yii\di\Container::get PHP 메소드

get() 공개 메소드

You may provide constructor parameters ($params) and object configurations ($config) that will be used during the creation of the instance. If the class implements [[\yii\base\Configurable]], the $config parameter will be passed as the last parameter to the class constructor; Otherwise, the configuration will be applied *after* the object is instantiated. Note that if the class is declared to be singleton by calling Container::setSingleton, the same instance of the class will be returned each time this method is called. In this case, the constructor parameters and object configurations will be used only if the class is instantiated the first time.
public get ( string $class, array $params = [], array $config = [] ) : object
$class string the class name or an alias name (e.g. `foo`) that was previously registered via [[set()]] or [[setSingleton()]].
$params array a list of constructor parameter values. The parameters should be provided in the order they appear in the constructor declaration. If you want to skip some parameters, you should index the remaining ones with the integers that represent their positions in the constructor parameter list.
$config array a list of name-value pairs that will be used to initialize the object properties.
리턴 object an instance of the requested class.
    public function get($class, $params = [], $config = [])
    {
        if (isset($this->_singletons[$class])) {
            // singleton
            return $this->_singletons[$class];
        } elseif (!isset($this->_definitions[$class])) {
            return $this->build($class, $params, $config);
        }
        $definition = $this->_definitions[$class];
        if (is_callable($definition, true)) {
            $params = $this->resolveDependencies($this->mergeParams($class, $params));
            $object = call_user_func($definition, $this, $params, $config);
        } elseif (is_array($definition)) {
            $concrete = $definition['class'];
            unset($definition['class']);
            $config = array_merge($definition, $config);
            $params = $this->mergeParams($class, $params);
            if ($concrete === $class) {
                $object = $this->build($class, $params, $config);
            } else {
                $object = $this->get($concrete, $params, $config);
            }
        } elseif (is_object($definition)) {
            return $this->_singletons[$class] = $definition;
        } else {
            throw new InvalidConfigException('Unexpected object definition type: ' . gettype($definition));
        }
        if (array_key_exists($class, $this->_singletons)) {
            // singleton
            $this->_singletons[$class] = $object;
        }
        return $object;
    }

Usage Example

예제 #1
0
 /**
  * @param $from
  * @param $to
  * @param $data
  * @return mixed
  */
 public function convert($from, $to, $data)
 {
     $executor = new Executor();
     $decoder = $this->container->get($from);
     $encoder = $this->container->get($to);
     $executor->setDecodeService($decoder);
     $executor->setEncodeService($encoder);
     return $executor->transform($data);
 }
All Usage Examples Of yii\di\Container::get