How in Yii 2 access AR object as component?

Actually, i want have access to some AR object in anywere. So i want access to this ojb as yii component. Like as Yii using this for user: Yii::$app->user->identity - User component contains User AR object. I want store my Page AR in component. So, it's look like something: Yii::$app->page->page - Page AR is a propery of Page component. Not very nice :(. This is the only way?