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<?php |
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/** |
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* @link http://www.yiiframework.com/ |
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* @copyright Copyright (c) 2008 Yii Software LLC |
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* @license http://www.yiiframework.com/license/ |
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*/ |
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namespace yii\db; |
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use yii\base\InvalidConfigException; |
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use yii\base\InvalidParamException; |
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/** |
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* ActiveRelationTrait implements the common methods and properties for active record relational queries. |
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* |
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* @author Qiang Xue <[email protected]> |
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* @author Carsten Brandt <[email protected]> |
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* @since 2.0 |
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* |
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* @method ActiveRecordInterface one() |
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* @method ActiveRecordInterface[] all() |
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* @property ActiveRecord $modelClass |
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*/ |
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trait ActiveRelationTrait |
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{ |
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/** |
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* @var bool whether this query represents a relation to more than one record. |
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* This property is only used in relational context. If true, this relation will |
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* populate all query results into AR instances using [[Query::all()|all()]]. |
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* If false, only the first row of the results will be retrieved using [[Query::one()|one()]]. |
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*/ |
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public $multiple; |
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/** |
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* @var ActiveRecord the primary model of a relational query. |
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* This is used only in lazy loading with dynamic query options. |
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*/ |
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public $primaryModel; |
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/** |
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* @var array the columns of the primary and foreign tables that establish a relation. |
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* The array keys must be columns of the table for this relation, and the array values |
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* must be the corresponding columns from the primary table. |
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* Do not prefix or quote the column names as this will be done automatically by Yii. |
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* This property is only used in relational context. |
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*/ |
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public $link; |
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/** |
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* @var array|object the query associated with the junction table. Please call [[via()]] |
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* to set this property instead of directly setting it. |
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* This property is only used in relational context. |
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* @see via() |
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*/ |
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public $via; |
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/** |
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* @var string the name of the relation that is the inverse of this relation. |
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* For example, an order has a customer, which means the inverse of the "customer" relation |
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* is the "orders", and the inverse of the "orders" relation is the "customer". |
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* If this property is set, the primary record(s) will be referenced through the specified relation. |
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* For example, `$customer->orders[0]->customer` and `$customer` will be the same object, |
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* and accessing the customer of an order will not trigger new DB query. |
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* This property is only used in relational context. |
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* @see inverseOf() |
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*/ |
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public $inverseOf; |
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/** |
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* Clones internal objects. |
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*/ |
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public function __clone() |
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{ |
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parent::__clone(); |
