HasMany relationships between sideloaded models - ember.js

Question

Here's my Ember-Data model:
Lrt.Option = DS.Model.extend({
option_relation_value: hasMany('option')
});
Here is an example of the JSON: (Shortened for the sake of this question)
{
"optionGroups": [],
"optionSubGroups": [
{
"id": "3",
"optionType": [
"80",
"81",
"82",
"83",
"84",
"248",
"278"
],
"title": "Option Group for 80"
}
],
"options": [
{
"id": "45",
"option_relation_value": [
"80"
]
},
{
"id": "80",
"option_relation_value": []
}
]
}
There are also "OptionGroup" and "OptionSubGroup" models which are sideloading options in.
The issue I'm having is that after adding in the 'hasMany' into the model, I can no longer do query the store for Options like this:
this.get('store').find('option')
It simply returns "0", however in the Ember Inspector, I get 400+ entries so I know the data loaded.
When using the chrome inspector and break on ALL Exceptions, it breaks on line 2246 of Ember-Data at the following line:
2246: Ember.assert('The id ' + id + ' has already been used with another record of type ' + type.toString() + '.', !id || !idToRecord[id]);
The error is:
"Cannot call method 'toString' of undefined"
"type" in this line is 'undefined'.
What am I doing wrong with this hasMany relationship?
I am using Ember-Data 1.0 Beta 2.

Answer 1

Technically, this is not side loading, it's really more like nested loading. That may have something to do with it.
For true side loading you'd want a structure like this as your outer SON response :
{
"option" : {
"id" : 3,
...
"options" : [45,80]
}
"options" : [
{ "id":45 , ... },
{ "id":80 , ... }
]
}
Here are the docs about JSON conventions : http://emberjs.com/guides/models/connecting-to-an-http-server/#toc_json-conventions The comments are an example of side loading.
I know that this works for separate model structures (post -> comment), but I'm not sure about self referential tree type structures.