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POComplex Object passed into ko.mapping.fromJS
 

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    <p>I have a complex object I want to pass into <code>ko.mapping.fromJS</code> and my problem is that I only want one field to be observable, but the other properties come across as either null or non-existent based on the methods I have tried.</p> <p>I have created a jsFiddle <a href="http://jsfiddle.net/pcasagrande/J2YTL/" rel="nofollow">here</a> to illustrate my problem. I wish for the inner object to simply be copied as I have no need for it to be observable; I don't want the extra overhead considering the number of these I will have.</p> <p>The goal of this would be to make the <code>qty</code> editable, but the <code>inner.name</code> remain the same in the text box. This would mean that one is an observable while the other is not.</p> <p>If any one has another way of doing it that does not involve the mapping I would love to hear it. My view model has quite a few functions and such, and the data is coming in from an AJAX call.</p> <pre><code>function viewModel() { var self = this; self.slots = ko.observableArray([]); self.load = function() { ko.mapping.fromJS( [ { 'qty': 1, 'inner': { 'name': 'thing'} }, { 'qty': 2, 'inner': { 'name': 'stuff'} } ], { 'include': ['qty'], 'ignore': ['inner.name'] }, self.slots); } }; ko.applyBindings(new viewModel()); &lt;button data-bind="click: load"&gt;Go&lt;/button&gt; &lt;ul data-bind="foreach: slots"&gt; &lt;li&gt; &lt;span data-bind="text: qty"&gt;&lt;/span&gt;&amp;nbsp;&lt;span data-bind="text: inner.name"&gt;&lt;/span&gt;&lt;input data-bind="value: qty" /&gt;&lt;input data-bind="value: inner.name" /&gt; &lt;/li&gt; &lt;/ul&gt; </code></pre>
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