Hi. This is first article with my Yii tutorial. I had to split it into more articles as there's limited length of texts on Wiki. So once you understand basics, you can read next article here: Yii for beginners 2.
Sometimes the active form we wish to use to edit/add a new element on our database is too small and we believe that is much better to use an AJAX'ed dialog/slide form rather than reloading the page to just display one or two fields.