Ember-data, hasMany relationship, loading sub-collection, nested route

Question

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');
})

The JSON model returned by the server looks like

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

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');

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')

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

GET : /comments?ids%all_ids_appended_here

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

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

 GET /posts/post_id/comments

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 ?

Thanks

Answer 1

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.