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POUse Requirejs to dynamically load Knockout AMD template & modules asynchronously facing race condition
 

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  1. POUse Requirejs to dynamically load Knockout AMD template & modules asynchronously facing race condition
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    <p>I'm using Knockout, Require and <a href="https://github.com/rniemeyer/knockout-amd-helpers" rel="nofollow">knockout-amd-helpers</a> in my app. </p> <p>I want to load models dynamically inside an <code>Knockout initialize</code> function which will be called many times, since I don't know what the models, figured this might be a more efficient way to dynamically load rather than load all models at once. See code below:</p> <pre><code>ko.utils.extend(ModelA.prototype.initialize = function(data, parent) { ... require(['model/Pretag' + ko.unwrap( data.code )], function(Role){ roleInstance = new Role(parent); roleInstance.initialize(data.properties); .... self.roleObservable( roleInstance ); } ... }) </code></pre> <p><strong>The Problem</strong>: with this approach is, often times, I will run into race condition from the template's inline JS code since the <code>roleInstance.initialize(data.properties);</code> has yet to finish initialize.</p> <p>Is there anyway to enforce multiple <code>require([..],function(){})</code> load asynchronously before the template start to execute any inline JS calls ?</p> <p><strong>Update</strong>: inline JS code inside the templates are as follow:</p> <pre><code>&lt;li&gt;Type: (&lt;span data-bind="text: getObject('CODE').getProperties().STATIC_TYPE"&gt;&lt;/span&gt;)&lt;/li&gt; </code></pre> <p>This will throw an error, since <code>getObject('CODE').getProperties()</code> is undefined because <code>getObject('CODE')</code> has yet to finish initialize</p> <p>The list is included by an inline ko template below.</p> <pre><code>&lt;!-- ko template: { name: 'template_contains_problem_inline_JS', foreach: people } --&gt;&lt;!-- /ko --&gt; </code></pre>
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    1. PTQuestion
    1. USJonathan
    1. USJonathan
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    1. COcan you describe the "inline JS calls" a little more. are you saying that bindings are failing, because data hasn't been loaded/created yet? I don't understand your full structure, but you might be able to use a `loading` observable and set it to `true` when you are done. Otherwise, possibly you could use the `module` binding from `amd-helpers` to load that module/section of your binding.
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      1. POUse Requirejs to dynamically load Knockout AMD template & modules asynchronously facing race condition
      1. USRP Niemeyer
    2. COThanks @RPNiemeyer I've included more example how the inline JS reside inside the app. Hope that can provide you a better understanding of my issue ! Also, I'm not sure what `loading` observable you're referring. Do you have an example ?
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      1. POUse Requirejs to dynamically load Knockout AMD template & modules asynchronously facing race condition
      1. USJonathan
    3. COIt seem in this case, that you could potentially use the `module` binding with a template (or inline template). Otherwise, a good strategy is to use an observable and when your module loads, populate the observable with your module. Then, you can use an `if`, `with`, or `template` binding to prevent any rendering until the module is loaded. Does that make sense?
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      1. POUse Requirejs to dynamically load Knockout AMD template & modules asynchronously facing race condition
      1. USRP Niemeyer
 

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