Ember - What's the difference between controller's content and model property

Question

In ember\'s official guide, it provides two ways to set the controller\'s underlying object. First is setting the model property:

App.SongsRoute = Ember.Rout         


        

Answer 1

In the documentation - http://emberjs.com/api/classes/Ember.Controller.html#property_model - it clearly states that when retrieving or modifying a controller's model, the model property should be used instead of the content property.

Answer 2

It seems they are the same thing,

https://github.com/emberjs/ember.js/blob/v1.3.0/packages/ember-runtime/lib/controllers/controller.js#L44

Ember.ControllerMixin = Ember.Mixin.create(Ember.ActionHandler, {
....
model: Ember.computed.alias('content'),
....

The model property is an alias for content.

Also,

https://github.com/emberjs/ember.js/blob/v1.3.0/packages/ember-routing/lib/system/route.js#L849

which mentions that,

By default, the `setupController` hook sets the `content` property of
the controller to the `model`.

UPDATE Deprecated since v1.7.0 and the code placed in a mixin. https://github.com/emberjs/ember.js/blob/v2.12.0/packages/ember-runtime/lib/mixins/controller.js Along with the related deprecation mixin. https://github.com/emberjs/ember.js/blob/v2.12.0/packages/ember-runtime/lib/mixins/controller_content_model_alias_deprecation.js