Yii2 global filter/behavior to force user to authenticate first

Question

In my Yii2 application I'm trying to force all users to be authenticated. If they're not already authenticated they should be redirected to the login page.

In Yii1 I did this by creating a class that would check if a user was logged in and attaching that class to the onBeginRequest behavior in my main config file.

// Yii 1
'behaviors' => array(
    'onBeginRequest' => array(
        'class' => 'application.components.RequireLogin',
    )
),

How can I get the same behavior in Yii2? I know I can use behavior to do this, but I wan't to add this behavior to my main config file so all requests are first checked for authentication.

The working behaviors method looks like this:

// Yii2
public function behaviors() {
    return [
        'access' => [
            'class' => AccessControl::className(),
            'rules' => [
                [
                    'actions' => ['login', 'error'],
                    'allow' => true,
                ],
                [
                    'allow' => true,
                    'roles' => ['@'],
                ],
            ],
        ],
    ];
}

Answer 1

Ok, so I had to add the following code below 'components' => [...]

 'as beforeRequest' => [
    'class' => 'yii\filters\AccessControl',
    'rules' => [
        [
            'actions' => ['login', 'error'],
            'allow' => true,
        ],
        [

            'allow' => true,
            'roles' => ['@'],
        ],
    ],
],

Read more about the format: http://www.yiiframework.com/doc-2.0/guide-concept-configurations.html#configuration-format