How to determine oldview/newview on back event of navigation view in sencha touch 2

Question

When the back event fires in a ST2 navigationview how do you determine which view is being navigated away from and which view we're navigating to?

Answer 1

So I found another work around for this. I needed to know the old and new views for navigation so that I could change some filters applied to a data store. Here's what I did, on the view that is returning back I added the following code:

listeners: {
    deactivate: function() {
        ... do some stuff ...
    }
}

Although not a solution to the original problem, this works well for me.