How can I initialize a controller from another controller that 'needs' it?

Question

Say I have two controllers, a CompaniesController and an IndexController. It turns out that all the data my Index route needs comes from the CompaniesController. So, I've specified my IndexController like this:

App.IndexController = Ember.ArrayController.extend({
    needs: 'companies',
});

This works well if the CompaniesController is already initialized, but what about the first time I visit the site? CompaniesController is empty.

So, I need to initialize the data for CompaniesController from within the IndexController. How do I do this?

Answer 1

Use setupController and controllerFor within the IndexRoute:

App.IndexRoute = Ember.Route.extend({
  model: function() {
    return this.store.find('company');
  },
  setupController: function(controller, model) {
    this.controllerFor('companies').set('model', model);
  }
});