PHP Mage_SalesRule_Model_Rule::getDiscountAmount方法代码示例

 public function getDiscountAmount()
 {
     if (substr($this->getCouponCode(), 0, 6) == 'points') {
         $step = Mage::getStoreConfig('rewardpoints/default/points_money', Mage::app()->getStore()->getId());
         return $this->getPointsAmt() / $step;
     }
     $test = new Mage_SalesRule_Model_Rule();
     if (method_exists($test, 'getDiscountAmount')) {
         return parent::getDiscountAmount();
     }
     if ($this->discount_amount) {
         return $this->discount_amount;
     }
 }

 /**
  * @param Mage_Sales_Model_Quote_Address         $address
  * @param Mage_SalesRule_Model_Rule              $rule
  * @param Mage_Sales_Model_Quote_Item_Abstract[] $allItems
  * @param Mage_Sales_Model_Quote_Item_Abstract[] $validItems
  *
  * @return bool
  */
 public function handle(Mage_Sales_Model_Quote_Address $address, Mage_SalesRule_Model_Rule $rule, array $allItems, array $validItems)
 {
     if ($rule->getSimpleAction() !== Mage_SalesRule_Model_Rule::BUY_X_GET_Y_ACTION) {
         return false;
     }
     $helper = $this->getHelper();
     // Get the X and Y values
     $x = max(floatval($rule->getDiscountStep()), 0.0);
     $y = max(floatval($rule->getDiscountAmount()), 0.0);
     if ($x <= 0.0 || $y <= 0.0) {
         return false;
     }
     // Get the discount step size
     $step = $x + $y;
     $applied = false;
     foreach ($validItems as $item) {
         // Get max quantity
         $qty = $helper->getItemRuleQty($item, $rule);
         // Apply discount step size limitation
         $qty = max($qty - ceil($qty / $step) * $x, 0.0);
         if ($qty <= 0.0) {
             continue;
         }
         $applied = true;
         // Get unit prices
         $itemPrice = $helper->getItemPrice($item);
         $itemBasePrice = $helper->getItemBasePrice($item);
         $itemOriginalPrice = $helper->getItemOriginalPrice($item);
         $itemBaseOriginalPrice = $helper->getItemBaseOriginalPrice($item);
         // Calculate discount amounts
         $discountAmount = $itemPrice * $qty;
         $originalDiscountAmount = $itemOriginalPrice * $qty;
         $baseDiscountAmount = $itemBasePrice * $qty;
         $baseOriginalDiscountAmount = $itemBaseOriginalPrice * $qty;
         // Round the discount amounts
         $discountAmount = $helper->round($discountAmount, $address->getQuote()->getQuoteCurrencyCode());
         $baseDiscountAmount = $helper->round($baseDiscountAmount, $address->getQuote()->getBaseCurrencyCode());
         $originalDiscountAmount = $helper->round($originalDiscountAmount, $address->getQuote()->getQuoteCurrencyCode());
         $baseOriginalDiscountAmount = $helper->round($baseOriginalDiscountAmount, $address->getQuote()->getBaseCurrencyCode());
         // Update the item discounts
         $item->setDiscountAmount($item->getDiscountAmount() + $discountAmount);
         $item->setBaseDiscountAmount($item->getBaseDiscountAmount() + $baseDiscountAmount);
         $item->setOriginalDiscountAmount($item->getOriginalDiscountAmount() + $originalDiscountAmount);
         $item->setBaseOriginalDiscountAmount($item->getBaseOriginalDiscountAmount() + $baseOriginalDiscountAmount);
     }
     return $applied;
 }

 /**
  * Make sure that a gift is only added once, create a free item and add it to the cart.
