execute action (javascript function) after ember template is rendered

Asked By: Anonymous

I have very small web page with emberjs, where I want to show some item list and openlayers map for them, and another map for selected item.
Something like that:

<script type="text/x-handlebars" id="list">
<div class="list">
    <div id="list_map"></div>
</div>
{{outlet}}
</script>

<script type="text/x-handlebars" id="list/item" >
<div class="item">
    <div id="item_map"></div>
</div>
</script>
<script>
function showListMap() {
    listMap = new ol.Map({target:'list_map'});
}
function showItemMap() {
    itemMap = new ol.Map({target:'item_map'});
}
</script>

There is no problem to display map for list:

model: function(params) {
        var content = [];
        var url = 'http://localhost:8080/app/list'; 
        $.ajax({
          url: url,
          success: function(surveys) {            
            content.pushObjects(surveys);
            showListMap();
          }
        });
        return content;
}

and I have action in item controller that is executed, when opening selected item, but if I try to create item map there (in controllers action) it fails (afaik because there is no such div at that moment in DOM).
So if I could execute action or my function after div is already add to DOM, it should work.
And question would be, how to execute something after template is added to DOM, or that’s completely wrong way to do such stuff (than what would be correct ember way)?

Solution

Answered By: Anonymous

I can’t say much with seeing full code. But to execute some code after the DOM is rendered you schedule a function on the the run loops afterRender queue.

Ember.run.scheduleOnce('afterRender', this, function() {
  //The div should be available now.
});

But if you really need to touch the DOM I recommend you wrap your map code in a component. A component gets a didInsertElement where you can write your maps initialization code.

var component = Em.Component.extend({
  setup: function() {
    //Do you map init here.
  }.on('didInsertElement')
});