在产品详细页新增一个添加到购物车按钮，从而实现一个按钮添加到购物车而不跳转，一个按钮添加到购物并跳转。要实现如下功能，需要重写控制器 CartController.php .
第一步创建自己的代码空间，我这里用的是Mingyue.
1.首先在Mingyue创建新的模块，依次创建的文件如下：
/app/code/local/Mingyue/Shopping /app/code/local/Mingyue/Shopping/etc /app/code/local/Mingyue/Shopping/etc/config.xml /app/code/local/Mingyue/Shopping/controllers /app/code/local/Mingyue/Shopping/controllers/CartController.php
2.编辑/app/code/local/Mingyue/Shopping/etc/config.xml文件，加入如下代码：
<?xml version="1.0"?> <config> <modules> <Mingyue_Shopping> <version>0.1.0</version> </Mingyue_Shopping> </modules> <global> <rewrite> <Mingyue_Shopping_cart> <from><![CDATA[#^/checkout/cart/#]]></from> <to>/shopping/cart/</to> </Mingyue_Shopping_cart> </rewrite> <routers> <checkout> <rewrite> <cart> <to>shopping/cart</to> <override_actions>true</override_actions> <actions> <add> <to>shopping/cart/add</to> </add> </actions> </cart> </rewrite> </checkout> </routers> </global> <frontend> <routers> <Mingyue_Shopping> <use>standard</use> <args> <module>Mingyue_Shopping</module> <frontName>shopping</frontName> </args> </Mingyue_Shopping> </routers> </frontend> </config>
3.改写自己的控制器
?<?php
require_once 'Mage/Checkout/controllers/CartController.php';
class Mingyue_Shopping_CartController extends Mage_Checkout_CartController
{
#覆写indexAction方法
public function indexAction()
{
# Just to make sure
// echo ('成功重写购物车！');
parent::indexAction();
}
public function addAction()
{
$cart?? = $this->_getCart();
$params = $this->getRequest()->getParams();
try {
if (isset($params['qty'])) {
$filter = new Zend_Filter_LocalizedToNormalized(
array('locale' => Mage::app()->getLocale()->getLocaleCode())
);
$params['qty'] = $filter->filter($params['qty']);
}
$product = $this->_initProduct();
$related = $this->getRequest()->getParam('related_product');
if (!$product) {
$this->_goBack();
return;
}
$cart->addProduct($product, $params);
if (!empty($related)) {
$cart->addProductsByIds(explode(',', $related));
}
$cart->save();
$this->_getSession()->setCartWasUpdated(true);
Mage::dispatchEvent('checkout_cart_add_product_complete',
array('product' => $product, 'request' => $this->getRequest(), 'response' => $this->getResponse())
);
if (!$this->_getSession()->getNoCartRedirect(true)) {
if (!$cart->getQuote()->getHasError()){
$message = $this->__('%s was added to your shopping cart.', Mage::helper('core')->htmlEscape($product->getName()));
$this->_getSession()->addSuccess($message);
}
if ($returnUrl = $this->getRequest()->getParam('return_url')) {
// clear layout messages in case of external url redirect
if ($this->_isUrlInternal($returnUrl)) {
$this->_getSession()->getMessages(true);
}
$this->getResponse()->setRedirect($returnUrl);
} elseif (!Mage::getStoreConfig('checkout/cart/redirect_to_cart')
&& !$this->getRequest()->getParam('in_cart')
&& $backUrl = $this->_getRefererUrl()) {
$this->getResponse()->setRedirect($backUrl);
} else {
if (($this->getRequest()->getActionName() == 'add') && !$this->getRequest()->getParam('in_cart')) {
$this->_getSession()->setContinueShoppingUrl($this->_getRefererUrl());
}
if($this->getRequest()->getParam('noCheckoutYet')=="yes")
$this->getResponse()->setRedirect($this->_getRefererUrl());
else
$this->_redirect('checkout/cart');
}
}
}
catch (Mage_Core_Exception $e) {
if ($this->_getSession()->getUseNotice(true)) {
$this->_getSession()->addNotice($e->getMessage());
} else {
$messages = array_unique(explode("\n", $e->getMessage()));
foreach ($messages as $message) {
$this->_getSession()->addError($message);
}
}
$url = $this->_getSession()->getRedirectUrl(true);
if ($url) {
$this->getResponse()->setRedirect($url);
} else {
$this->_redirectReferer(Mage::helper('checkout/cart')->getCartUrl());
}
}
catch (Exception $e) {
$this->_getSession()->addException($e, $this->__('Cannot add the item to shopping cart.'));
$this->_goBack();
}
}
}
?>
4.在app/etc/modules/创建Mingyue_All.xml文件编辑如下：
<?xml version="1.0"?> <config> <modules> <Mingyue_Shopping> <active>true</active> <codePool>local</codePool> </Mingyue_Shopping> </modules> </config>
5.修改视图文件app/design/frontend/rwd/mingyue/layout/checkout.xml,在layout标签中，添加下面内容：
<Mingyue_shopping_cart_index> <update handle="checkout_cart_index"/> </Mingyue_shopping_cart_index>
6.修改文件app/design/frontend/rwd/mingyue/template/catalog/product/view/addtocart.phtml,修改为如下：
<div class="buy">
<div class="buy_link">
<button type="button" title="<?php echo $buttonTitle ?>" id="product-addtocart-button" class="buynow" onclick="productAddToCartForm.submit(this)"><span><span><?php echo $this->__('Buy it now') ?></span></span></button>
<!--新增添加到购物车-->
<a type="button" title="<?php echo $buttonTitle;?>" onclick="productAddToCartForm.submit(this)" class="addcart button btn-cart" href="<?php echo Mage::getUrl('checkout/cart/add', array('product' => $_product->getId(), 'noCheckoutYet'=>'yes')) ?>"><span><span><i></i><?php echo $buttonTitle?></span></span></a>
</div>
<?php echo $this->getChildHtml('', true, true) ?>
</div>
至此成功，效果图如下：
