Adapter namespace

adapters.application.js

import DS from 'ember-data';

export default DS.RESTAdapter.extend({
  namespace: '/api/application'
});

adapters.package.js

import ApplicationAdapter from './application';
export default ApplicationAdapter.extend({});

application.controller.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName:'Ember Twiddle'
});

application.route.js

import Ember from 'ember';

export default Ember.Route.extend({
  model: function() {
    var applicationAdapter = this.store.adapterFor('application');
    var packageAdapter = this.store.adapterFor('package');
    
   	applicationAdapter.set('namespace', '/api/package');
    
    return {
      applicationNamespace: applicationAdapter.get('namespace'),
      packageNamespace: packageAdapter.get('namespace')
    };
  }
});

application.template.hbs

<h1>Welcome to {{appName}}</h1>

<div>
	application namespace: {{model.applicationNamespace}}
</div>
<div>
	package namespace: {{model.packageNamespace}}
</div>
<br/>
<div>
these should both ideally be /api/package
</div>

twiddle.json

{
  "version": "0.12.1",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.12.0",
    "ember-template-compiler": "2.12.0",
    "ember-testing": "2.12.0"
  },
  "addons": {
    "ember-data": "2.12.1"
  }
}