“停止进一步处理规则”不适用于所有项目

Magento CE1.9 / EE1.13中的“停止进一步处理规则”似乎存在一个错误，其中购物车中只有第一个项目可以享受折扣。

我希望：如果我有多个购物车的规则，每个有“停止进一步的规则处理：是的”，只有第一个这些规则将适用，但是将它应用在完全针对该规则的所有匹配项目。

发生了什么：折扣仅应用于购物车中的第一个项目，之后停止规则处理。

查看屏幕截图：我希望整个购物车的折扣是50美元，但是由于“停止进一步的规则处理”，我只能看到25美元。

我认为这可能是因为_calculator 有效地存储为Mage_SalesRule_Model_Quote_Discount类中的一个单例，这意味着要处理的第二个项目将达到$ this-> _ stopFurtherRules == true和bail。

我的思维过程是存储可以处理的$ rule的ID，从而允许其他项仅处理此规则。

根据CE1.9.0.1和EE1.14.0.1

Mage_SalesRule_Model_Validator行316

- if ($this->_stopFurtherRules) {
+ if ($this->_stopFurtherRules !== false && $rule->getId() != $this->_stopFurtherRules) {

Mage_SalesRule_Model_Validator第514行

- $this->_stopFurtherRules = true;
+ $this->_stopFurtherRules = $rule->getId();

这是我提出的解决方案，我很想听听为什么这是一个糟糕的主意！

对我有用的是在处理完每个项目后重置停止进一步规则标志，以允许下一个项目根据该规则检查规则。

添加此行：

$this->_stopFurtherRules = false;

直接在process()方法中的此循环之后：

foreach ($this->_getRules() as $rule) {
    ...
}

518对我来说，那是在线上。

在我看来，Magento背靠前。迭代项目，然后迭代每个项目的规则。应该先迭代规则，然后再迭代商品，这样规则才能应用于整个购物车，然后才可以防止进一步的折扣。

此问题已在Magento CE的更高版本中修复。在1.9.2.1中，您可以找到解决方案，但是可能早已解决。

原始代码如下所示：

$appliedRuleIds = array();
foreach ($this->_getRules() as $rule) {
    if ($this->_stopFurtherRules) {
        break;
    }

固定代码应为：

$appliedRuleIds = array();
$this->_stopFurtherRules = false;
foreach ($this->_getRules() as $rule) {
    // The if-clause is removed
    ...    

区别在于$this->_stopFurtherRules = false;和if ($this->_stopFurtherRules) {...}

没有其他的。

或者，如果您使用的是1.9，则可以简单地替换整个文件而没有危险。

希望这对某人有帮助。

对于解决该问题的所有方法，应覆盖Mage_SalesRule_Model_Validator类的处理方法，如下所示

public function process(Mage_Sales_Model_Quote_Item_Abstract $item)
{
    $item->setDiscountAmount(0);
    $item->setBaseDiscountAmount(0);
    $item->setDiscountPercent(0);
    $quote      = $item->getQuote();
    $address    = $this->_getAddress($item);

    $itemPrice              = $this->_getItemPrice($item);
    $baseItemPrice          = $this->_getItemBasePrice($item);
    $itemOriginalPrice      = $this->_getItemOriginalPrice($item);
    $baseItemOriginalPrice  = $this->_getItemBaseOriginalPrice($item);

    if ($itemPrice < 0) {
        return $this;
    }

    $appliedRuleIds = array();
    $this->_stopFurtherRules = false;
    foreach ($this->_getRules() as $rule) {

        /* @var $rule Mage_SalesRule_Model_Rule */
        if (!$this->_canProcessRule($rule, $address)) {
            continue;
        }

        if (!$rule->getActions()->validate($item)) {
            continue;
        }

        $qty = $this->_getItemQty($item, $rule);
        $rulePercent = min(100, $rule->getDiscountAmount());

