14 Using Observers to Clean Up Code
Goal
You’d like to decrease the dependency certain parts of your application have on other parts of it to keep things flexible and clean, especially when you need to take action in one part of your application when something in another part changes.
Solution
In Flex, use binding tags, BindingUtils
and ChangeWatchers
, to be notified when state changes occur in another part of the application.
In Rails, use the ActiveRecord lifecycle methods and observers to take action when certain events take place on your models.
BindingUtils and ChangeWatchers in Flex
As you’ve gone through this book and seen how powerful and useful Flex’s binding syntax is for cleaning up your code, you may have ...
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