英文原文: http://emberjs.com/guides/routing/setting-up-a-controller/

设置控制器（Setting Up a Controller）

Changing the URL may also change which template is displayed on screen. Templates, however, are usually only useful if they have some source of information to display.

URL的改变同时也可能改变显示的模板。而模板只有当其搭载了需要呈现的信息才有用。

In Ember.js, a template retrieves information to display from a controller.

在Ember.js中，模板从控制器中过去需要呈现的信息。

Two built-in controllers—Ember.ObjectController and Ember.ArrayController—make it easy for a controller to present a model’s properties to a template, along with any additional display-specific properties.

内置的两个控制器Ember.ObjectController和Ember.ArrayController，使控制器可以非常方便的呈现模型的属性和其他一些附加的用于显示的属性到模板中去。

To tell one of these controllers which model to present, set its model property in the route handler’s setupController hook.

通过在路由处理器的setupController钩子中设置控制器的model属性，来设置控制器所要呈现的模型。

  1. App.Router.map(function() {
  2.   this.resource('post', { path: '/posts/:post_id' });
  3. });
  5. App.PostRoute = Ember.Route.extend({
  6.   // The code below is the default behavior, so if this is all you
  7.   // need, you do not need to provide a setupController implementation
  8.   // at all.
  9.   setupController: function(controller, model) {
  10.     controller.set('model', model);
  11.   }
  12. });

The setupController hook receives the route handler’s associated controller as its first argument. In this case, the PostRoute‘s setupController receives the application’s instance of App.PostController.

setupController钩子将路由处理器关联的控制器作为第一个参数。上例中PostRoute的setupController的第一个参数是应用中App.PostController的实例。

To specify a controller other than the default, set the route’s controllerName property:

如果需要指定一个非缺省名称的控制器给路由，那么设置controllerName属性即可：

  1. App.SpecialPostRoute = Ember.Route.extend({
  2.   controllerName: 'post'
  3. });

As a second argument, it receives the route handler’s model. For more information, see Specifying a Route’s Model.

而第二个参数是路由处理器的模型。更多相关信息请参看指定路由的模型一节。

The default setupController hook sets the model property of the associated controller to the route handler’s model.

默认的setupController钩子将关联的控制器的model设置为路由处理器的模型。

If you want to configure a controller other than the controller associated with the route handler, use the controllerFor method:

如果系统设置其他的控制器来取代路由处理器关联的控制器，可以使用controllerFor方法。

  1. App.PostRoute = Ember.Route.extend({
  2.   setupController: function(controller, model) {
  3.     this.controllerFor('topPost').set('model', model);
  4.   }
  5. });