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2013-12-24T12:55:54.187
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2013-12-24T13:06:31.053
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2013-12-24T13:06:31.053
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20761355
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In fact, it is possible. Analyzing the code of Dojo's <code>Tree.js</code>, led me to the conclusion, that the function that is called on every node expand is <pre><code>_expandNode: function(/*TreeNode*/ node) </code></pre> The function contains the following code: <pre><code>// Load data if it's not already loaded if(!node._loadDeferred){ // load the node } </code></pre> Our culprit is the <code>_loadDeferred</code> property, of course. So the question was, how to set this property for each expanded node. I decieded to do that in <code>getChildren</code> method. First I needed to get the tree node based on item from the store and then I had to set its property to false. <ol> <li>I found out that <code>tree.getNodesByItem(item)</code> does to first part. The only thing to remember is it returns an array of nodes, so we need to take the first element: <pre><code>tree.getNodesByItem(item)[0] </code></pre></li> <li>Now it's only a matter of setting the property: <pre><code>tree.getNodesByItem(item)[0]._loadDeferred = false; </code></pre></li> </ol> So, the final solution is <pre><code>var store = new Observable(new JsonRest({ target: "...", idProperty: "id", mayHaveChildren: function(object) { return object.hasChildren; }, getChildren: function(object, onComplete, onError) { this.get(object.id).then(function(fullObject) { object.children = fullObject.children; onComplete(fullObject.children); tree.getNodesByItem(object)[0]._loadDeferred = false; }, onError); }, getRoot: function(onItem, onError) { this.get("I1").then(onItem, onError); }, getLabel: function(object) { return object.name; } })); </code></pre>
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1. POHow to disable cache / touch server on every node expand in Dojo tree?
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1. USMarcin Świerczyński
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1. USMarcin Świerczyński
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