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<?php |
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/** |
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*@author: Nicolaas [at] Sunny Side Up . Co . Nz |
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*@description: |
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* works out the quantity available for each buyable |
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* based on the the number of items sold, recorded in BuyableStockOrderEntry, |
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* and manual corrections, recorded in BuyableStockManualUpdate. |
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* |
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* |
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**/ |
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class BuyableStockCalculatedQuantity extends DataObject |
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{ |
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private static $db = array( |
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"BaseQuantity" => "Int", |
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"BuyableID" => "Int", |
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"BuyableClassName" => "Varchar" |
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); |
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private static $has_many = array( |
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"BuyableStockOrderEntry" => "BuyableStockOrderEntry", |
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"BuyableStockManualUpdate" => "BuyableStockManualUpdate" |
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); |
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private static $defaults = array( |
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"BaseQuantity" => 0 |
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); |
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private static $casting = array( |
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"Name" => "Varchar", |
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"Buyable" => "DataObject", |
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"UnlimitedStock" => "Boolean" |
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); |
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//MODEL ADMIN STUFF |
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private static $searchable_fields = array( |
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"BaseQuantity" |
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); |
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private static $field_labels = array( |
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"BaseQuantity" => "Calculated Quantity On Hand", |
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"BuyableID" => "Buyable ID", |
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"LastEdited" => "Last Calculated" |
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); |
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private static $summary_fields = array( |
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"Name", |
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"BaseQuantity", |
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"LastEdited" |
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); |
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private static $indexes = array( |
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"BuyableID" => true, |
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"BuyableClassName" => true |
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); |
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private static $default_sort = "\"BuyableClassName\", \"BaseQuantity\" DESC"; |
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private static $singular_name = "Stock Calculated Quantity"; |
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private static $plural_name = "Stock Calculated Quantities"; |
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private static $calculation_done = array(); |
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public function canCreate($member = null) |
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{ |
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return false; |
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} |
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public function canEdit($member = null) |
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{ |
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return false; |
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} |
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public function canDelete($member = null) |
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{ |
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return false; |
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} |
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public function canView($member = null) |
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{ |
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return $this->canDoAnything(); |
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} |
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public function Link($action = "update") |
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{ |
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return "/update-stock/".$action."/".$this->ID."/"; |
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} |
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public function HistoryLink() |
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{ |
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return $this->Link("history"); |
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} |
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public function Buyable() |
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{ |
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return $this->getBuyable(); |
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} |
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public function getBuyable() |
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{ |
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if ($this->BuyableID && class_exists($this->BuyableClassName)) { |
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$className = $this->BuyableClassName; |
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return $className::get()->byID($this->BuyableID); |
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} |
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} |
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public function UnlimitedStock() |
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{ |
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return $this->geUnlimitedStock(); |
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} |
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public function getUnlimitedStock() |
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{ |
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if ($buyable = $this->getBuyable()) { |
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return $buyable->UnlimitedStock; |
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} |
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} |
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public function Name() |
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{ |
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return $this->getName(); |
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} |
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public function getName() |
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{ |
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if ($buyable = $this->getBuyable()) { |
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return $buyable->getTitle(); |
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} |
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return "no name"; |
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} |
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protected function canDoAnything($member = null) |
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{ |
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if ($buyable = $this->getBuyable()) { |
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if ($buyable->canEdit($member)) { |
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return true; |
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} |
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} |
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Security::permissionFailure($this, _t('Security.PERMFAILURE', ' This page is secured and you need administrator rights to access it. Enter your credentials below and we will send you right along.')); |
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} |
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public static function get_quantity_by_buyable($buyable) |
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{ |
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$value = 0; |
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$item = self::get_by_buyable($buyable); |
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if ($item) { |
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$value = $item->calculatedBaseQuantity(); |
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if ($value < 0) { |
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$value = 0; |
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} |
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} |
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return $value; |
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} |
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public static function get_by_buyable($buyable) |
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{ |
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$obj = BuyableStockCalculatedQuantity::get() |
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->filter( |
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array( |
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'BuyableID' => $buyable->ID, |
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'BuyableClassName' => $buyable->ClassName |
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) |
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) |
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->First(); |
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if ($obj) { |
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//do nothing |
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} else { |
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$obj = new BuyableStockCalculatedQuantity(); |
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$obj->BuyableID = $buyable->ID; |
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$obj->BuyableClassName = $buyable->ClassName; |
