title: Yii authorization and redirecting
body: <p>I'm new in Yii, and I need to fix some thing: there is some controller with some actions, and if user tries to load some action, I need to check if he's authorized; if yes, then do some actions, if no - to redirect to login page. How can I do it? I hope I needn't to check through Yii::user and redirect manually in each action? Thanks in advance. </p>