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// make a clone of "via" object so that the same query object can be reused multiple times |
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if (is_object($this->via)) { |
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$this->via = clone $this->via; |
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} elseif (is_array($this->via)) { |
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$this->via = [$this->via[0], clone $this->via[1]]; |
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} |
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} |
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/** |
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* Specifies the relation associated with the junction table. |
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* |
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* Use this method to specify a pivot record/table when declaring a relation in the [[ActiveRecord]] class: |
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* |
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* ```php |
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* class Order extends ActiveRecord |
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* { |
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* public function getOrderItems() { |
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* return $this->hasMany(OrderItem::className(), ['order_id' => 'id']); |
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* } |
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* |
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* public function getItems() { |
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* return $this->hasMany(Item::className(), ['id' => 'item_id']) |
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* ->via('orderItems'); |
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* } |
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* } |
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* ``` |
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* |
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* @param string $relationName the relation name. This refers to a relation declared in [[primaryModel]]. |
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* @param callable $callable a PHP callback for customizing the relation associated with the junction table. |
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* Its signature should be `function($query)`, where `$query` is the query to be customized. |
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* @return $this the relation object itself. |
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*/ |
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public function via($relationName, callable $callable = null) |
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{ |
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$relation = $this->primaryModel->getRelation($relationName); |
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$this->via = [$relationName, $relation]; |
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if ($callable !== null) { |
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call_user_func($callable, $relation); |
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} |
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return $this; |
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} |
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/** |
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* Sets the name of the relation that is the inverse of this relation. |
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* For example, an order has a customer, which means the inverse of the "customer" relation |
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* is the "orders", and the inverse of the "orders" relation is the "customer". |
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* If this property is set, the primary record(s) will be referenced through the specified relation. |
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* For example, `$customer->orders[0]->customer` and `$customer` will be the same object, |
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* and accessing the customer of an order will not trigger a new DB query. |
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* |
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* Use this method when declaring a relation in the [[ActiveRecord]] class: |
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* |
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* ```php |
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* public function getOrders() |
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* { |
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* return $this->hasMany(Order::className(), ['customer_id' => 'id'])->inverseOf('customer'); |
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* } |
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* ``` |
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* |
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* @param string $relationName the name of the relation that is the inverse of this relation. |
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* @return $this the relation object itself. |
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*/ |
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public function inverseOf($relationName) |
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{ |
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$this->inverseOf = $relationName; |
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return $this; |
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} |
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/** |
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* Finds the related records for the specified primary record. |
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* This method is invoked when a relation of an ActiveRecord is being accessed in a lazy fashion. |
