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    <p>Yes, but you'd have to output the variable with erb e.g.</p> <pre><code>ko.observable("&lt;%= @person.name %&gt;"); </code></pre> <p>Generally however, you don't want to pass specific variables to specific observables, you want to pass the resource itself to a new I stance of the view model, and then set the view model variables from that, I will update with a better example when I get to a computer, but basically:</p> <pre><code>ko.applyBindings(new viewModel("&lt;%= resource.to_json.html_safe %&gt;")); </code></pre> <p>Update with better example</p> <p>A person view model I would have structured roughly like this, note the parenthesis, Im not sure exactly why they are needed but if I remember correctly it doesen't work without them.</p> <pre><code>var personViewModel = function(person){ var self = this; self.first_name = ko.observable(person.first_name); self.last_name = ko.observable(person.last_name); self.friends = ko.observableArray(person.friends); } person_json = &lt;%= (@person.to_json.html_safe) %&gt;; ko.applyBindings(new personViewModel(person_json)); </code></pre> <p>However, I like to use coffeescript for my view models these days, as a class for each view model, here is the same-ish code (working, rough equivalent, using class instead of funciton) in coffeescript.</p> <p>view_models/personviewmodel.js.coffee</p> <pre><code>class PersonViewModel constructor: (person) -&gt; @first_name = ko.observable(person.first_name) @last_name = ko.observable(person.last_name) @friends = ko.observableArray(person.friends) window.PersonViewModel = PersonViewModel </code></pre> <p>And then in your actual view below the form its being attached to.</p> <pre><code>person_json = &lt;%= (@person.to_json.html_safe) %&gt;; ko.applyBindings(new PersonViewModel(person_json)); </code></pre>
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    1. COThis is helpful, but I am wanting to access the `@person` instance variable in my viewmodel.js, not my view.html.erb. Is this possible? You seem to be accessing `@person` in your view, not your .js file.
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    2. CONo thats not possible, not is it a good idea, even if it were. Your .js files are compiled at runtime, or when your assets are precompiled. That is why you need to create a view model that can be instantiated, and then pass it the data it needs in the view.
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