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} |
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if ($obj) { |
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if (isset($obj->ID) && $obj->exists() && $obj->UnlimitedStock == $buyable->UnlimitedStock) { |
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//do nothing |
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} else { |
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$obj->UnlimitedStock = $buyable->UnlimitedStock; |
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//we must write here to calculate quantities |
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$obj->write(); |
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} |
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return $obj; |
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} |
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user_error("Could not find / create BuyableStockCalculatedQuantity for buyable with ID / ClassName ".$buyableID."/".$buyableClassName, E_WARNING); |
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} |
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public function calculatedBaseQuantity() |
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{ |
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if (!$this->ID) { |
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return 0; |
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} |
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$actualQuantity = $this->workoutActualQuantity(); |
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if ($actualQuantity != $this->BaseQuantity) { |
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$this->BaseQuantity = $actualQuantity; |
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$this->write(); |
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return $actualQuantity; |
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} else { |
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return $this->getField("BaseQuantity"); |
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} |
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} |
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protected function calculatedBaseQuantities($buyables = null) |
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{ |
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if ($buyables) { |
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foreach ($buyables as $buyable) { |
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$buyableStockCalculatedQuantity = BuyableStockCalculatedQuantity::get_by_buyable($buyable); |
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if ($buyableStockCalculatedQuantity) { |
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$buyableStockCalculatedQuantity->calculatedBaseQuantity(); |
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} |
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} |
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} |
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} |
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/** |
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* TODO: change to submitted from CustomerCanEdit criteria |
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*/ |
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protected function workoutActualQuantity() |
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{ |
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$actualQuantity = 0; |
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if ($buyable = $this->getBuyable()) { |
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$query = Order::get() |
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->where(' |
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"OrderItem"."BuyableID" = '.(intval($this->BuyableID) - 0).' |
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AND |
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"OrderItem"."BuyableClassName" = \''.$this->BuyableClassName.'\' |
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AND |
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"OrderStep"."CustomerCanEdit" = 0 |
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AND |
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"Order"."ID" <> '.ShoppingCart::current_order()->ID.' |
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') |
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->innerJoin('OrderAttribute', '"OrderAttribute"."OrderID" = "Order"."ID"') |
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->innerJoin('OrderItem', '"OrderAttribute"."ID" = "OrderItem"."ID"') |
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->innerJoin('OrderStep', '"OrderStep"."ID" = "Order"."StatusID"'); |
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$amountPerOrder = array(); |
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if($query->count()) { |
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foreach ($query as $row) { |
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if(!isset($amountPerOrder[$row->OrderID])) { |
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$amountPerOrder[$row->OrderID] = 0; |
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} |
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$amountPerOrder[$row->OrderID] += $row->Quantity; |
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} |
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foreach($amountPerOrder as $orderID => $sum) { |
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if ($orderID && $sum) { |
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$buyableStockOrderEntry = BuyableStockOrderEntry::get() |
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->filter( |
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array( |
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'OrderID' => $orderID, |
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'ParentID' => $this->ID |
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) |
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) |
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->First(); |
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if ($buyableStockOrderEntry) { |
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//do nothing |
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} else { |
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$buyableStockOrderEntry = new BuyableStockOrderEntry(); |
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$buyableStockOrderEntry->OrderID = $orderID; |
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$buyableStockOrderEntry->ParentID = $this->ID; |
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$buyableStockOrderEntry->IncludeInCurrentCalculation = 1; |
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$buyableStockOrderEntry->Quantity = 0; |
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} |
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if ($buyableStockOrderEntry->Quantity != $sum) { |
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$buyableStockOrderEntry->Quantity = $sum; |
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$buyableStockOrderEntry->write(); |
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} |
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} |
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} |
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} |
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//find last adjustment |
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$latestManualUpdate = BuyableStockManualUpdate::get() |
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->filter(array('ParentID' => $this->ID)) |
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->sort(array('LastEdited' => 'DESC')) |
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->First(); |
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//nullify order quantities that were entered before last adjustment |
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if ($latestManualUpdate) { |
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$latestManualUpdateQuantity = $latestManualUpdate->Quantity; |
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DB::query("
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UPDATE \"BuyableStockOrderEntry\"
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SET \"IncludeInCurrentCalculation\" = 0
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WHERE
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\"LastEdited\" < '".$latestManualUpdate->LastEdited."'
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AND
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\"ParentID\" = ".$this->ID |
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); |
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} else { |
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$latestManualUpdateQuantity = 0; |
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} |
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//work out additional purchases |
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$orderQuantityToDeduct = BuyableStockOrderEntry::get() |
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->filter( |
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array( |
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'ParentID' => $this->ID, |
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'IncludeInCurrentCalculation' => 1 |
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) |
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)->sum('Quantity'); |
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if (!$orderQuantityToDeduct) { |
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$orderQuantityToDeduct = 0; |
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} |
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//work out base total |
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$actualQuantity = $latestManualUpdateQuantity - $orderQuantityToDeduct; |
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298
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if (isset($_GET["debug"])) { |
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echo "<hr />"; |
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echo $this->Name; |
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echo " | Manual SUM: ".$latestManualUpdateQuantity; |
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echo " | Order SUM: ".$orderQuantityToDeduct; |
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echo " | Total SUM: ".$this->BaseQuantity; |
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echo "<hr />"; |
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} |
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} |
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return $actualQuantity; |
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308
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|
} |
|
309
|
|
|
} |
|
310
|
|
|
|