A very common task it’s modify the defaults behaviours about framework.
These tutorial illustrates how custom Controller’s and Active Record’s classes.
http://www.yiiframework.com/wiki/121/extending-common-classes-to-allow-better-customization
The best place to store those custom classes it is "protected/components"?
And third classes (like Zend)?
I really need make a Yii:import and Require_Once? There would be a better way?
http://www.yiiframework.com/wiki/20/how-to-generate-web-feed-for-an-application
And when it comes to features coupled, like a WebService or just a simple Yii:Import, which you do not need to specify the "extend" class (natively inherited), how to store and use these custom classes?
Thanks!