        $discountAmount = 0;
        $baseDiscountAmount = 0;
        //discount for original price
        $originalDiscountAmount = 0;
        $baseOriginalDiscountAmount = 0;

        switch ($rule->getSimpleAction()) {
            case Mage_SalesRule_Model_Rule::TO_PERCENT_ACTION:
                $rulePercent = max(0, 100-$rule->getDiscountAmount());
            //no break;
            case Mage_SalesRule_Model_Rule::BY_PERCENT_ACTION:
                $step = $rule->getDiscountStep();
                if ($step) {
                    $qty = floor($qty/$step)*$step;
                }
                $_rulePct = $rulePercent/100;
                $discountAmount    = ($qty * $itemPrice - $item->getDiscountAmount()) * $_rulePct;
                $baseDiscountAmount = ($qty * $baseItemPrice - $item->getBaseDiscountAmount()) * $_rulePct;
                //get discount for original price
                $originalDiscountAmount    = ($qty * $itemOriginalPrice - $item->getDiscountAmount()) * $_rulePct;
                $baseOriginalDiscountAmount =
                    ($qty * $baseItemOriginalPrice - $item->getDiscountAmount()) * $_rulePct;

                if (!$rule->getDiscountQty() || $rule->getDiscountQty()>$qty) {
                    $discountPercent = min(100, $item->getDiscountPercent()+$rulePercent);
                    $item->setDiscountPercent($discountPercent);
                }
                break;
            case Mage_SalesRule_Model_Rule::TO_FIXED_ACTION:
                $quoteAmount = $quote->getStore()->convertPrice($rule->getDiscountAmount());
                $discountAmount    = $qty * ($itemPrice-$quoteAmount);
                $baseDiscountAmount = $qty * ($baseItemPrice-$rule->getDiscountAmount());
                //get discount for original price
                $originalDiscountAmount    = $qty * ($itemOriginalPrice-$quoteAmount);
                $baseOriginalDiscountAmount = $qty * ($baseItemOriginalPrice-$rule->getDiscountAmount());
                break;

            case Mage_SalesRule_Model_Rule::BY_FIXED_ACTION:
                $step = $rule->getDiscountStep();
                if ($step) {
                    $qty = floor($qty/$step)*$step;
                }
                $quoteAmount        = $quote->getStore()->convertPrice($rule->getDiscountAmount());
                $discountAmount     = $qty * $quoteAmount;
                $baseDiscountAmount = $qty * $rule->getDiscountAmount();
                break;

            case Mage_SalesRule_Model_Rule::CART_FIXED_ACTION:
                if (empty($this->_rulesItemTotals[$rule->getId()])) {
                    Mage::throwException(Mage::helper('salesrule')->__('Item totals are not set for rule.'));
                }

                /**
                 * prevent applying whole cart discount for every shipping order, but only for first order
                 */
                if ($quote->getIsMultiShipping()) {
                    $usedForAddressId = $this->getCartFixedRuleUsedForAddress($rule->getId());
                    if ($usedForAddressId && $usedForAddressId != $address->getId()) {
                        break;
                    } else {
                        $this->setCartFixedRuleUsedForAddress($rule->getId(), $address->getId());
                    }
                }
                $cartRules = $address->getCartFixedRules();
                if (!isset($cartRules[$rule->getId()])) {
                    $cartRules[$rule->getId()] = $rule->getDiscountAmount();
                }

                if ($cartRules[$rule->getId()] > 0) {
                    if ($this->_rulesItemTotals[$rule->getId()]['items_count'] <= 1) {
                        $quoteAmount = $quote->getStore()->convertPrice($cartRules[$rule->getId()]);
                        $baseDiscountAmount = min($baseItemPrice * $qty, $cartRules[$rule->getId()]);
                    } else {
                        $discountRate = $baseItemPrice * $qty /
                            $this->_rulesItemTotals[$rule->getId()]['base_items_price'];
                        $maximumItemDiscount = $rule->getDiscountAmount() * $discountRate;
                        $quoteAmount = $quote->getStore()->convertPrice($maximumItemDiscount);

                        $baseDiscountAmount = min($baseItemPrice * $qty, $maximumItemDiscount);
                        $this->_rulesItemTotals[$rule->getId()]['items_count']--;
                    }

                    $discountAmount = min($itemPrice * $qty, $quoteAmount);
                    $discountAmount = $quote->getStore()->roundPrice($discountAmount);
                    $baseDiscountAmount = $quote->getStore()->roundPrice($baseDiscountAmount);

                    //get discount for original price
                    $originalDiscountAmount = min($itemOriginalPrice * $qty, $quoteAmount);
                    $baseOriginalDiscountAmount = $quote->getStore()->roundPrice($baseItemOriginalPrice);

