Should I implement business logic on a Model or a ViewModel

Question

When I\'m processing business logic in an MVVM app. Should I do this on the Model or the ViewModel?

For example, if I want to re-calculate costs after an Asset has b

Answer 1

if you model contain required data for calculation you can use model.if model does not contain the data means create view-model and get data to do the calculation.(With respect to Business logic )

if you want to pass this data to view create View Model It improves code re-use opportunities