Magento重定向环路-购物车控制器在一侧

我创建了一个模块，用于在客户购物车中添加折扣代码，如果他们是新客户或在过去24小时内没有订购，则该模块适用于为员工提供午餐的公司，他们每天都会收到一个子公司，使用3.00英镑。

所以我有：

app/code/local/Brave/辅助/控制器/CartController.php

<?php
require_once Mage::getModuleDir('controllers', 'Mage_Checkout').DS.'CartController.php';
class Brave_Subsidary_CartController extends Mage_Checkout_CartController {
    const DISCOUNTCODE = 'BCOMSTAFF';
    public function addAction() {
        parent::addAction();
        $this->autoApplySubsidaryDiscount();
    }
    public function indexAction() {
        parent::addAction();
        $this->autoApplySubsidaryDiscount();
    }
    public function autoApplySubsidaryDiscount() {
        $customer = Mage::getSingleton('customer/session')->getCustomer();
        $orders = Mage::getResourceModel('sales/order_collection')
        ->addFieldToSelect('*')
        ->addFieldToFilter('customer_id', $customer->getId()); 
        if(!$orders->getSize()) {
            // New Customer...     
            $this->applyDiscountCoupon();
        } else {
            // Check last order date
            $orderCollection = Mage::getModel('sales/order')->getCollection()
            ->addFilter('customer_id', $customer->getId())
            ->setOrder('created_at', Varien_Data_Collection_Db::SORT_ORDER_DESC);
            $newestOrder = $orderCollection->getFirstItem();
            $dateToday = Mage::getModel('core/date')->timestamp(time());
            $lastOrderDate = Mage::getModel('core/date')->timestamp(strtotime($newestOrder->getData('created_at')));
            // only apply if last order was more than 24hrs ago..
            if( $dateToday > $lastOrderDate ) {
                $this->applyDiscountCoupon();   
            }
        }
    }
    public function applyDiscountCoupon() {
        Mage::getSingleton("checkout/session")->setData("coupon_code",self::DISCOUNTCODE);
        Mage::getSingleton('checkout/cart')->getQuote()->setCouponCode(self::DISCOUNTCODE)->save();     
    }
}
?> 

app/code/local/Brave/Setudentary/etc/config.xml

<?xml version="1.0" encoding="UTF-8"?>
<config>
    <modules>
        <Brave_Subsidary>
            <version>0.1.0</version>
        </Brave_Subsidary>
    </modules>
    <frontend>
        <routers>
            <checkout>
                <use>standard</use>
                <args>
                    <modules>
                        <Brave_Subsidary before="Mage_Checkout">Brave_Subsidary</Brave_Subsidary>
                    </modules>
                </args>
            </checkout>
        </routers>
    </frontend>
</config>

然后我的模块文件：app/etc/modules/Brave_Subsidary.xml

<?xml version="1.0" encoding="UTF-8"?>
<config>
    <modules>
        <Brave_Subsidary>
            <active>true</active>
            <codePool>local</codePool>
        </Brave_Subsidary>
    </modules>
</config> 

问题是，我在购物车页面上或在购物车中添加项目时得到了重定向循环，这可能是一个非常简单的问题，但试图在谷歌上搜索任何相关内容真的是大海捞针！

FireFox告诉我的错误是：

Firefox检测到服务器正在以一种永远不会完成的方式重定向对此地址的请求