页面视图中的按钮操作指向

页面模板中的操作交互按钮，默认指向该模板对应的控制器。当然也可以指向相对应的路由和视图，只需要在这些类里面定义该操作处理函数即可，例如

{{#if isExpanded}}
  <div class='body'>{{body}}</div>
  <button {{action 'contract'}}>Contract</button>
{{else}}
  <button {{action 'expand'}}>Show More...</button>
{{/if}}

App.PostController = Ember.ObjectController.extend({
  // initial value
  isExpanded: false,

  actions: {
    expand: function() {
      this.set('isExpanded', true);
    },

    contract: function() {
      this.set('isExpanded', false);
    }
  }
});

App.PostRoute = Ember.Route.extend({
  actions: {
    expand: function() {
      this.controller.set('isExpanded', true);
    },

    contract: function() {
      this.controller.set('isExpanded', false);
    }
  }
});

App.PostsIndexView = Ember.View.extend({
  actions: {
    select: function(post) {
      // do your business.
    }
  }
});