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<?php
/**
* @link http://www.yiiframework.com/
* @copyright Copyright (c) 2008 Yii Software LLC
* @license http://www.yiiframework.com/license/
*/
namespace yii\di\dependencies;
use Psr\Container\ContainerInterface;
use yii\di\Container;
use yii\di\contracts\DependencyInterface;
use yii\di\exceptions\InvalidConfigException;
* Dependency points a service with a given class in the container which must implement a given class
class NamedClassDependency implements DependencyInterface
{
private $id;
private $class;
private $optional;
* Constructor.
* @param string $id the component ID
public function __construct(string $id, string $class, bool $optional)
$this->id = $id;
$this->class = $class;
$this->optional = $optional;
}
public static function to(string $id, string $class)
return new self($id, $class, false);
public function resolve(ContainerInterface $container)
try {
$result = $container->get($this->id);
} catch (\Throwable $t) {
if ($this->optional) {
return null;
throw $t;
if (!$result instanceof $this->class) {
throw new InvalidConfigException(strtr('Container returned incorrect type for service {s}, expected {e}, got {r}', [
'{s}' => $this->id,
'{e}' => $this->class,
'{r}' => get_class($result)
]));
return $result;
yiisoft /
di
