Looking up a singleton with Ember Data - ember.js

Question

Is there a conventional way to look up a singleton in Ember Data? I've set up my adapter for my GameState model from these instructions (under "Singular"): https://stackoverflow.com/a/23974804/173630
Now, when I fetch the GameState I'd like to be able to do this:
store.find('gameState');
But that initiates a findAll request type in Ember Data, which expects an array, not an object.
Another option I have is to do something like this:
store.find('gameState', 'mine');
The mine param is ignored, but this will successfully fetch and load my GameState. The downside here is that Ember Data creates an extra GameState instance in my store with an id of mine. Is there any way to prevent this?
I'm using Ember Data 1.0.0-beta.11.
Here's what my model looks like:
var GameState = DS.Model.extend({
currentPuzzle: DS.belongsTo('puzzle'),
currentRound: DS.belongsTo('puzzleRound'),
currentInventory: DS.attr('number'),
moves: DS.hasMany('move', {async: true}),
createdAt: DS.attr('date'),
updatedAt: DS.attr('date')
});

Answer 1

No, unfortunately that's a side affect of doing it like this. You can do a few different things here:
Hack it out using private methods/members
Switch to a findAll/findQuery approach changing your api and then only returning the first item from the results (which would be the only result).
Make a boring ajax call, and sideload the record.
findAll/findQuery - pain cause you have to change your api
return this.store.find('foo').then(function(records){
return records.get('firstObject');
});
jquery ajax sideload
var store = this.store;
return $.ajax('foo').then(function(data){
return store.push('foo', data); // push returns the record
});
http://emberjs.com/api/data/classes/DS.Store.html#method_push