zen_cart实现支付前生成订单的方法

本文实例讲述了zen_cart实现支付前生成订单的方法。分享给大家供大家参考，具体如下：

除了paypal之外. 客户通过其他的支付方式进入index.php?main_page=checkout_confirmation这个页面就能生出订单.
但是!! paypal就有点与众不同, 它只能是从它的官网 [paypal.com] 返回来并且进入checkout_process这个页面后,才能生出订单

而意外常会发生:比如网络不顺. 又比如客户不小心在返回前就关了页面.

那么,我们的网站后台就看不到客户买的是什么产品(虽然在paypal后台能看到是谁买了,但确实是无法知道他到底买了什么,)这可是一个好郁闷的事情

paypal防漏单的原理就是------在 checkout_confirmation.php这个页面先生出订单!!!

方法是：在这个文件的最后部分

复制代码代码如下:

	echo TITLE_CONTINUE_CHECKOUT_PROCEDURE . '<br />' . TEXT_CONTINUE_CHECKOUT_PROCEDURE;

后面添加代码：

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									// create the order record 防漏单 

									if ($_SESSION['payment'] == 'paypal') { 

									$insert_id = $order->create($order_totals, 2);

									$zco_notifier->notify('NOTIFY_CHECKOUT_PROCESS_AFTER_ORDER_CREATE');

									$payment_modules->after_order_create($insert_id);

									$zco_notifier->notify('NOTIFY_CHECKOUT_PROCESS_AFTER_PAYMENT_MODULES_AFTER_ORDER_CREATE');

									// store the product info to the order

									$order->create_add_products($insert_id);

									$_SESSION['order_number_created'] = $insert_id;

为了避免对其他支付方式产生影响，代码做了个判断，只有paypal支付会运行这些生成订单的代码，加了这段后就不用担心会漏单了。

如果需要更完美的做法,为防止顾客在访问checkout process的时候会重复生成订单, 那么就需要加个判断

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									if($_SESSION['payment']!='paypal'){

									/*// create the order record

									$insert_id = $order->create($order_totals, 2);

									$zco_notifier->notify('NOTIFY_CHECKOUT_PROCESS_AFTER_ORDER_CREATE');

									$payment_modules->after_order_create($insert_id);

									$zco_notifier->notify('NOTIFY_CHECKOUT_PROCESS_AFTER_PAYMENT_MODULES_AFTER_ORDER_CREATE');

									// store the product info to the order

									$order->create_add_products($insert_id);

									$_SESSION['order_number_created'] = $insert_id;

									$zco_notifier->notify('NOTIFY_CHECKOUT_PROCESS_AFTER_ORDER_CREATE_ADD_PRODUCTS');

									//send email notifications

									$order->send_order_email($insert_id, 2);

									$zco_notifier->notify('NOTIFY_CHECKOUT_PROCESS_AFTER_SEND_ORDER_EMAIL');*/

									}

而且在确认页面，如果顾客一直刷新页面，就会一直生成订单，可以加个限制.

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									// create the order record 防漏单

									if ($_SESSION['payment'] == 'paypal' and !isset($_SESSION['order_number_created'])) {

									$insert_id = $order->create($order_totals, 2);

									$zco_notifier->notify('NOTIFY_CHECKOUT_PROCESS_AFTER_ORDER_CREATE');

									$payment_modules->after_order_create($insert_id);

									$zco_notifier->notify('NOTIFY_CHECKOUT_PROCESS_AFTER_PAYMENT_MODULES_AFTER_ORDER_CREATE');

									// store the product info to the order

									$order->create_add_products($insert_id);

									$_SESSION['order_number_created'] = $insert_id;

									}

在pages/checkout_payment/header_php.php任意位置加上

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									unset($_SESSION['order_number_created']);

这样,就算顾客在确认页面一直刷新，因为已经设置了

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									$_SESSION['order_number_created']

订单不再生成，

如果顾客返回修改了购物车，再次到达checkout_payment时$_SESSION['order_number_created']将被清除，

其实，生成订单的代码可以写在modules/payment/paypal.php的 function confirmation()中。

代码如下：

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									function confirmation() {

									if(!isset($_SESSION['order_number_created']))

									{

									global $order,$order_total_modules,$order_totals,$zco_notifier,$insert_id; 

									$zco_notifier->notify('NOTIFY_CHECKOUT_PROCESS_BEGIN'); // if the customer is not logged on, redirect them to the time out page

									if (!$_SESSION['customer_id']) 

									{ 

									zen_redirect(zen_href_link(FILENAME_TIME_OUT)); 

									} 

									else

									{ // validate customer 

									if (zen_get_customer_validate_session($_SESSION['customer_id']) == false) 

									{ 

									$_SESSION['navigation']->set_snapshot(array('mode' => 'SSL', 'page' => FILENAME_CHECKOUT_SHIPPING));

									zen_redirect(zen_href_link(FILENAME_LOGIN, '', 'SSL')); 

									} 

									} 

									if(isset($mycartID)&&$mycartID == $_SESSION['cart']->cartID)

									{ 

									return array('title' => MODULE_PAYMENT_PAYPAL_TEXT_DESCRIPTION); 

									} 

									$mycartID = $_SESSION['cart']->cartID; 

									$order = new order; // prevent 0-entry orders from being generated/spoofed 

									if (sizeof($order->products) < 1) 

									{ 

									zen_redirect(zen_href_link(FILENAME_SHOPPING_CART)); 

									} 

									$order_total_modules = new order_total; 

									$zco_notifier->notify('NOTIFY_CHECKOUT_PROCESS_BEFORE_ORDER_TOTALS_PRE_CONFIRMATION_CHECK');

									//$order_totals = $order_total_modules->pre_confirmation_check(); 

									$zco_notifier->notify('NOTIFY_CHECKOUT_PROCESS_BEFORE_ORDER_TOTALS_PROCESS'); 

									$order_totals = $order_total_modules->process(); 

									$zco_notifier->notify('NOTIFY_CHECKOUT_PROCESS_AFTER_ORDER_TOTALS_PROCESS'); 

									if (!isset($_SESSION['payment']) && !$credit_covers) 

									{ 

									zen_redirect(zen_href_link(FILENAME_DEFAULT)); 

									} // load the before_process

									// load the before_process function from the payment modules 

									//$zco_notifier->notify('NOTIFY_CHECKOUT_PROCESS_AFTER_PAYMENT_MODULES_BEFOREPROCESS');

									// create the order record 

									$insert_id = $order->create($order_totals, 2); 

									require(DIR_WS_LANGUAGES.'english/email_extras.php'); 

									require(DIR_WS_LANGUAGES.'english/checkout_process.php'); 

									// store the product info to the order 

									$order->create_add_products($insert_id); 

									$_SESSION['order_number_created'] = $insert_id; 

									$zco_notifier->notify('NOTIFY_CHECKOUT_PROCESS_AFTER_ORDER_CREATE_ADD_PRODUCTS');

									$order->send_order_email($insert_id, 2);

									if (is_array($order_total_modules->modules)) 

									{

									reset($order_total_modules->modules);

									while (list(, $value) = each($order_total_modules->modules)) 

									{

									$class = substr($value, 0, strrpos($value, '.'));

									if (!isset($GLOBALS[$class])) continue;

									$GLOBALS[$class]->output=null;

									}

									}

									}

									else

									return false;

									}