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68 lines
2.2 KiB
PHP
68 lines
2.2 KiB
PHP
<?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\redis;
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use yii\db\ActiveRelationInterface;
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use yii\db\ActiveRelationTrait;
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/**
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* ActiveRelation represents a relation between two Active Record classes.
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*
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* ActiveRelation instances are usually created by calling [[ActiveRecord::hasOne()]] and
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* [[ActiveRecord::hasMany()]]. An Active Record class declares a relation by defining
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* a getter method which calls one of the above methods and returns the created ActiveRelation object.
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*
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* A relation is specified by [[link]] which represents the association between columns
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* of different tables; and the multiplicity of the relation is indicated by [[multiple]].
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*
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* If a relation involves a pivot table, it may be specified by [[via()]] or [[viaTable()]] method.
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*
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* @author Carsten Brandt <mail@cebe.cc>
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* @since 2.0
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*/
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class ActiveRelation extends ActiveQuery implements ActiveRelationInterface
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{
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use ActiveRelationTrait;
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/**
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* Executes a script created by [[LuaScriptBuilder]]
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* @param Connection $db the database connection used to execute the query.
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* If this parameter is not given, the `db` application component will be used.
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* @param string $type the type of the script to generate
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* @param null $column
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* @return array|bool|null|string
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*/
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protected function executeScript($db, $type, $column=null)
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{
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if ($this->primaryModel !== null) {
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// lazy loading
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if ($this->via instanceof self) {
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// via pivot table
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$viaModels = $this->via->findPivotRows([$this->primaryModel]);
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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 ActiveRelation $viaQuery */
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list($viaName, $viaQuery) = $this->via;
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if ($viaQuery->multiple) {
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$viaModels = $viaQuery->all();
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$this->primaryModel->populateRelation($viaName, $viaModels);
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} else {
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$model = $viaQuery->one();
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$this->primaryModel->populateRelation($viaName, $model);
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$viaModels = $model === null ? [] : [$model];
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}
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$this->filterByModels($viaModels);
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} else {
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$this->filterByModels([$this->primaryModel]);
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}
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}
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return parent::executeScript($db, $type, $column);
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}
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}
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