Question

我使用Ember 2.4.1并尝试使用自引用模型构建分层树。

这是我的Ember模型

/categories

带有嵌入数据的路由{"categories":[ { "id":4, "name":"Root element w/o children", "type":"Category", "children":[] }, { "id":5, "name":"Root element with a child", "type":"Category", "children":[ { "id":6, "name":"A child", "type":"Category", "children":[] } ] } ]}中的服务器响应（我在Ember端使用RESTAdapter）：

Assertion Failed: You looked up the 'children' relationship on a 'category' with id 5 but some of the associated records were not loaded. Either make sure they are all loaded together with the parent record, or specify that the relationship is async (DS.hasMany({ async: true }))

正如您所看到的，带有ID 5的类别具有ID为6的子项并且已嵌入。但是当Ember加载页面时出现错误：{categories: [{id:4, …}, {id:5, …}, {id:6, …}]}

如果我在JSON-root中包含id为6的类别，如async: true错误将消失，但我不知道为什么我需要在这种情况下嵌入。可能我不明白嵌入在Ember中是如何工作的。

所以我想问一下如何使用嵌入式响应正确使用Ember Data，而不使用// app/serializers/category.js import DS from 'ember-data'; export default DS.RESTSerializer.extend(DS.EmbeddedRecordsMixin, { attrs: { children: { embedded: 'always' } } });重复它。

UPD @TheCompiler在评论中回答了我的问题。使用mixin添加序列化程序可以解决我的问题：

$ kubectl version
Client Version: version.Info{Major:"1", Minor:"1", GitVersion:"v1.1.2", GitCommit:"3085895b8a70a3d985e9320a098e74f545546171", GitTreeState:"clean"}
Server Version: version.Info{Major:"1", Minor:"1", GitVersion:"v1.1.2", GitCommit:"3085895b8a70a3d985e9320a098e74f545546171", GitTreeState:"clean"}

Answer 1

无需复制记录。 Rest Adapter对嵌套的JSON对象不起作用。尝试格式化这样的数据：

{"categories":[
    {
        "id":4,
        "name":"Root element w/o children",
        "type":"Category",
        "children":[]
    },
    {
        "id":5,
        "name":"Root element with a child",
        "type":"Category",
        "children":[6]
    },
    {
        "id":6,
        "name":"A child",
        "type":"Category",
        "children":[]
    }
]}

Ember Data与嵌入数据有很多关系

1 个答案: