magento 货币换算

摘要：需要注意的是，凡是涉及到两个币种之间转换的，都必须确保系统中已经导入了两币种之间的汇率。更多币种之间的方法可以到助手类中找到。将人民币转换为美金将美金转换为人民币汇率的导入后台页面有个按钮点击导入货币汇率。

1、获取当前店铺的货币方法：
  当前店铺的基准货币：$baseCurrencyCode = Mage::app()->getStore()->getBaseCurrencyCode();
 $CurrentCurrencyCode = Mage::app()->getStore()->getCurrentCurrencyCode();
 $CurrentCurrencySymnol = Mage::app()->getLocale()->currency(Mage::app()->getStore()->getCurrentCurrencyCode())->getSymbol();
 $CurrentCurrencyName = Mage::app()->getLocale()->currency(Mage::app()->getStore()->getCurrentCurrencyCode())->getName();
2、获取自定义货币的符号，code,返回的是一个二维数组
  $currencyDate = Mage::getModel("currencysymbol/system_currencysymbol")->getCurrencySymbolsData()；
//获取系统默认的结算币种
$baseCurrencyCode = Mage::app()->getBaseCurrencyCode();

//获取所有系统可用结算币种
$allowedCurrencies = Mage::getModel("directory/currency")
    ->getConfigAllowCurrencies();

//获取两个币种之间的汇率
$currencyRates = Mage::getModel("directory/currency")
    ->getCurrencyRates($baseCurrencyCode, array_values($allowedCurrencies));

下面是几个常用的货币转换方法。需要注意的是，凡是涉及到两个币种之间转换的，都必须确保系统中已经导入了两币种之间的汇率。更多币种之间的方法可以到directory/data助手类中找到。

// 将100人民币转换为美金
$Price = Mage::helper("directory")->currencyConvert(100, "CNY", "USD");
//将100美金转换为人民币
$Price = Mage::helper("directory")->currencyConvert(100, "USD", "CNY");

汇率的导入：
magento后台currency rate页面有个Import按钮：

点击import导入货币汇率。
汇率导入的方法：

class Mage_Adminhtml_System_CurrencyController extends Mage_Adminhtml_Controller_Action
{
    public function fetchRatesAction()
    {
        try {
            $service = $this->getRequest()->getParam("rate_services");/*后台Import Service 的值*/
            $this->_getSession()->setCurrencyRateService($service);
            if( !$service ) {
                throw new Exception(Mage::helper("adminhtml")->__("Invalid Import Service Specified"));
            }
            try {/*实例化Webservicex这个Model，magento自带的是Webservicex*/
                $importModel = Mage::getModel(
                    Mage::getConfig()->getNode("global/currency/import/services/" . $service . "/model")->asArray()
                );
            } catch (Exception $e) {
                Mage::throwException(Mage::helper("adminhtml")->__("Unable to initialize import model"));
            }
            $rates = $importModel->fetchRates();
            $errors = $importModel->getMessages();
            if( sizeof($errors) > 0 ) {
                foreach ($errors as $error) {
                    Mage::getSingleton("adminhtml/session")->addWarning($error);
                }
                Mage::getSingleton("adminhtml/session")->addWarning(Mage::helper("adminhtml")->__("All possible rates were fetched, please click on "Save" to apply"));
            } else {
                Mage::getSingleton("adminhtml/session")->addSuccess(Mage::helper("adminhtml")->__("All rates were fetched, please click on "Save" to apply"));
            }

            Mage::getSingleton("adminhtml/session")->setRates($rates);
        }
        catch (Exception $e){
            Mage::getSingleton("adminhtml/session")->addError($e->getMessage());
        }
        $this->_redirect("*/*/");
    }
}

下面是Webservicx的文件路径：

说明:
$rates = $importModel->fetchRates();这不调用的方法在下面可以找到：

abstract class Mage_Directory_Model_Currency_Import_Abstract
{
/*Webservicex继承这个Model*/
 public function fetchRates()
    {
        $data = array();
        $currencies = $this->_getCurrencyCodes();/*获取website所有允许的货币code*/
        $defaultCurrencies = $this->_getDefaultCurrencyCodes();/*获取website中默认货币code*/
        @set_time_limit(0);/*设置程序执行时间，为零表示，执行直到程序结束（因为要去第三方获取资源，所以较长）*/
        foreach ($defaultCurrencies as $currencyFrom) {
            if (!isset($data[$currencyFrom])) {
                $data[$currencyFrom] = array();
            }

            foreach ($currencies as $currencyTo) {
                if ($currencyFrom == $currencyTo) {
                    $data[$currencyFrom][$currencyTo] = $this->_numberFormat(1);
                }
                else {
                    $data[$currencyFrom][$currencyTo] = $this->_numberFormat($this->_convert($currencyFrom, $currencyTo));
                }
            }
            ksort($data[$currencyFrom]);
        }

        return $data;
    }
}

根据以上几个方法，可以写一个定时任务，按时更新store的货币汇率