Question

在婚礼中,从根深蒂固的儿童观点来看,是否容易获得根本观点。集装箱电文。我把根子和子子子孙的财产捆起来:

Ember.ContainerView.create {

   childViews: [ child1 ]

   value: null

   child1: Ember.ContainerView.create {

       childViews: [ subchild1 ]

       subchild1 : Ember.View.create {

            valueBinding: "parentView.parentView.value"

       }
   }
}

我很想把子孙中的价值与价值挂钩,但我发现,我呼吁

parentView.parentView.parentView.property

并非非常奇怪。

Answer 1

您可使用<代码>nearestWithProperty方法。例如见下面。

Ember.ContainerView.create({
   childViews: [ child1 ],
   value: null,
   isRootView: true,

   child1: Ember.ContainerView.extend({
       childViews: [ subchild1 ],

       subchild1 : Ember.View.extend({
           rootView: Ember.computed(function() {
               return this.nearestWithProperty( isRootView );
           }).property().cacheable(),
           valueBinding: "rootView.value"
       })
   })
});

Answer 2

There is no rootView property mentioned in the API docs. What if value was defined in child1? You would still have the same problem of having to reference parentView.value. value should actually be defined in a controller and your subchild1 valueBinding should bind to the property in the controller.

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