Skip to content
Permalink
master
Switch branches/tags

Name already in use

A tag already exists with the provided branch name. Many Git commands accept both tag and branch names, so creating this branch may cause unexpected behavior. Are you sure you want to create this branch?
Go to file
 
 
Cannot retrieve contributors at this time
<?php
/**
* @link https://www.yiiframework.com/
* @copyright Copyright (c) 2008 Yii Software LLC
* @license https://www.yiiframework.com/license/
*/
namespace yii\db;
/**
* ActiveQueryTrait implements the common methods and properties for active record query classes.
*
* @author Qiang Xue <qiang.xue@gmail.com>
* @author Carsten Brandt <mail@cebe.cc>
* @since 2.0
*/
trait ActiveQueryTrait
{
/**
* @var string the name of the ActiveRecord class.
*/
public $modelClass;
/**
* @var array a list of relations that this query should be performed with
*/
public $with;
/**
* @var bool whether to return each record as an array. If false (default), an object
* of [[modelClass]] will be created to represent each record.
*/
public $asArray;
/**
* Sets the [[asArray]] property.
* @param bool $value whether to return the query results in terms of arrays instead of Active Records.
* @return $this the query object itself
*/
public function asArray($value = true)
{
$this->asArray = $value;
return $this;
}
/**
* Specifies the relations with which this query should be performed.
*
* The parameters to this method can be either one or multiple strings, or a single array
* of relation names and the optional callbacks to customize the relations.
*
* A relation name can refer to a relation defined in [[modelClass]]
* or a sub-relation that stands for a relation of a related record.
* For example, `orders.address` means the `address` relation defined
* in the model class corresponding to the `orders` relation.
*
* The following are some usage examples:
*
* ```php
* // find customers together with their orders and country
* Customer::find()->with('orders', 'country')->all();
* // find customers together with their orders and the orders' shipping address
* Customer::find()->with('orders.address')->all();
* // find customers together with their country and orders of status 1
* Customer::find()->with([
* 'orders' => function (\yii\db\ActiveQuery $query) {
* $query->andWhere('status = 1');
* },
* 'country',
* ])->all();
* ```
*
* You can call `with()` multiple times. Each call will add relations to the existing ones.
* For example, the following two statements are equivalent:
*
* ```php
* Customer::find()->with('orders', 'country')->all();
* Customer::find()->with('orders')->with('country')->all();
* ```
*
* @return $this the query object itself
*/
public function with()
{
$with = func_get_args();
if (isset($with[0]) && is_array($with[0])) {
// the parameter is given as an array
$with = $with[0];
}
if (empty($this->with)) {
$this->with = $with;
} elseif (!empty($with)) {
foreach ($with as $name => $value) {
if (is_int($name)) {
// repeating relation is fine as normalizeRelations() handle it well
$this->with[] = $value;
} else {
$this->with[$name] = $value;
}
}
}
return $this;
}
/**
* Converts found rows into model instances.
* @param array $rows
* @return array|ActiveRecord[]
* @since 2.0.11
*/
protected function createModels($rows)
{
if ($this->asArray) {
return $rows;
} else {
$models = [];
/* @var $class ActiveRecord */
$class = $this->modelClass;
foreach ($rows as $row) {
$model = $class::instantiate($row);
$modelClass = get_class($model);
$modelClass::populateRecord($model, $row);
$models[] = $model;
}
return $models;
}
}
/**
* Finds records corresponding to one or multiple relations and populates them into the primary models.
* @param array $with a list of relations that this query should be performed with. Please
* refer to [[with()]] for details about specifying this parameter.
* @param array|ActiveRecord[] $models the primary models (can be either AR instances or arrays)
*/
public function findWith($with, &$models)
{
$primaryModel = reset($models);
if (!$primaryModel instanceof ActiveRecordInterface) {
/* @var $modelClass ActiveRecordInterface */
$modelClass = $this->modelClass;
$primaryModel = $modelClass::instance();
}
$relations = $this->normalizeRelations($primaryModel, $with);
/* @var $relation ActiveQuery */
foreach ($relations as $name => $relation) {
if ($relation->asArray === null) {
// inherit asArray from primary query
$relation->asArray($this->asArray);
}
$relation->populateRelation($name, $models);
}
}
/**
* @param ActiveRecord $model
* @param array $with
* @return ActiveQueryInterface[]
*/
private function normalizeRelations($model, $with)
{
$relations = [];
foreach ($with as $name => $callback) {
if (is_int($name)) {
$name = $callback;
$callback = null;
}
if (($pos = strpos($name, '.')) !== false) {
// with sub-relations
$childName = substr($name, $pos + 1);
$name = substr($name, 0, $pos);
} else {
$childName = null;
}
if (!isset($relations[$name])) {
$relation = $model->getRelation($name);
$relation->primaryModel = null;
$relations[$name] = $relation;
} else {
$relation = $relations[$name];
}
if (isset($childName)) {
$relation->with[$childName] = $callback;
} elseif ($callback !== null) {
call_user_func($callback, $relation);
}
}
return $relations;
}
}