How are you populating/validating your ViewModels?

Question

I\'m curious of all of the various ways people are building their ViewModels and why they choose that method.

I can think of several ways here:

-1. Injected repo

Answer 1

I use a service layer that hides the domain model from the controller returning ViewModels from the service methods. This allows me to make changes to the domain model without impacting the client.