Question

Can anyone direct me towards some code or a tutorial for implementing the ViewModel in Flex 3?

All I’m finding on the web are examples for Silverlight.

Answer 1

Martin Fowler has also written about these ideas in the past under the term “Presentation Model“. So you might find useful tutorials under that search phrase as well since it’s not an “MS invented term”. 🙂

Indeed, this MS overview material acknowledges Fowler’s work directly

In 2005, John Gossman, currently one
of the WPF and Silverlight Architects
at Microsoft, unveiled the
Model-View-ViewModel (MVVM) pattern on
his blog. MVVM is identical to
Fowler’s Presentation Model, in that
both patterns feature an abstraction
of a View, which contains a View’s
state and behavior. Fowler introduced
Presentation Model as a means of
creating a UI platform-independent
abstraction of a View, whereas Gossman
introduced MVVM as a standardized way
to leverage core features of WPF to
simplify the creation of user
interfaces. In that sense, I consider
MVVM to be a specialization of the
more general PM pattern, tailor-made
for the WPF and Silverlight platforms.