MVC and Classic OO Paradigm. How to?

Question

Hi,

I'm a little bit confused about MVC and OO paradigms. I have read some documentation about classical OO in the book "The Object-Oriented Thought Process".

Now I need to apply what I have learn in this book in the context of MVC pattern.

How can I design from scratch using the OO paradigm and implement it in a MVC Framework like CodeIgniter, or CakePHP, or other?

Best Regards,

Answer 1

Not sure on PHP but i would imagine the general principles would remain the same IMHO.

1. Clear seperation of concerns by using a Dependency Injection (DI) container
2. Lightweight and DRY controllers that only handle view presentation logic
3. A Service layer to handle all Business Logic and Model validation
4. A Repository Layer to handle persistence of your Data Model
5. Use interfaces to decouple each layer and inject instances using your DI container

Answer 2

Best way is to work through a tutorial and see how it fits together: http://book.cakephp.org/view/1528/Blog