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* @param string $name the relation name |
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* @param ActiveRecordInterface|BaseActiveRecord $model the primary model |
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* @return mixed the related record(s) |
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* @throws InvalidParamException if the relation is invalid |
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*/ |
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public function findFor($name, $model) |
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{ |
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if (method_exists($model, 'get' . $name)) { |
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$method = new \ReflectionMethod($model, 'get' . $name); |
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$realName = lcfirst(substr($method->getName(), 3)); |
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if ($realName !== $name) { |
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throw new InvalidParamException('Relation names are case sensitive. ' . get_class($model) . " has a relation named \"$realName\" instead of \"$name\"."); |
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} |
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} |
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return $this->multiple ? $this->all() : $this->one(); |
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} |
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/** |
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* If applicable, populate the query's primary model into the related records' inverse relationship. |
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* @param array $result the array of related records as generated by [[populate()]] |
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* @since 2.0.9 |
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*/ |
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private function addInverseRelations(&$result) |
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{ |
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if ($this->inverseOf === null) { |
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return; |
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} |
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foreach ($result as $i => $relatedModel) { |
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if ($relatedModel instanceof ActiveRecordInterface) { |
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if (!isset($inverseRelation)) { |
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$inverseRelation = $relatedModel->getRelation($this->inverseOf); |
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} |
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$relatedModel->populateRelation($this->inverseOf, $inverseRelation->multiple ? [$this->primaryModel] : $this->primaryModel); |
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} else { |
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if (!isset($inverseRelation)) { |
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/* @var $modelClass ActiveRecordInterface */ |
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$modelClass = $this->modelClass; |
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$inverseRelation = $modelClass::instance()->getRelation($this->inverseOf); |
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} |
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$result[$i][$this->inverseOf] = $inverseRelation->multiple ? [$this->primaryModel] : $this->primaryModel; |
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} |
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} |
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} |
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/** |
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* Finds the related records and populates them into the primary models. |
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* @param string $name the relation name |
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* @param array $primaryModels primary models |
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* @return array the related models |
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* @throws InvalidConfigException if [[link]] is invalid |
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*/ |
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public function populateRelation($name, &$primaryModels) |
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{ |
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if (!is_array($this->link)) { |
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throw new InvalidConfigException('Invalid link: it must be an array of key-value pairs.'); |
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} |
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if ($this->via instanceof self) { |
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// via junction table |
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/* @var $viaQuery ActiveRelationTrait */ |
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$viaQuery = $this->via; |
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$viaModels = $viaQuery->findJunctionRows($primaryModels); |
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$this->filterByModels($viaModels); |
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} elseif (is_array($this->via)) { |
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// via relation |
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/* @var $viaQuery ActiveRelationTrait|ActiveQueryTrait */ |
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list($viaName, $viaQuery) = $this->via; |
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if ($viaQuery->asArray === null) { |
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// inherit asArray from primary query |