  *
  * @param Mage_Sales_Model_Quote $quote
  * @param Mage_Sales_Model_Quote_Item $item
  * @param Mage_SalesRule_Model_Rule $rule
  */
 protected static function _handleGift(Mage_Sales_Model_Quote $quote, Mage_Sales_Model_Quote_Item $item, Mage_SalesRule_Model_Rule $rule)
 {
     if ($rule->getIsApplied()) {
         return;
     }
     $qty = (int) $rule->getDiscountAmount();
     if ($qty) {
         $freeItem = self::_getFreeQuoteItem($quote, $rule->getGiftSku(), $item->getStoreId(), $qty);
         self::_addAndApply($quote, $freeItem, $rule);
     }
 }

 /**
  * @param Mage_Sales_Model_Quote_Address         $address
  * @param Mage_SalesRule_Model_Rule              $rule
  * @param Mage_Sales_Model_Quote_Item_Abstract[] $allItems
  * @param Mage_Sales_Model_Quote_Item_Abstract[] $validItems
  *
  * @return bool
  */
 public function handle(Mage_Sales_Model_Quote_Address $address, Mage_SalesRule_Model_Rule $rule, array $allItems, array $validItems)
 {
     // Skip invalid rule actions
     if ($rule->getSimpleAction() !== Mage_SalesRule_Model_Rule::CART_FIXED_ACTION) {
         return false;
     }
     // Skip if there are no valid items and it's not applied to shipping
     if (!count($validItems) && !$rule->getApplyToShipping()) {
         return false;
     }
     // Define a few helpful variables
     $helper = $this->getHelper();
     $quote = $address->getQuote();
     $store = $quote->getStore();
     // Total available discount amounts
     $baseDiscountAmount = $helper->round($rule->getDiscountAmount(), $quote->getBaseCurrencyCode());
     $discountAmount = $helper->round($store->convertPrice($baseDiscountAmount), $quote->getQuoteCurrencyCode());
     // Skip zero discounts
     if ($discountAmount <= 0.0) {
         return false;
     }
     $applied = false;
     // Pre-calculate the totals for all valid items
     $ruleTotalItemsPrice = 0;
     $ruleTotalBaseItemsPrice = 0;
     $itemPrices = [];
     foreach ($validItems as $item) {
         // Get max quantity (min or rule max qty or item qty)
         $qty = $helper->getItemRuleQty($item, $rule);
         // Skip zero quantity
         if ($qty <= 0.0) {
             continue;
         }
         // Get unit price
         $itemPrice = $helper->getItemPrice($item);
         $itemBasePrice = $helper->getItemBasePrice($item);
         // Get row price
         $itemRowPrice = $itemPrice * $item->getTotalQty();
         $itemBaseRowPrice = $itemBasePrice * $item->getTotalQty();
         // Get discountable price
         $itemDiscountablePrice = $itemPrice * $qty;
         $itemBaseDiscountablePrice = $itemBasePrice * $qty;
         // Save price data for later
         $itemPrices[$item->getId()] = [$itemPrice, $itemBasePrice, $itemRowPrice, $itemBaseRowPrice, $itemDiscountablePrice, $itemBaseDiscountablePrice];
         // Add row prices to running totals
         $ruleTotalItemsPrice += $itemDiscountablePrice;
         $ruleTotalBaseItemsPrice += $itemBaseDiscountablePrice;
     }
     $startDiscountAmount = $discountAmount;
     $startBaseDiscountAmount = $baseDiscountAmount;
     foreach ($validItems as $item) {
         // Skip the skipped items
         if (!isset($itemPrices[$item->getId()])) {
             continue;
         }
         // Flag indicating the rule was applied
         $applied = true;
         // Extract the pre-calculate price data
         list($itemPrice, $itemBasePrice, $itemRowPrice, $itemBaseRowPrice, $itemDiscountablePrice, $itemBaseDiscountablePrice) = $itemPrices[$item->getId()];
         // Calculate remaining row amount
         $itemRemainingRowPrice = max($itemRowPrice - $item->getDiscountAmount(), 0);
         $itemRemainingBaseRowPrice = max($itemBaseRowPrice - $item->getBaseDiscountAmount(), 0);
