Dependent observables with two view models?

[jcgerald]

I am working with the wonderful Knockout.js. I am using javascript classes to capture the structure. For example, one of several classes is: \[code\] function OverridableFormItemText(defaultId, defaultText, defaultHelpText, overrideId, overrideText, overrideHelpText) { this.DefaultFormItemTextId = ko.observable(defaultId); this.DefaultText = ko.observable(defaultText); this.DefaultHelpText = ko.observable(defaultHelpText); this.OverrideFormItemTextId = ko.observable(overrideId); this.OverrideText = ko.observable(overrideText); this.OverrideHelpText = ko.observable(overrideHelpText); }\[/code\]If I have two view models in the page and want to add a dependent observable property to my class OverridableFormItemText then do I need to do this twice due to the requirement to pass to view model to the function?\[code\]viewModel1.OverridableFormItemText.SomeDependentProperty = ko.dependentObservable(function() { return this.DefaultText() + " " + this.OverrideText();}, viewModel1);viewModel2.OverridableFormItemText.SomeDependentProperty = ko.dependentObservable(function() { return this.DefaultText() + " " + this.OverrideText();}, viewModel2);\[/code\]