The Yii Framework has had a new major release and while the API documentation for the new version 2 is a lot better, there doesn't seem to be an easy way to find out what the new way of doing something is. I'm setting this article up as blogglue in order to join all these helper articles together.

1. Default controllers and default actions: Checking if you are on the homepage.
2. Url creation: Yii commands I keep forgetting.