         // Calculate price factor
         $priceFactor = $itemDiscountablePrice / $ruleTotalItemsPrice;
         $basePriceFactor = $itemBaseDiscountablePrice / $ruleTotalBaseItemsPrice;
         // Calculate (and round) the item discount amount
         $itemDiscountAmount = $helper->round($startDiscountAmount * $priceFactor, $quote->getQuoteCurrencyCode());
         $itemBaseDiscountAmount = $helper->round($startBaseDiscountAmount * $basePriceFactor, $quote->getBaseCurrencyCode());
         // Ensure discount does not exceed the remaining discount, max item discount, or remaining row price
         $itemDiscountAmount = max(min($itemDiscountAmount, $discountAmount, $itemDiscountablePrice, $itemRemainingRowPrice), 0.0);
         $itemBaseDiscountAmount = max(min($itemBaseDiscountAmount, $baseDiscountAmount, $itemBaseDiscountablePrice, $itemRemainingBaseRowPrice), 0.0);
         // Update the item discount
         $item->setDiscountAmount($item->getDiscountAmount() + $itemDiscountAmount);
         $item->setBaseDiscountAmount($item->getBaseDiscountAmount() + $itemBaseDiscountAmount);
         // This is a bit wonky, but needed for taxes
         $item->setOriginalDiscountAmount($item->getOriginalDiscountAmount() + $itemDiscountAmount);
         $item->setBaseOriginalDiscountAmount($item->getBaseOriginalDiscountAmount() + $itemBaseDiscountAmount);
         // Subtract from the total remaining discount amount
         $discountAmount -= $itemDiscountAmount;
         $baseDiscountAmount -= $itemBaseDiscountAmount;
     }
     if ($rule->getApplyToShipping()) {
         $shippingAmount = $address->getShippingAmountForDiscount();
         $baseShippingAmount = $address->getBaseShippingAmountForDiscount();
         if ($shippingAmount === null || $baseShippingAmount === null) {
             $shippingAmount = $address->getShippingAmount();
             $baseShippingAmount = $address->getBaseShippingAmount();
         }
         $shippingAmount -= $address->getShippingDiscountAmount();
         $baseShippingAmount -= $address->getBaseShippingDiscountAmount();
         $shippingDiscountAmount = max(min($discountAmount, $shippingAmount), 0.0);
         $shippingBaseDiscountAmount = max(min($baseDiscountAmount, $baseShippingAmount), 0.0);
//.........这里部分代码省略.........

 /**
  * @param Mage_Sales_Model_Quote_Address         $address
  * @param Mage_SalesRule_Model_Rule              $rule
  * @param Mage_Sales_Model_Quote_Item_Abstract[] $allItems
  * @param Mage_Sales_Model_Quote_Item_Abstract[] $validItems
  *
  * @return bool
  */
 public function handle(Mage_Sales_Model_Quote_Address $address, Mage_SalesRule_Model_Rule $rule, array $allItems, array $validItems)
 {
     // Skip invalid rule actions
     if ($rule->getSimpleAction() !== Mage_SalesRule_Model_Rule::BY_FIXED_ACTION) {
         return false;
     }
     // Skip if there are no valid items and it's not applied to shipping
     if (!count($validItems) && !$rule->getApplyToShipping()) {
         return false;
     }
     // Define a few helpful variables
     $helper = $this->getHelper();
     $quote = $address->getQuote();
     $store = $quote->getStore();
     // Discount amount
     $baseDiscountAmount = $helper->round($rule->getDiscountAmount(), $quote->getBaseCurrencyCode());
     $discountAmount = $helper->round($store->convertPrice($baseDiscountAmount), $quote->getQuoteCurrencyCode());
     // Skip zero discounts
     if ($discountAmount <= 0.0) {
         return false;
     }
     // Get the discount step size
     $step = max(floatval($rule->getDiscountStep()), 0.0);
     $applied = false;
     foreach ($validItems as $item) {
         // Get max quantity
