MVC - an (re)-introduction

Transcript

1. MVC Re-introduction Oursky Internal Present Friday, 13 January, 12
2. MVC • PHP, Pylons, Rails... everywhere. • Almost everyone of us learn about MVC the 1st day you join Oursky... • Still remember “separation of concern”? Friday, 13 January, 12
3. Friday, 13 January, 12
4. Javascript MVC Friday, 13 January, 12
5. So what the f**k is MVC? Friday, 13 January, 12
6. History Friday, 13 January, 12
7. SmallTalk @ 80s Friday, 13 January, 12
8. SmallTalk @ 80s • Observer Pattern is used to monitor changes in model to update view • Controller is not a mediator between model and view any more as in Web most of the time Friday, 13 January, 12
9. 90s: GUI programming... Until 2000 - Web becomes common Friday, 13 January, 12
10. Era of Web • View cannot observe Model (at least until Comet or Ajax became common) • Model 1 / Model II from Java • Rails say: “That’s the new MVC” Friday, 13 January, 12
11. Era of Web • Controller is more like a meditator of Model and View, it collects what the web request needs and pass to View Friday, 13 January, 12
12. Today... Friday, 13 January, 12
13. What is the problem of Web MVC? • Model is not testable (Newable, Injectable) • Solution @ PandaDesk / PandaForm: • Instead of an class say “UserAccount”, which do both application logic and persistent operation ( .save, .find ....) • We have: • “UserAccount” / “UserAccountTable” for persistent operation, and • “UserAccountService” for application logic Friday, 13 January, 12
14. Javascript MVC • Similar with traditional MVC, e.g. • Backbone.js at FileSquare, or • YUI at PandaForm.com Friday, 13 January, 12
15. iPhone App Discuss: Why use a mediator instead of observing model? Friday, 13 January, 12
16. Further Reading • PandaForm / FileSquare code • Backbone.js Documentation Friday, 13 January, 12