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$viaQuery->asArray($this->asArray); |
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} |
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$viaQuery->primaryModel = null; |
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$viaModels = $viaQuery->populateRelation($viaName, $primaryModels); |
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$this->filterByModels($viaModels); |
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} else { |
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$this->filterByModels($primaryModels); |
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} |
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if (!$this->multiple && count($primaryModels) === 1) { |
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$model = $this->one(); |
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$primaryModel = reset($primaryModels); |
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if ($primaryModel instanceof ActiveRecordInterface) { |
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$primaryModel->populateRelation($name, $model); |
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} else { |
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$primaryModels[key($primaryModels)][$name] = $model; |
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} |
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if ($this->inverseOf !== null) { |
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$this->populateInverseRelation($primaryModels, [$model], $name, $this->inverseOf); |
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} |
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return [$model]; |
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} |
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// https://github.com/yiisoft/yii2/issues/3197 |
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// delay indexing related models after buckets are built |
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$indexBy = $this->indexBy; |
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$this->indexBy = null; |
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$models = $this->all(); |
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if (isset($viaModels, $viaQuery)) { |
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$buckets = $this->buildBuckets($models, $this->link, $viaModels, $viaQuery->link); |
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} else { |
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$buckets = $this->buildBuckets($models, $this->link); |
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} |
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$this->indexBy = $indexBy; |
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if ($this->indexBy !== null && $this->multiple) { |
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$buckets = $this->indexBuckets($buckets, $this->indexBy); |
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} |
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$link = array_values(isset($viaQuery) ? $viaQuery->link : $this->link); |
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foreach ($primaryModels as $i => $primaryModel) { |
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if ($this->multiple && count($link) === 1 && is_array($keys = $primaryModel[reset($link)])) { |
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$value = []; |
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foreach ($keys as $key) { |
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$key = $this->normalizeModelKey($key); |
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if (isset($buckets[$key])) { |
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if ($this->indexBy !== null) { |
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// if indexBy is set, array_merge will cause renumbering of numeric array |
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foreach ($buckets[$key] as $bucketKey => $bucketValue) { |
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$value[$bucketKey] = $bucketValue; |
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} |
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} else { |
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$value = array_merge($value, $buckets[$key]); |
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} |
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} |
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} |
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} else { |
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$key = $this->getModelKey($primaryModel, $link); |
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$value = isset($buckets[$key]) ? $buckets[$key] : ($this->multiple ? [] : null); |
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} |
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if ($primaryModel instanceof ActiveRecordInterface) { |
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$primaryModel->populateRelation($name, $value); |
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} else { |
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$primaryModels[$i][$name] = $value; |
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} |
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} |
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if ($this->inverseOf !== null) { |
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$this->populateInverseRelation($primaryModels, $models, $name, $this->inverseOf); |
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} |
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return $models; |
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} |
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/** |
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* @param ActiveRecordInterface[] $primaryModels primary models |
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* @param ActiveRecordInterface[] $models models |
