Question

我使用的是ember-data 12 我有两个模型，它们共同载入：

App.Store = DS.Store.extend({
    revision: 12,
    adapter: App.Adapter.create()
});

App.Propose = DS.Model.extend({
    meeting: DS.belongsTo('App.Meeting'),   
    time: DS.attr('string'), 
});


App.Meeting = DS.Model.extend({

    name: DS.attr('string'),
    proposes: DS.hasMany('App.Propose'),


});

我如何通过建议模型与某些计算字段进行会面：

App.Propose = DS.Model.extend({
        meeting: DS.belongsTo('App.Meeting'),   
        time: DS.attr('string'), 
        someCalc:function(){
           this.get('meeting').get('name') //I want that. but its not worked
        }
    });

Answer 1

你这样做的方式是：

App.Propose = DS.Model.extend({
     meeting: DS.belongsTo('App.Meeting'),   
     time: DS.attr('string'), 
     someCalc:function(){
        return this.get('meeting.name'); // or do whatever operation you need in here
     }.property('meeting.name')
 });

但是Ember Data已经发展了很多，这在Beta 2及更高版本中不起作用（如此）。

如何从Ember-data获取父模型

1 个答案: