Ember Data one to many relationship not working

I am pretty new to ember but I am wondering if this is an issue with my logic or if there is something not functioning correctly in ember.

When I try model.get('profile') I get null.

I have been able to retrieve a profile model like so: this.store.find('profile', 17); Also I can add a profile_id attribute to the location model and then use it

var location = this.modelFor('location');
var profile =  this.store.find('profile', 17);

but from what I can find in the documentation I should be able to use .get('profile') on a location object to get its profile.

The strange thing is that my attachments relationship (location has many attachments) works perfectly.

Am I missing something? What am I doing wrong that is causing this relationship to fail?

I have three models:

locatons->

export default DS.Model.extend({
  image: DS.attr('string'),
  latitude:DS.attr('string'),
  longitude:DS.attr('string'),
  outlets:DS.attr('string'),
  parking:DS.attr('string'),
  internet:DS.attr('string'),
  credit_cards:DS.attr('string'),
  share_url:DS.attr('string'),
  roaster:DS.attr('string'),
  about:DS.attr('string'),
  name: DS.attr('string'),
  address: DS.attr('string'),
  images: DS.attr('string'),
  attachments: DS.hasMany('attachment'),
  profile: DS.belongsTo('profile'),
  curator_image: DS.attr('string'),
  curator_about: DS.attr('string'),
  curator_name: DS.attr('string'),
  style_image_url: function(){
    return "background-image:url('" + this.get("image") + "')";
  }.property("image"),
  style_profile_image_url: function(){
    return "background-image:url('" + this.get("curator_image") + "')";
  }.property("curator_image"),
});

attachments ->

export default DS.Model.extend({
    location: DS.belongsTo('location'),
    image:DS.attr('string')
});

profiles ->

export default DS.Model.extend({
    location: DS.hasMany('location'),
    name:DS.attr('string'),
    about:DS.attr('string'),
    image:DS.attr('string'),
});

here is a sample response from the server: locations.json

{
    attachments: [
    {
        id: 254,
        image: "http://ift.tt/1CWzYEd"
    },
    {
        id: 250,
        image: "http://ift.tt/1IsxThQ"
    }],
    locations: [
    {
        id: 12,
        latitude: "45.550346",
        longitude: "-122.666584",
        address: "3808 North Williams Avenue, Portland, OR 97212, USA",
        outlets_text: "Yes",
        internet_text: "No",
        roaster: "Ristretto Roasters",
        parking_text: "Yes",
        credit_cards: true,
        image: "http://ift.tt/1CWA0vN",
        name: "Ristretto",
        twitter_username: null,
        curator_image: "http://ift.tt/1CWzYEf",
        curator_name: "Jack White",
        curator_about: "this is a test this is a test this is a test this is a test this is a test this is a test this is a test this is a test this is a test this is a test this is a test this is a test this is a test ",
        cprofile_id: 17,
        attachment_ids: [
            30
        ]
    },
    ...

Routes: /routes/location.js

export default Ember.Route.extend({
    model: function(params) {
        return this.store.find('location', params.location_id);
    }
});

/routes/location/index

export default Ember.Route.extend({
    model: function() {
        return this.modelFor('location').get('profile');
    }
});