php - Magento变更处理费算法

我使用的是magento 1.8.1，我有一个严重的问题：手续费是按总运费的百分比计算的。相反，我需要将此费用计算为购物车小计的百分比（不包括运费）。现在，对于一辆100美元的购物车，运费为10美元，手续费为10%，费用计算为1美元（运费的10%），总计111美元。相反，我们需要手续费是购物车的10%，总共120美元。
我们怎么能做到这一点我发现算法的文件在app/code/core/mage/shipping/model/carrier/abstract.php中
线路是460-468

/**
 * Calculate price considering free shipping and handling fee
 *
 * @param string $cost
 * @param string $method
 * @return float|string
 */
public function getMethodPrice($cost, $method = '')
{
    return $method == $this->getConfigData($this->_freeMethod)
        && $this->getConfigFlag('free_shipping_enable')
        && $this->getConfigData('free_shipping_subtotal') <= $this->_rawRequest->getBaseSubtotalInclTax()
        ? '0.00'
        : $this->getFinalPriceWithHandlingFee($cost);
}

/**
 * Get the handling fee for the shipping + cost
 *
 * @param float $cost
 * @return float final price for shipping method
 */
public function getFinalPriceWithHandlingFee($cost)
{
    $handlingFee = $this->getConfigData('handling_fee');
    $handlingType = $this->getConfigData('handling_type');
    if (!$handlingType) {
        $handlingType = self::HANDLING_TYPE_FIXED;
    }
    $handlingAction = $this->getConfigData('handling_action');
    if (!$handlingAction) {
        $handlingAction = self::HANDLING_ACTION_PERORDER;
    }

    return $handlingAction == self::HANDLING_ACTION_PERPACKAGE
        ? $this->_getPerpackagePrice($cost, $handlingType, $handlingFee)
        : $this->_getPerorderPrice($cost, $handlingType, $handlingFee);
}

/**
 * Get final price for shipping method with handling fee per package
 *
 * @param float $cost
 * @param string $handlingType
 * @param float $handlingFee
 * @return float
 */
protected function _getPerpackagePrice($cost, $handlingType, $handlingFee)
{
    if ($handlingType == self::HANDLING_TYPE_PERCENT) {
        return ($cost + ($cost * $handlingFee/100)) * $this->_numBoxes;
    }

    return ($cost + $handlingFee) * $this->_numBoxes;
}

/**
 * Get final price for shipping method with handling fee per order
 *
 * @param float $cost
 * @param string $handlingType
 * @param float $handlingFee
 * @return float
 */
protected function _getPerorderPrice($cost, $handlingType, $handlingFee)
{
    if ($handlingType == self::HANDLING_TYPE_PERCENT) {
        return ($cost * $this->_numBoxes) + ($cost * $this->_numBoxes * $handlingFee / 100);
    }

    return ($cost * $this->_numBoxes) + $handlingFee;
}

最佳答案

将文件app/code/core/Mage/Shipping/Model/Carrier/Abstract.php复制到app/code/local/Mage/Shipping/Model/Carrier/Abstract.php（注意代码池-本地）

protected function _getPerorderPrice($cost, $handlingType, $handlingFee)
{
    if ($handlingType == self::HANDLING_TYPE_PERCENT) {
        if($cost) { //if shipping is not free
            $cartTotal = Mage::getSingleton('checkout/session')->getQuote()->getTotals();
            return ($cost * $this->_numBoxes) + ($cartTotal["subtotal"]->getValue() * $handlingFee / 100);
        } else {  //if shipping is free
              return ($cost * $this->_numBoxes) + ($cost * $this->_numBoxes * $handlingFee / 100);
     }

  return ($cost * $this->_numBoxes) + $handlingFee;
}