Instead of outlet, you can use a component:
<script type="text/x-handlebars" id="components/x-outlet">
{{ partial template }}
</script>
Then, in your controller, you can have a template property that you can pass to the component to display your template dynamically:
App.IndexController = Ember.ArrayController.extend({
template: function(){
return 'this_one';
}.property(),
actions: {
that_one: function(){
this.set('template', 'that_one');
}
}
});
Working example here
Not completely sure what you mean by
Or better yet, call an action in router.js from a controller?
but if you are just trying to transition into a different route, you can use the transitionToRoute() method (see here)