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

Answer 2

I'm actually not versed into Yii2 (but very much so into Yii1).

One solution that can be employed in Yii1 and I guess also in Yii2 is having a filter method in a master Controller class. Typically a single controller serves as a master controller. If you don't have one, create it and everyone should extend it. You can implement this probably not as a filter but in other methods of this 'master controller' (init() ?) If all activity is going through controller class then you're set.