')->__('Payment Method'),
            'shipping_method' => Mage::helper('salesrule')->__('Shipping Method'),
            'postcode' => Mage::helper('salesrule')->__('Shipping Postcode'),
            'region' => Mage::helper('salesrule')->__('Shipping Region'),
            'region_id' => Mage::helper('salesrule')->__('Shipping State/Province'),
            'country_id' => Mage::helper('salesrule')->__('Shipping Country'),
            'cc_type' => Mage::helper('salesrule')->__('Credit Card Type'),
        );

        $this->setAttributeOption($attributes);

        return $this;
    }

    public function getAttributeElement()
    {
        $element = parent::getAttributeElement();
        $element->setShowAsText(true);
        return $element;
    }

    public function getInputType()
    {
        switch ($this->getAttribute()) {
            case 'base_subtotal': case 'weight': case 'total_qty':
                return 'numeric';

            case 'shipping_method': case 'payment_method': case 'country_id': case 'cc_type': case 'region_id':
                return 'select';
        }
        return 'string';
    }

    public function getValueElementType()
    {
        switch ($this->getAttribute()) {
            case 'shipping_method': 
            case 'payment_method': 
            case 'country_id': 
            case 'region_id': 
            case 'cc_type' :
                return 'select';
        }
        return 'text';
    }

    public function getValueSelectOptions()
    {
        if (!$this->hasData('value_select_options')) {
            switch ($this->getAttribute()) {
                case 'country_id':
                    $options = Mage::getModel('adminhtml/system_config_source_country')
                        ->toOptionArray();
                    break;

                case 'region_id':
                    $options = Mage::getModel('adminhtml/system_config_source_allregion')
                        ->toOptionArray();
                    break;

                case 'shipping_method':
                    $options = Mage::getModel('adminhtml/system_config_source_shipping_allmethods')
                        ->toOptionArray();
                    break;

                case 'payment_method':
                    $options = Mage::getModel('adminhtml/system_config_source_payment_allmethods')
                        ->toOptionArray();
                    break;

                case 'cc_type':
                    $options = Mage::getModel('adminhtml/system_config_source_payment_cctype')
                        ->toOptionArray();
                    break;

                default:
                    $options = array();
            }
            $this->setData('value_select_options', $options);
        }
        return $this->getData('value_select_options');
    }

    /**
     * Validate Address Rule Condition
     *
     * @param Varien_Object $object
     * @return bool
     */
    public function validate(Varien_Object $object)
    {
        $address = $object;
        if (!$address instanceof Mage_Sales_Model_Quote_Address) {
            if ($object->getQuote()->isVirtual()) {
                $address = $object->getQuote()->getBillingAddress();
            }
            else {
                $address = $object->getQuote()->getShippingAddress();
            }
        }

        if ('payment_method' == $this->getAttribute() && ! $address->hasPaymentMethod()) {
            $address->setPaymentMethod($object->getQuote()->getPayment()->getMethod());
        }

        if('cc_type' == $this->getAttribute() && ! $address->hasCcType()) {
            $address->setCcType($object->getQuote()->getPayment()->getCcType());

            // validation cc type

            //echo $cct = $object->getQuote()->getPayment()->getCcType();
            //die;

            // if ($this->validateAttribute($cct)) {
            //    return true;
            //} else {
            //    return false;
            //}              

        }

        return parent::validate($address);
    }
}

请帮助我，如果有人可以......