Is there an after view change hook (much like didInsertElement)?
Using the didInsertElement hook, I'm able to do some jQuery plugin initialization that is needed. However, if a property changes, Ember re-renders the view, but does not call didInsertElement again. Presumably this is because the element is already on the DOM and only certain pieces have changed.
My question is, is there a method I can override, or some other way to access what's been rendered to the DOM by an Ember.View AFTER its actually inserted into the DOM?
I attempted to use afterRender , but it did not work.
I came up with a slightly unusual way of tackling this problem. You can make a handlebars helper that fires an event when the view portion is re-rendered. I was using Bootstrap and jqPlot and needed to be able to tell, say, when the div was available to draw a chart into. With my helper you can do this:
{{#if dataIsLoaded}}
{{trigger didRenderChartDiv}}
<div id="chartHost"></div>
{{/if}}
You could also hook into the childViews array and observe changes on that.
Something like this works but I don't think it's a good performance practice.
childViewsArrayDidChange: function() {
console.log("childViews-Array did change");
}.observes('childViews.@each')
Not sure if the question is still valid since it's been a while. but no answer was selected. I ran into a similar problem where I want to show a form based on a controller property. Once the form is displayed I would like to run some javascript to bind event handlers.
The Javascript however did not bind the event handlers properly since the elements were not displayed when the didInsertElement was triggered.
My solution is the following,
Controller & View
App.FormController = Ember.Controller.extend({
myViewVisible : false,
actions : {
toggleForm : function(){
this.toggleProperty('myViewVisible');
console.log( this.get('myViewVisible') );
}
}
});
App.FormView = Ember.View.extend({
isVisible:function(){
this.rerender();
}.property('controller.myViewVisible'),
didInsertElement : function(){
// Do JS stuff
}
});
And the template
<script type="text/x-handlebars" data-template-name="form">
<h2>Form</h2>
<button {{action 'toggleForm'}}>Toggle form</button>
{{#if myViewVisible}}
{{partial "tform"}}
{{else}}
<p>Click button to show form</p>
{{/if}}
</script>
The view binds a property of the controller. Once that property changes the isVisible function kicks in and rerenders the view. Causing the didInsertElement to fire again and binding the JS code to the DOM elements that are now available.
Hope this helps.
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