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* @param string $primaryName the primary relation name |
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* @param string $name the relation name |
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*/ |
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private function populateInverseRelation(&$primaryModels, $models, $primaryName, $name) |
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{ |
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if (empty($models) || empty($primaryModels)) { |
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return; |
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} |
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$model = reset($models); |
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/* @var $relation ActiveQueryInterface|ActiveQuery */ |
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if ($model instanceof ActiveRecordInterface) { |
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$relation = $model->getRelation($name); |
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} else { |
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/* @var $modelClass ActiveRecordInterface */ |
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$modelClass = $this->modelClass; |
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$relation = $modelClass::instance()->getRelation($name); |
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} |
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9 |
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if ($relation->multiple) { |
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$buckets = $this->buildBuckets($primaryModels, $relation->link, null, null, false); |
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6 |
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if ($model instanceof ActiveRecordInterface) { |
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foreach ($models as $model) { |
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$key = $this->getModelKey($model, $relation->link); |
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$model->populateRelation($name, isset($buckets[$key]) ? $buckets[$key] : []); |
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} |
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} else { |
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3 |
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foreach ($primaryModels as $i => $primaryModel) { |
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3 |
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if ($this->multiple) { |
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foreach ($primaryModel as $j => $m) { |
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$key = $this->getModelKey($m, $relation->link); |
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$primaryModels[$i][$j][$name] = isset($buckets[$key]) ? $buckets[$key] : []; |
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} |
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} elseif (!empty($primaryModel[$primaryName])) { |
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$key = $this->getModelKey($primaryModel[$primaryName], $relation->link); |
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$primaryModels[$i][$primaryName][$name] = isset($buckets[$key]) ? $buckets[$key] : []; |
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} |
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} |
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} |
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} else { |
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6 |
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if ($this->multiple) { |
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6 |
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foreach ($primaryModels as $i => $primaryModel) { |
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6 |
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foreach ($primaryModel[$primaryName] as $j => $m) { |
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6 |
|
if ($m instanceof ActiveRecordInterface) { |
336
|
6 |
|
$m->populateRelation($name, $primaryModel); |
337
|
|
|
} else { |
338
|
6 |
|
$primaryModels[$i][$primaryName][$j][$name] = $primaryModel; |
339
|
|
|
} |
340
|
|
|
} |
341
|
|
|
} |
342
|
|
|
} else { |
343
|
|
|
foreach ($primaryModels as $i => $primaryModel) { |
344
|
|
|
if ($primaryModels[$i][$primaryName] instanceof ActiveRecordInterface) { |
345
|
|
|
$primaryModels[$i][$primaryName]->populateRelation($name, $primaryModel); |
346
|
|
|
} elseif (!empty($primaryModels[$i][$primaryName])) { |
347
|
|
|
$primaryModels[$i][$primaryName][$name] = $primaryModel; |
348
|
|
|
} |
349
|
|
|
} |
350
|
|
|
} |
351
|
|
|
} |
352
|
9 |
|
} |
353
|
|
|
|
354
|
|
|
/** |
355
|
|
|
* @param array $models |
356
|
|
|
* @param array $link |
357
|
|
|
* @param array $viaModels |
358
|
|
|
* @param array $viaLink |
359
|
|
|
* @param bool $checkMultiple |
360
|
|
|
* @return array |
361
|
|
|
*/ |
362
|
66 |
|
private function buildBuckets($models, $link, $viaModels = null, $viaLink = null, $checkMultiple = true) |
363
|
|
|
{ |
364
|
66 |
|
if ($viaModels !== null) { |
365
|
36 |
|
$map = []; |
366
|
36 |
|
$viaLinkKeys = array_keys($viaLink); |
367
|
36 |
|
$linkValues = array_values($link); |
368
|
36 |
|
foreach ($viaModels as $viaModel) { |
369
|
36 |
|
$key1 = $this->getModelKey($viaModel, $viaLinkKeys); |
370
|
36 |
|
$key2 = $this->getModelKey($viaModel, $linkValues); |
371
|
36 |
|
$map[$key2][$key1] = true; |
372
|
|
|
} |
373
|
|
|
} |
374
|
|
|
|
375
|
66 |
|
$buckets = []; |
376
|
66 |
|
$linkKeys = array_keys($link); |
377
|
|
|
|
378
|
66 |
|
if (isset($map)) { |
379
|
36 |
|
foreach ($models as $model) { |
380
|
36 |
|
$key = $this->getModelKey($model, $linkKeys); |
381
|
36 |
|
if (isset($map[$key])) { |
382
|
36 |
|
foreach (array_keys($map[$key]) as $key2) { |
383
|
36 |
|
$buckets[$key2][] = $model; |