         $qty = $helper->getItemRuleQty($item, $rule);
         // Apply discount step size limitation
         if ($step > 0.0) {
             $qty = floor($qty / $step) * $step;
         }
         // Skip zero quantities
         if ($qty <= 0.0) {
             continue;
         }
         $applied = true;
         // Calculate discount amounts
         $discountAmount = $discountAmount * $qty;
         $baseDiscountAmount = $baseDiscountAmount * $qty;
         $originalDiscountAmount = $discountAmount * $qty;
         $baseOriginalDiscountAmount = $baseDiscountAmount * $qty;
         // Round the discount amounts
         $discountAmount = $helper->round($discountAmount, $address->getQuote()->getQuoteCurrencyCode());
         $baseDiscountAmount = $helper->round($baseDiscountAmount, $address->getQuote()->getBaseCurrencyCode());
         $originalDiscountAmount = $helper->round($originalDiscountAmount, $address->getQuote()->getQuoteCurrencyCode());
         $baseOriginalDiscountAmount = $helper->round($baseOriginalDiscountAmount, $address->getQuote()->getBaseCurrencyCode());
         // Update the item discounts
         $item->setDiscountAmount($item->getDiscountAmount() + $discountAmount);
         $item->setBaseDiscountAmount($item->getBaseDiscountAmount() + $baseDiscountAmount);
         $item->setOriginalDiscountAmount($item->getOriginalDiscountAmount() + $originalDiscountAmount);
         $item->setBaseOriginalDiscountAmount($item->getBaseOriginalDiscountAmount() + $baseOriginalDiscountAmount);
     }
     if ($rule->getApplyToShipping()) {
         $shippingAmount = $address->getShippingAmountForDiscount();
         $baseShippingAmount = $address->getBaseShippingAmountForDiscount();
         if ($shippingAmount === null || $baseShippingAmount === null) {
             $shippingAmount = $address->getShippingAmount();
             $baseShippingAmount = $address->getBaseShippingAmount();
         }
         $shippingAmount -= $address->getShippingDiscountAmount();
         $baseShippingAmount -= $address->getBaseShippingDiscountAmount();
         $shippingDiscountAmount = min(max($discountAmount, 0.0), $shippingAmount);
         $shippingBaseDiscountAmount = min(max($baseDiscountAmount, 0.0), $baseShippingAmount);
         $address->setShippingDiscountAmount($address->getShippingDiscountAmount() + $shippingDiscountAmount);
         $address->setBaseShippingDiscountAmount($address->getBaseShippingDiscountAmount() + $shippingBaseDiscountAmount);
         $applied = true;
     }
     return $applied;
 }

 /**
  * Get the items the need to be discounted based on the category ids or root category and escape bundle products from calculation
  *
  * @author Mohamed Meabed <mo.meabed@gmail.com>
  *
  * @param Mage_SalesRule_Model_Rule           $rule
  * @param Mage_Sales_Model_Quote_Address      $address
  * @param Mage_Sales_Model_Quote_Address_Item $_addressItem
  *
  * @return array
  */
 public function getItemsToDiscount($rule, $address, $_addressItem)
 {
     $conditions = $rule->getConditions()->getConditions();
     $allowedCatIds = null;
     $parsedCats = array();
     $condition = null;
     $_productCategories = array();
     $cartCategories = array();
     $catToProcess = array();
     $isRootCategory = false;
     $validCondition = false;
     $rootCategoryId = Mage::app()->getStore()->getRootCategoryId();
     $ignoreType = array('bundle');
     /** @var Mage_SalesRule_Model_Rule_Condition_Address $c */
     foreach ($conditions as $c) {
         if (!$allowedCatIds && !$condition && $c->getData('attribute')) {
             $condition = $c;
             $val = $c->getValueParsed();
             if (is_string($val)) {
                 $parsedCats = explode(',', $val);
