Sounds like you could use a feature called computeds.
Computeds are binding fields that are calculated on the fly and may be compounds of other model fields.
I can't see this kind of feature in the stickit docs, though. So you could give the really excellent model-binding library backbone-epoxy a shot. I made a jsfiddle for you.
var Person = Backbone.Epoxy.Model.extend({
defaults:{
name: {
first: 'James',
last: 'White'
}
},
computeds: {
fullname: function() {
return this.get('name').first + ' ' + this.get('name').last;
}
}
});
var view = new Backbone.Epoxy.View({
el: '#app',
model: new Person()
});
And the html:
<div id="app">
<input type="text" data-bind="value:fullname" />
</div>