customers.hbs

<h3 class="customers_heading">Now in the Customers Index</h3>
<ul class="contacts_list">
     {{#each customer in controller}}
       <li>Name: {{name}}</li>
       <li>Email: {{email}}</li>
     {{/each}}
</ul>

customers.js

DeluciaEmber.Customer = DS.Model.extend({
     name: DS.attr('string'),
     email: DS.attr('string')
});

customers_controller.rb

class Api::V1::CustomersController < ApplicationController
  def index
    @customers = Customer.all
    render json: @customers
  end

  def show
    @customer = Customer.find(params[:id])
    render json: @customer
  end
end

customers_integration_spec.js

module('Customers integration', {
  setup: function () {
    DeluciaEmber.ApplicationAdapter = DS.FixtureAdapter;
    DeluciaEmber.Customer.FIXTURES = [
              {
                  id: 1,
                  name: 'Newguy McSouthEast',
                  email: 'McSouthEast@email.com'
              },
              {
                  id: 2,
                  name: 'Newgirl MacPearlDistrict',
                  email: 'MacPearlDistrict@email.com'
            }
          ]
  },
  teardown: function () {
    DeluciaEmber.reset();
  }
});

test('Customers index page', function () {
    visit('/customers');
    andThen(function () {
        var header_text = find('.customers_heading').text();
        equal(header_text, "Now in the Customers Index",
        'Expected "Now in the Customers Index", got: ' + header_text );
    });
});

test('Renders customers', function () {
    visit('/customers');
    andThen(function () {
        var contacts_length = find('.contacts_list li').length;
        equal(contacts_length, 2,
        "Expected customers to contain 2 items, got: " + contacts_length);
    });
});

customers_route.js

DeluciaEmber.CustomersRoute = Ember.Route.Extend({
  model: function () {
    return this.store.find('customer');
  }
});

router.js.coffee

DeluciaEmber.Router.map ->
  @resource 'customers'

store.js.coffee

DeluciaEmber.Store = DS.Store.extend
  # Override the default adapter with the `DS.ActiveModelAdapter` which
  # is built to work nicely with the ActiveModel::Serializers gem.
  adapter: '-active-model'

DS.RESTAdapter.reopen({ namespace: "api/v1"})