             }
             if (is_array($val)) {
                 $parsedCats = $val;
             }
             if ($parsedCats && is_array($parsedCats)) {
                 if (in_array($rootCategoryId, $parsedCats)) {
                     $isRootCategory = true;
                     $_productCategories = array($rootCategoryId);
                 }
             }
         }
     }
     $items = $address->getAllVisibleItems();
     $discountStep = $rule->getDiscountStep();
     $i = 0;
     /** @var Mage_Sales_Model_Quote_Item $item */
     foreach ($items as $item) {
         // Escape bundles
         if (in_array($ignoreType, $item->getProductType())) {
             continue;
         }
         if (!$isRootCategory) {
             /** @var Mage_Catalog_Model_Product $_product */
             $_product = Mage::getModel('catalog/product')->load($item->getProductId());
             $_productCategories = $_product->getCategoryIds();
         }
         $validCondition = $condition->validateAttribute($_productCategories);
         $cat = array_shift($_productCategories);
         if ($isRootCategory || $validCondition) {
             for ($x = 0; $x < $item->getQty(); $x++) {
                 $cartCategories[$cat][$i]['itemId'] = $item->getId();
                 $cartCategories[$cat][$i]['qty'] = $item->getQty();
                 $cartCategories[$cat][$i]['price'] = $item->getPrice();
                 $cartCategories[$cat][$i]['item'] = $item;
                 $i++;
                 if (count($cartCategories[$cat]) >= $discountStep) {
                     $catToProcess[$cat] = $cat;
                 }
             }
         }
     }
     $x = $rule->getDiscountStep();
     $y = $rule->getDiscountAmount();
     $return = array();
     foreach ($catToProcess as $cat) {
         $catItems = $cartCategories[$cat];
         $this->aaSort($catItems, 'price');
         $qtyTobeDiscounted = (int) ($i / $discountStep);
         $qtyTobeDiscounted *= $y;
         for ($j = 0; $j < $qtyTobeDiscounted; $j++) {
             $itemDisc = array_pop($catItems);
             /** @var Mage_Sales_Model_Quote_Address_Item $salesItem */
             $salesItem = $itemDisc['item'];
             if ($salesItem && !isset($return[$salesItem->getId()])) {
                 $return[$salesItem->getId()] = 0;
             }
             $return[$salesItem->getId()]++;
         }
     }
     return $return;
 }

 /**
  * @param Mage_Sales_Model_Quote_Address         $address
  * @param Mage_SalesRule_Model_Rule              $rule
  * @param Mage_Sales_Model_Quote_Item_Abstract[] $allItems
  * @param Mage_Sales_Model_Quote_Item_Abstract[] $validItems
  *
  * @return bool
  */
 public function handle(Mage_Sales_Model_Quote_Address $address, Mage_SalesRule_Model_Rule $rule, array $allItems, array $validItems)
 {
     // Skip invalid rule actions
     if ($rule->getSimpleAction() !== Mage_SalesRule_Model_Rule::BY_PERCENT_ACTION) {
         return false;
     }
     // Skip if there are no valid items and it's not applied to shipping
     if (!count($validItems) && !$rule->getApplyToShipping()) {
         return false;
     }
     // Define a few helpful variables
     $helper = $this->getHelper();
     $quote = $address->getQuote();
     $store = $quote->getStore();
     // Get discount percent
     $discountPercent = max(min($rule->getDiscountAmount(), 100.0), 0.0);
     $discountMultiplier = $discountPercent / 100;
     // Skip zero discounts
     if ($discountPercent <= 0.0) {
         return false;
     }
     // Get the discount step size
     $step = max(floatval($rule->getDiscountStep()), 0.0);
     $applied = false;
     foreach ($validItems as $item) {
         // Get max quantity