                    $cartRules[$rule->getId()] -= $baseDiscountAmount;
                }
                $address->setCartFixedRules($cartRules);

                break;

            case Mage_SalesRule_Model_Rule::BUY_X_GET_Y_ACTION:
                $x = $rule->getDiscountStep();
                $y = $rule->getDiscountAmount();
                if (!$x || $y > $x) {
                    break;
                }
                $buyAndDiscountQty = $x + $y;

                $fullRuleQtyPeriod = floor($qty / $buyAndDiscountQty);
                $freeQty  = $qty - $fullRuleQtyPeriod * $buyAndDiscountQty;

                $discountQty = $fullRuleQtyPeriod * $y;
                if ($freeQty > $x) {
                    $discountQty += $freeQty - $x;
                }

                $discountAmount    = $discountQty * $itemPrice;
                $baseDiscountAmount = $discountQty * $baseItemPrice;
                //get discount for original price
                $originalDiscountAmount    = $discountQty * $itemOriginalPrice;
                $baseOriginalDiscountAmount = $discountQty * $baseItemOriginalPrice;
                break;
        }

        $result = new Varien_Object(array(
            'discount_amount'      => $discountAmount,
            'base_discount_amount' => $baseDiscountAmount,
        ));
        Mage::dispatchEvent('salesrule_validator_process', array(
            'rule'    => $rule,
            'item'    => $item,
            'address' => $address,
            'quote'   => $quote,
            'qty'     => $qty,
            'result'  => $result,
        ));

        $discountAmount = $result->getDiscountAmount();
        $baseDiscountAmount = $result->getBaseDiscountAmount();

        $percentKey = $item->getDiscountPercent();
        /**
         * Process "delta" rounding
         */
        if ($percentKey) {
            $delta      = isset($this->_roundingDeltas[$percentKey]) ? $this->_roundingDeltas[$percentKey] : 0;
            $baseDelta  = isset($this->_baseRoundingDeltas[$percentKey])
                ? $this->_baseRoundingDeltas[$percentKey]
                : 0;
            $discountAmount += $delta;
            $baseDiscountAmount += $baseDelta;

            $this->_roundingDeltas[$percentKey]     = $discountAmount -
                $quote->getStore()->roundPrice($discountAmount);
            $this->_baseRoundingDeltas[$percentKey] = $baseDiscountAmount -
                $quote->getStore()->roundPrice($baseDiscountAmount);
            $discountAmount = $quote->getStore()->roundPrice($discountAmount);
            $baseDiscountAmount = $quote->getStore()->roundPrice($baseDiscountAmount);
        } else {
            $discountAmount     = $quote->getStore()->roundPrice($discountAmount);
            $baseDiscountAmount = $quote->getStore()->roundPrice($baseDiscountAmount);
        }

        /**
         * We can't use row total here because row total not include tax
         * Discount can be applied on price included tax
         */

        $itemDiscountAmount = $item->getDiscountAmount();
        $itemBaseDiscountAmount = $item->getBaseDiscountAmount();

        $discountAmount     = min($itemDiscountAmount + $discountAmount, $itemPrice * $qty);
        $baseDiscountAmount = min($itemBaseDiscountAmount + $baseDiscountAmount, $baseItemPrice * $qty);

        $item->setDiscountAmount($discountAmount);
        $item->setBaseDiscountAmount($baseDiscountAmount);

        $item->setOriginalDiscountAmount($originalDiscountAmount);
        $item->setBaseOriginalDiscountAmount($baseOriginalDiscountAmount);

        $appliedRuleIds[$rule->getRuleId()] = $rule->getRuleId();

        $this->_maintainAddressCouponCode($address, $rule);
        $this->_addDiscountDescription($address, $rule);

        if ($rule->getStopRulesProcessing()) {
            $this->_stopFurtherRules = true;
            break;
        }
    }

    $item->setAppliedRuleIds(join(',',$appliedRuleIds));
    $address->setAppliedRuleIds($this->mergeIds($address->getAppliedRuleIds(), $appliedRuleIds));
    $quote->setAppliedRuleIds($this->mergeIds($quote->getAppliedRuleIds(), $appliedRuleIds));

    return $this;
}