multiple requests hasMany relationship

I simplified code to show relevant issue.

Ember data models:

var page = DS.Model.extend({
    categories: DS.hasMany('category', {async: true}),
});

var category= DS.Model.extend({
    page: DS.belongsTo('page', {async: true})
});

In Parse I have relevant columns:

I have page pointer type from category -> page
I have categories array of category objectId's on each page.

When I have instance of page and try this method:

page.get('categories')

or call (in template to iterate):

page.categories

Parse data adapter makes individual GET requests for each categories.
ie: say for example Page has categories array set as ["dyutrdf23", "44fdfdf"]
will make two requests to get the categories.

I modified model hook on Categories route to make one request to fetch all page categories:

    var page = this.modelFor('page');
    return this.store.find('category', {
        where: {
            page: {
            "__type":  "Pointer",
            "className": "Page",
            "objectId": page.get('id')
            }
        }
    });

This works, I used it from https://github.com/clintjhill/ember-parse-adapter/blob/master/addon/adapters/application.js#L130.

However, I don't understand why this method (findHasMany) is not being called (for one request with query as opposed to individual requests) when I make the page.get('categories').

Maybe I've overlooked something with Ember data/Ember parse adapter here.

Any feedback appreciated. Thank you.

[joshfester]

I can confirm that hasMany relationships have never worked for me either. Currently I just use custom queries instead of a relationship

Thanks.