         $qty = $helper->getItemRuleQty($item, $rule);
         // Apply discount step size limitation
         if ($step > 0.0) {
             $qty = floor($qty / $step) * $step;
         }
         // Skip zero quantities
         if ($qty <= 0.0) {
             continue;
         }
         $applied = true;
         // Get row prices
         $itemRowPrice = $helper->getItemPrice($item) * $qty;
         $itemBaseRowPrice = $helper->getItemBasePrice($item) * $qty;
         $itemOriginalRowPrice = $helper->getItemOriginalPrice($item) * $qty;
         $itemBaseOriginalRowPrice = $helper->getItemBaseOriginalPrice($item) * $qty;
         // Calculate discount amounts
         $discountAmount = ($itemRowPrice - $item->getDiscountAmount()) * $discountMultiplier;
         $baseDiscountAmount = ($itemBaseRowPrice - $item->getBaseDiscountAmount()) * $discountMultiplier;
         $originalDiscountAmount = ($itemOriginalRowPrice - $item->getOriginalDiscountAmount()) * $discountMultiplier;
         $baseOriginalDiscountAmount = ($itemBaseOriginalRowPrice - $item->getBaseOriginalDiscountAmount()) * $discountMultiplier;
         // Round the discount amounts
         $discountAmount = $helper->round($discountAmount, $address->getQuote()->getQuoteCurrencyCode());
         $baseDiscountAmount = $helper->round($baseDiscountAmount, $address->getQuote()->getBaseCurrencyCode());
         $originalDiscountAmount = $helper->round($originalDiscountAmount, $address->getQuote()->getQuoteCurrencyCode());
         $baseOriginalDiscountAmount = $helper->round($baseOriginalDiscountAmount, $address->getQuote()->getBaseCurrencyCode());
         // Update the item discounts
         $item->setDiscountAmount($item->getDiscountAmount() + $discountAmount);
         $item->setBaseDiscountAmount($item->getBaseDiscountAmount() + $baseDiscountAmount);
         $item->setOriginalDiscountAmount($item->getOriginalDiscountAmount() + $originalDiscountAmount);
         $item->setBaseOriginalDiscountAmount($item->getBaseOriginalDiscountAmount() + $baseOriginalDiscountAmount);
         // Update the item percent discount value
         $discountPercent = min(100, $item->getDiscountPercent() + $discountPercent);
         $item->setDiscountPercent($discountPercent);
     }
     if ($rule->getApplyToShipping()) {
         $shippingAmount = $address->getShippingAmountForDiscount();
         $baseShippingAmount = $address->getBaseShippingAmountForDiscount();
         if ($shippingAmount === null || $baseShippingAmount === null) {
             $shippingAmount = $address->getShippingAmount();
             $baseShippingAmount = $address->getBaseShippingAmount();
         }
         // Subtract existing discounts
         $shippingAmount -= $address->getShippingDiscountAmount();
         $baseShippingAmount -= $address->getBaseShippingDiscountAmount();
         // Calculate and round discounts
         $shippingDiscountAmount = $helper->round($shippingAmount * $discountMultiplier, $address->getQuote()->getQuoteCurrencyCode());
         $shippingBaseDiscountAmount = $helper->round($baseShippingAmount * $discountMultiplier, $address->getQuote()->getBaseCurrencyCode());
         // Make sure the discount isn't more that the remaining amount
         $shippingDiscountAmount = min(max($shippingDiscountAmount, 0.0), $shippingAmount);
         $shippingBaseDiscountAmount = min(max($shippingBaseDiscountAmount, 0.0), $baseShippingAmount);
         // Store discounts
         $address->setShippingDiscountAmount($address->getShippingDiscountAmount() + $shippingDiscountAmount);
         $address->setBaseShippingDiscountAmount($address->getBaseShippingDiscountAmount() + $shippingBaseDiscountAmount);
         $applied = true;
     }
     return $applied;
 }