prefetch-qp

controllers.application.js

import Ember from 'ember';

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

controllers.test.child.js

import Ember from 'ember';

export default Ember.Controller.extend({
  queryParams: ['hey'],
  hey: null,
  count: 0,
  actions: {
    updateHey() {
      this.incrementProperty('count');
      this.set('hey', this.get('count'));
    }
  }
});

controllers.test.js

import Ember from 'ember';

export default Ember.Controller.extend({
});

router.js

import Ember from 'ember';
import config from './config/environment';

const Router = Ember.Router.extend({
  location: 'none',
  rootURL: config.rootURL
});

Router.map(function() {
  this.route('index', { path: '/' });

  this.route('test', { resetNamespace: true }, function()  {
    this.route('child', { path: '/' });
  });
});

export default Router;

routes.index.js

import Ember from 'ember';

export default Ember.Route.extend({
  prefetch() {
    console.log('prefetch index');
    return Ember.RSVP.resolve();
  }
});

routes.test.child.js

import Ember from 'ember';

export default Ember.Route.extend({
  queryParams: {
    hey: {
      refreshModel: true
    }
  },
  count: 0,
  prefetch() {
    console.log('prefetch test');
    this.incrementProperty('count');
    return Ember.RSVP.resolve({
      foo: this.get('count')
    });
  }
});

routes.test.js

import Ember from 'ember';

export default Ember.Route.extend({
  resetController(controller, isExiting) {
    if (isExiting) {
      controller.set('hey', null);
    }
  },
});

templates.application.hbs

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

templates.index.hbs

{{#link-to "test"}}Test{{/link-to}}

templates.test.child.hbs

<p>Foo: {{model.foo}}</p>

<button {{action "updateHey"}}>Update hey</button>

templates.test.hbs

{{#link-to "index"}}Index{{/link-to}}

{{outlet}}

twiddle.json

{
  "version": "0.10.6",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.7.3",
    "ember-data": "2.7.0",
    "ember-template-compiler": "2.7.3",
    "ember-testing": "2.7.3"
  },
  "addons": {
    "ember-prefetch": "2.1.0"
  }
}