In this article i will explain how to customize log activity in database, Imaging you need to save IP user, Url request and user_name in database,But table created by default with Yii only have id,level,category,logtime and message
CFormatter is one of Yii's core components and used to format values displayed in widgets like CGridView or CDetailView. All classic formats like numbers, text, urls or datetime are supported but you may have to use a formatting rule that isn't built in. Let's say we want to display arrays of strings (like tags associated with a product model). When using CDetailView we would usually make use of PHPs implode function to create a simple string value of all values in the $product->tags array.
There are cases that you want more control to your menu
Suppose you want a specific menu with complex css, layout, images.