how to trigger element features after render in ember-cli - ember.js

Question

I want to add tooltips onto a button in a component that can appear based on a set of results back from the server. (i.e. action buttons for delete, edit etc.)
I have created a “search” component that is rendering into the application and when a search button is clicked the server may return a number of rows into that same search component template.
so for example:
My-app/pods/factual-data/template.hbs
Contains:
…
{{#if results}}
<div class="row">
<div class="col-sm-3"><b>Factual ID</b></div>
<div class="col-sm-2"><b>Name</b></div>
<div class="col-sm-2"><b>Town</b></div>
<div class="col-sm-2"><b>Post Code</b></div>
<div class="col-sm-2"><b>Actions</b></div>
</div>
{{/if}}
{{#each result in results}}
<div class="row">
<div class="col-sm-3">{{result.factual_id}}</div>
<div class="col-sm-2">{{result.name}}</div>
<div class="col-sm-2">{{result.locality}}</div>
<div class="col-sm-2">{{result.postcode}}</div>
<div class="col-sm-2">
<button {{action "clearFromFactual" result.factual_id}} class="btn btn-danger btn-cons tip" type="button" data-toggle="tooltip" class="btn btn-white tip" type="button" data-original-title="Empty this Row<br> on Factual" ><i class="fa fa-check"></i></button>
</div>
</div>
{{/each}}
…
However I cannot get the tooltip code to function, due to an element insert detection/timing issue..
In the component
My-app/pods/factual-data/component.js
Contains:
...
didInsertElement : function(){
console.log("COMPONENT: didInsertElement");
Ember.run.scheduleOnce('afterRender', this, this.afterRenderEvent);
this.enableToolTips();
},enableToolTips: function() {
var $el = Ember.$('.tip');
console.log("TOOLTIP:", $el);
if($el.length > 0) {
$el.tooltip({
html:true,
delay: { show: 250, hide: 750 }
});
}
}
...
However it seems didInsertElement is only run when the component is first rendered, is there a different function that is called everytime something in the DOM is changed within a component?
I did try to use observes: i.e.
…
enableToolTips: function() {
var $el = Ember.$('.tip');
console.log("TOOLTIP:", $el);
if($el.length > 0) {
$el.tooltip({
html:true,
delay: { show: 250, hide: 750 }
});
}
}.observes('results')
…
Which does trigger when the results variable is changed however it is still triggering before the content is actually rendered. I am assuming this because is I manually run in the console Ember.$('.tip').tooltip() (after the button is displayed) then the tooltips work ok.
Any pointers on this issue?

Answer 1

Try
enableToolTips: function() {
Ember.run.scheduleOnce('afterRender', this, function() {
var $el = Ember.$('.tip');
console.log("TOOLTIP:", $el);
if($el.length > 0) {
$el.tooltip({
html:true,
delay: { show: 250, hide: 750 }
});
}
});
}.observes('results')

Answer 2

Checking Ember.Component API there are two hooks that can do that
willClearRender : When component html is about to change.
willInsertElement : When old html is cleared and new one is going to be placed.
But you need to have a look on scheduleOnce.
Its worth noting that didInsertElement runs every time. But when it runs view was not updated. To solve that you need to run your code inside a Run Loop like this
didInsertElement : function(){
var self = this;
Ember.run.scheduleOnce('afterRender', this, function(){
//run tool tip here
self.$().find(".tip").tooltip({
});
});
}