prevent view from updating model

[koen]

Is there any technique that prevents the view from updating the model?

 

Example:

Controller says: model, do a login with credentials x and y.

The view has access to the model also, to display some data. But I don't want it to be able to ask it to do a login.

 

So I think the question is whether there is a way to allow the controller to access [property or method] X of the model but not Y, and the view only Y but not X.