Ember-data，hasMany关系，加载子集合，嵌套路由

问题描述

我需要使用ember数据及其默认的REST适配器从rails后端加载模型。我有一个与另一个有很多关系的模型：

I need to load a model from a rails backend with ember-data and its default REST adaptor. I have a model that has many relationship with another one :

App.Post = DS.Model.extend({
    title: DS.attr("String");
    comments: DS.hasMany('App.Comment', {keys: 'post_ids', embbeded: true});
})

App.Post = DS.Model.extend({
    body: DS.attr("String");
    post: DS.belongsTo('App.Post');
})

服务器返回的JSON模型看起来像

The JSON model returned by the server looks like

{
  title: "a title",
  comment_ids: [1,2,3,4]
}

为了有效率，我需要首先加载所有的帖子，而不必加载相关的注释。我使用

I need at first to load all the posts without necessarly loading the associated comments, for efficiency reason. I do this with

App.store.findAll('App.Post');

而且，当我选择一个特定的帖子我需要加载所有的评论。在ember数据文档中，据说我只需要调用

And, when I select a specific post I need to load all the comments. In the ember-data documentation, it's said that I just need to call

a_specific_post.get('comments')

当我这样做时，我得到一个很长的URL，所有的评论ids：

When, I do this I get a very long url with all comment ids :

GET : /comments?ids%all_ids_appended_here

当然这不行，如果我有一千个评论，网址很长。

Of course it doesn't work and if I have a thousand of comment the url is very very long.

可以获得匹配rails的嵌套路由模型的请求吗？ ：

Is it possible to get a request that matches nested routing model of rails ? :

 GET /posts/post_id/comments

插件路由管理器似乎是这样的路由。我可以用ember数据和如何使用它？

The plugin route-manager https://github.com/ghempton/ember-routemanager seems to this kind of routing. Can I use it with ember-data and how ?

谢谢

推荐答案

p>如果您只指定注释ID，我不确定嵌入式是你想要的。期待完整的注释对象在post模型的JSON表示中被传递。

I'm not sure embedded is what you want if you're only specifying comment IDs. It is expecting full comment objects to be passed in the JSON representation of the post model.

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