384
|
|
|
} |
385
|
|
|
} |
386
|
|
|
} |
387
|
|
|
} else { |
388
|
66 |
|
foreach ($models as $model) { |
389
|
66 |
|
$key = $this->getModelKey($model, $linkKeys); |
390
|
66 |
|
$buckets[$key][] = $model; |
391
|
|
|
} |
392
|
|
|
} |
393
|
|
|
|
394
|
66 |
|
if ($checkMultiple && !$this->multiple) { |
395
|
18 |
|
foreach ($buckets as $i => $bucket) { |
396
|
18 |
|
$buckets[$i] = reset($bucket); |
397
|
|
|
} |
398
|
|
|
} |
399
|
|
|
|
400
|
66 |
|
return $buckets; |
401
|
|
|
} |
402
|
|
|
|
403
|
|
|
|
404
|
|
|
/** |
405
|
|
|
* Indexes buckets by column name. |
406
|
|
|
* |
407
|
|
|
* @param array $buckets |
408
|
|
|
* @param string|callable $indexBy the name of the column by which the query results should be indexed by. |
409
|
|
|
* This can also be a callable (e.g. anonymous function) that returns the index value based on the given row data. |
410
|
|
|
* @return array |
411
|
|
|
*/ |
412
|
15 |
|
private function indexBuckets($buckets, $indexBy) |
413
|
|
|
{ |
414
|
15 |
|
$result = []; |
415
|
15 |
|
foreach ($buckets as $key => $models) { |
416
|
15 |
|
$result[$key] = []; |
417
|
15 |
|
foreach ($models as $model) { |
418
|
15 |
|
$index = is_string($indexBy) ? $model[$indexBy] : call_user_func($indexBy, $model); |
419
|
15 |
|
$result[$key][$index] = $model; |
420
|
|
|
} |
421
|
|
|
} |
422
|
|
|
|
423
|
15 |
|
return $result; |
424
|
|
|
} |
425
|
|
|
|
426
|
|
|
/** |
427
|
|
|
* @param array $attributes the attributes to prefix |
428
|
|
|
* @return array |
429
|
|
|
*/ |
430
|
136 |
|
private function prefixKeyColumns($attributes) |
431
|
|
|
{ |
432
|
136 |
|
if ($this instanceof ActiveQuery && (!empty($this->join) || !empty($this->joinWith))) { |
433
|
27 |
|
if (empty($this->from)) { |
434
|
|
|
/* @var $modelClass ActiveRecord */ |
435
|
6 |
|
$modelClass = $this->modelClass; |
436
|
6 |
|
$alias = $modelClass::tableName(); |
437
|
|
|
} else { |
438
|
27 |
|
foreach ($this->from as $alias => $table) { |
439
|
27 |
|
if (!is_string($alias)) { |
440
|
27 |
|
$alias = $table; |
441
|
|
|
} |
442
|
27 |
|
break; |
443
|
|
|
} |
444
|
|
|
} |
445
|
27 |
|
if (isset($alias)) { |
446
|
27 |
|
foreach ($attributes as $i => $attribute) { |
447
|
27 |
|
$attributes[$i] = "$alias.$attribute"; |
448
|
|
|
} |
449
|
|
|
} |
450
|
|
|
} |
451
|
|
|
|
452
|
136 |
|
return $attributes; |
453
|
|
|
} |
454
|
|
|
|
455
|
|
|
/** |
456
|
|
|
* @param array $models |
457
|
|
|
*/ |
458
|
136 |
|
private function filterByModels($models) |
459
|
|
|
{ |
460
|
136 |
|
$attributes = array_keys($this->link); |
461
|
|
|
|
462
|
136 |
|
$attributes = $this->prefixKeyColumns($attributes); |
463
|
|
|
|
464
|
136 |
|
$values = []; |
465
|
136 |
|
if (count($attributes) === 1) { |
466
|
|
|
// single key |
467
|
136 |
|
$attribute = reset($this->link); |
468
|
136 |
|
foreach ($models as $model) { |
469
|
136 |
|
if (($value = $model[$attribute]) !== null) { |
470
|
136 |
|
if (is_array($value)) { |
471
|
|
|
$values = array_merge($values, $value); |
472
|
|
|
} else { |
473
|
136 |
|
$values[] = $value; |
474
|
|
|
} |
475
|
|
|
} |
476
|
|
|
} |
477
|
136 |
|
if (empty($values)) { |
478
|
136 |
|
$this->emulateExecution(); |
|
|
|
|
479
|
|
|
} |
480
|
|
|
} else { |
481
|
|
|
// composite keys |
482
|
|
|
|
483
|
|
|
// ensure keys of $this->link are prefixed the same way as $attributes |
484
|
3 |
|
$prefixedLink = array_combine( |
485
|
3 |
|
$attributes, |
486
|
3 |
|
array_values($this->link) |
487
|
|
|
); |
488
|
3 |
|
foreach ($models as $model) { |
489
|
3 |
|
$v = []; |
490
|
3 |
|
foreach ($prefixedLink as $attribute => $link) { |
491
|
3 |
|
$v[$attribute] = $model[$link]; |
492
|
|
|
} |
493
|
3 |
|
$values[] = $v; |
494
|
3 |
|
if (empty($v)) { |
495
|
3 |
|
$this->emulateExecution(); |
|
|
|
|
496
|
|
|
} |
497
|
|
|
} |
498
|
|
|
} |
499
|
136 |
|
$this->andWhere(['in', $attributes, array_unique($values, SORT_REGULAR)]); |
|
|
|
|
500
|
136 |
|
} |
501
|
|
|
|
502
|
|
|
/** |
503
|
|
|
* @param ActiveRecordInterface|array $model |
504
|
|
|
* @param array $attributes |
505
|
|
|
* @return string |
506
|
|
|
*/ |
507
|
66 |
|
private function getModelKey($model, $attributes) |
508
|
|
|
{ |
509
|
66 |
|
$key = []; |
510
|
66 |
|
foreach ($attributes as $attribute) { |
511
|
66 |
|
$key[] = $this->normalizeModelKey($model[$attribute]); |
512
|
|
|
} |
513
|
66 |
|
if (count($key) > 1) { |
514
|
|
|
return serialize($key); |
515
|
|
|
} |
516
|
66 |
|
$key = reset($key); |
517
|
66 |
|
return is_scalar($key) ? $key : serialize($key); |
518
|
|
|
} |
519
|
|
|
|
520
|
|
|
/** |
521
|
|
|
* @param mixed $value raw key value. |
522
|
|
|
* @return string normalized key value. |
523
|
|
|
*/ |
524
|
66 |
|
private function normalizeModelKey($value) |
525
|
|
|
{ |
526
|
66 |
|
if (is_object($value) && method_exists($value, '__toString')) { |
527
|
|
|
// ensure matching to special objects, which are convertable to string, for cross-DBMS relations, for example: `|MongoId` |
528
|
|
|
$value = $value->__toString(); |
529
|
|
|
} |
530
|
|
|
|
531
|
66 |
|
return $value; |
532
|
|
|
} |
533
|
|
|
|
534
|
|
|
/** |
535
|
|
|
* @param array $primaryModels either array of AR instances or arrays |
536
|
|
|
* @return array |
537
|
|
|
*/ |
538
|
21 |
|
private function findJunctionRows($primaryModels) |
539
|
|
|
{ |
540
|
21 |
|
if (empty($primaryModels)) { |
541
|
|
|
return []; |
542
|
|
|
} |
543
|
21 |
|
$this->filterByModels($primaryModels); |
544
|
|
|
/* @var $primaryModel ActiveRecord */ |
545
|
21 |
|
$primaryModel = reset($primaryModels); |
546
|
21 |
|
if (!$primaryModel instanceof ActiveRecordInterface) { |
547
|
|
|
// when primaryModels are array of arrays (asArray case) |
548
|
|
|
$primaryModel = $this->modelClass; |
549
|
|
|
} |
550
|
|
|
|
551
|
21 |
|
return $this->asArray()->all($primaryModel::getDb()); |
|
|
|
|
552
|
|
|
} |
553
|
|
|
} |
554
|
|
|
|
If you access a property on an interface, you most likely code against a concrete implementation of the interface.
Available Fixes
Adding an additional type check:
Changing the type hint: