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<?php |
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namespace yii2mod\cart\storage; |
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use Yii; |
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use yii\base\BaseObject; |
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use yii\base\InvalidConfigException; |
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use yii\db\Connection; |
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use yii\db\Query; |
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use yii\web\User; |
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use yii2mod\cart\Cart; |
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/** |
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* Class DatabaseStorage is a database adapter for cart data storage. |
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* |
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* If userComponent is set, it tries to call getId() from the component and use the result as user identifier. If it |
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* fails, or if $userComponent is not set, it will use sessionId as user identifier |
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* |
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* @package yii2mod\cart\storage |
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*/ |
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class DatabaseStorage extends BaseObject implements StorageInterface |
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{ |
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/** |
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* @var string Name of the user component |
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*/ |
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public $userComponent = 'user'; |
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/** |
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* @var string Name of the database component |
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*/ |
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public $dbComponent = 'db'; |
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/** |
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* @var string Name of the cart table |
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*/ |
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public $table = '{{%cart}}'; |
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/** |
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* @var string Name of the |
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*/ |
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public $idField = 'sessionId'; |
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/** |
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* @var string Name of the field holding serialized session data |
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*/ |
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public $dataField = 'cartData'; |
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/** |
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* @var bool If set to true, empty cart entries will be deleted |
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*/ |
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public $deleteIfEmpty = false; |
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/** |
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* @var Connection |
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*/ |
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private $_db; |
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/** |
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* @var User |
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*/ |
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private $_user; |
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/** |
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* @inheritdoc |
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*/ |
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public function init() |
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{ |
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parent::init(); |
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$this->_db = Yii::$app->get($this->dbComponent); |
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if ($this->userComponent !== null) { |
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$this->_user = Yii::$app->get($this->userComponent); |
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} |
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if ($this->table === null) { |
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throw new InvalidConfigException('Please specify "table" in cart configuration'); |
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} |
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} |
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/** |
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* @param Cart $cart |
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* |
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* @return mixed |
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*/ |
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public function load(Cart $cart) |
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{ |
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$items = []; |
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$identifier = $this->getIdentifier(Yii::$app->session->getId()); |
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$query = new Query(); |
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$query->select($this->dataField) |
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->from($this->table) |
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->where([$this->idField => $identifier]); |
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if ($data = $query->createCommand($this->_db)->queryScalar()) { |
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$items = unserialize($data); |
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} |
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return $items; |
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} |
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/** |
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* @param int $default |
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* |
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* @return int |
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*/ |
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protected function getIdentifier($default) |
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{ |
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$id = $default; |
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if ($this->_user instanceof User && !$this->_user->getIsGuest()) { |
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$id = $this->_user->getId(); |
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} |
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return $id; |
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} |
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/** |
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* @param \yii2mod\cart\Cart $cart |
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*/ |
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public function save(Cart $cart) |
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{ |
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$identifier = $this->getIdentifier(Yii::$app->session->getId()); |
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$items = $cart->getItems(); |
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$sessionData = serialize($items); |
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$command = $this->_db->createCommand(); |
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if (empty($items) && true === $this->deleteIfEmpty) { |
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$command->delete($this->table, [$this->idField => $identifier]); |
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} else { |
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$command->setSql(" |
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REPLACE {{{$this->table}}} |
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SET |
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{{{$this->dataField}}} = :val, |
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{{{$this->idField}}} = :id |
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")->bindValues([ |
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':id' => $identifier, |
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':val' => $sessionData, |
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]); |
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} |
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$command->execute(); |
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} |
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/** |
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* Assigns cart to logged in user |
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* |
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* @param $sourceId |
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* @param $destinationId |
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*/ |
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public function reassign($sourceId, $destinationId) |
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{ |
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$command = $this->_db->createCommand(); |
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$command->delete($this->table, [$this->idField => $destinationId])->execute(); |
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$command->update($this->table, [$this->idField => $destinationId], [$this->idField => $sourceId])->execute(); |
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} |
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} |
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yii2mod /
yii2-cart
