在Magento Checkout Onepage 中SaveBilling处理大致可分以下几步
1、通过Ajax提交到OnePageController.php的saveBillingAction方法
//在billing.phtml中利用Javascript对Billing类进行创建,并在该页面中通过billing.save()来进行Ajax请求
var billing = new Billing('co-billing-form', '<?php echo $this->getUrl('checkout/onepage/getAddress') ?>address/', '<?php echo $this->getUrl('checkout/onepage/saveBilling') ?>');
//javascript'save方法
save: function(){
if (checkout.loadWaiting!=false) return;
var validator = new Validation(this.form);
if (validator.validate()) {
if (checkout.method=='register' && $('billing:customer_password').value != $('billing:confirm_password').value) {
alert(Translator.translate('Error: Passwords do not match'));
return;
}
checkout.setLoadWaiting('billing');
// if ($('billing:use_for_shipping') && $('billing:use_for_shipping').checked) {
// $('billing:use_for_shipping').value=1;
// }
var request = new Ajax.Request(
this.saveUrl,
{
method: 'post',
onComplete: this.onComplete,
onSuccess: this.onSave,
onFailure: checkout.ajaxFailure.bind(checkout),
parameters: Form.serialize(this.form)
}
);
}
}
2、处理saveBillingAction中saveBilling方法
$result = $this->getOnepage()->saveBilling($data, $customerAddressId);
2.1 分析sales_flat_quote_address表中有无addressid(一条billing信息就有一个addressid与之相对应),有则更新,无则追加
$address = $this->getQuote()->getBillingAddress();
if (!empty($customerAddressId)) {
$customerAddress = Mage::getModel('customer/address')->load($customerAddressId);
if ($customerAddress->getId()) {
if ($customerAddress->getCustomerId() != $this->getQuote()->getCustomerId()) {
return array('error' => 1,
'message' => Mage::helper('checkout')->__('Customer Address is not valid.')
);
}
$address->importCustomerAddress($customerAddress);
}
} else {
unset($data['address_id']);
$address->addData($data);
//$address->setId(null);
}
$this->getQuote()->collectTotals();进行金额计算
展 开这个方法,会发现这个方法是在 app/code/core/Mage/Sales/Model/Quote/Address.php中定义,其内用反射来找到当前需要计算的模块,而 collect函数则在app/code/core/Mage/Sales/Model/Quote/Address/Total/下(通过 getTotalModels可以看到其命名空间),也就是说,不管是shipping、subtotal、grand、handling fee、tax、discount等运算规则,其内的运算方法名是统一的,名为collect()。这也就是模板模式。
public function collectTotals()
{
foreach ($this->getTotalModels() as $model) {
if (is_callable(array($model, 'collect'))) {
$model->collect($this);
}
}
return $this;
}
3、根据用户是否选择the same as shipping information来决定执行_getShippingMethodsHtml
4、执行_getShippingMethodsHtml
返 回layout中的checkout_onepage_shippingmethod 块信息(其内有显示available.phtml与additional.phtml的信息。具体请参见layout/checkout.xml下 block=”checkout_onepage_shippingmethod”下的附属块结点所对应模板的phtml文件)
protected function _getShippingMethodsHtml()
{
$layout = $this->getLayout();
$update = $layout->getUpdate();
$update->load('checkout_onepage_shippingmethod');
$layout->generateXml();
$layout->generateBlocks();
$output = $layout->getOutput();
return $output;
}
5、将块信息进行json编码,返回给opcheckout.js的savebilling的ajax
$result['update_section'] = array(
'name' => 'shipping-method',
'html' => $this->_getShippingMethodsHtml()
);
$this->getResponse()->setBody(Zend_Json::encode($result));
6、在opcheckout.js中 savebilling成功后调用onSave,而onSave指向的是nextstep函数
nextStep: function(transport){
if (transport && transport.responseText){
try{
response = eval('(' + transport.responseText + ')');
}
catch (e) {
response = {};
}
}
if (response.error){
if ((typeof response.message) == 'string') {
alert(response.message);
} else {
if (window.billingRegionUpdater) {
billingRegionUpdater.update();
}
alert(response.message.join("/n"));
}
return false;
}
checkout.setStepResponse(response);
}
//而checkout.setStepResponse(response)为基类checkout的方法
setStepResponse: function(response){
if (response.update_section) {
//response.update_section.html
$('checkout-'+response.update_section.name+'-load').update(response.update_section.html);
}
//这里的response.update_section.html就是返回在服务器端返回的json,其格式如下{"update_section":{"html":"<div>...</div>"}}
其它模块类似。
(责任编辑:最模板) |