# Questions on combining 2 OOP design patterns

**URL:** <https://forum.kirupa.com/t/questions-on-combining-2-oop-design-patterns/327567>\
**Category:** flash\
**Created:** [March 9, 2012, 9:05pm UTC](https://forum.kirupa.com/t/questions-on-combining-2-oop-design-patterns/327567 "2012-03-09T21:05:00Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![theNub](https://avatars.discourse-cdn.com/v4/letter/t/74df32/32.png) [@theNub](https://forum.kirupa.com/u/theNub)\
**Post date:** [March 9, 2012, 9:05pm UTC](https://forum.kirupa.com/t/questions-on-combining-2-oop-design-patterns/327567/1 "2012-03-09T21:05:00Z")

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Hi there,

I have a question on how to combine 2 OOP design patterns. First off, I created a MVC pattern that loads XML into the as3 classes. Now, I want to add another OOP design pattern which is the OBSERVER pattern. How would I call that in the MVC pattern? Any help would be greatly appreciated.

To be more clear about this, I created a MVC pattern design of a widget that loads the data from the xml file. I want to input a graph bar observer pattern to the widget. How would i do that? Sorry if I’m not clear about this. Thanks in advance.

Sincerely,

theNub