Description
Adhering to this guideline implies that all the logic in the Views should be moved to the ViewModels. While the purpose of ViewModels is to pre-process data to be ready to use by Views, it might be tempting to implement minor operations in Views. Nevertheless, adhering to this guideline guarantees a higher level of consistency and reliability of all the components which are based on the ViewModels.
Example
We created a simple MVVM example.
Our viewModel provides all the data for the View. When a new note is added to the model, the list of notes has been changed, and a new stream from the model to the viewModel is passed. The View observes this changed list and updates the view.
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