query-params-debugging

controllers.application.js

import Ember from 'ember';

console.clear()

export default Ember.Controller.extend({
  appName: 'Ember Twiddle',
  clearLog() {
    this.get('log').clear()
  },
  foo: undefined,
  incrementFoo() {
    this.get('log').append('foo++')
    const foo = parseInt(this.get('foo') || 0)
    const router =  this.get('router')
    router.transitionTo(router.currentRouteName, { queryParams: { foo: foo + 1 } })
  },
  log: Ember.inject.service(),
  queryParams: ['foo'],
  router: Ember.computed(function()  {
    return Ember.getOwner(this).lookup('router:main')
  })
});

controllers.child.js

import Ember from 'ember';

export default Ember.Controller.extend({
  bar: undefined,
  queryParams: ['bar'],
});

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('child')
});

export default Router;

routes.application.js

import Ember from 'ember';

export default Ember.Route.extend({
  log: Ember.inject.service(),
  init() {
    this._super(...arguments)
    this.get('log').append(`Ember ${Ember.VERSION}`)
  },
  beforeModel() {
    this.get('log').append('route:application#beforeModel')
  },
  model(params, transition) {
    this.get('log').append(`route:application#model ${transition.queryParams.foo}`)
  },
  afterModel() {
    this.get('log').append('route:application#afterModel')
  },
  setupController() {
    this.get('log').append('route:application#setupController')
    return this._super(...arguments)
  },
  queryParams: {
    foo: {
      refreshModel: true
    }
  }
});

routes.child.js

import Ember from 'ember';

export default Ember.Route.extend({
  log: Ember.inject.service(),
  beforeModel() {
    this.get('log').append('route:child#beforeModel')
  },
  model(params, transition) {
    this.get('log').append(`route:child#model ${transition.queryParams.foo}`)
  },
  afterModel() {
    this.get('log').append('route:child#afterModel')
  },
  setupController() {
    this.get('log').append('route:child#setupController')
    return this._super(...arguments)
  },
});

services.log.js

import Ember from 'ember';

export default Ember.Service.extend({
  content: Ember.computed(function() {
    return []
  }),
  
  append(msg) {
    this.set('content', this.get('content').concat(msg))
  },
  
  clear() {
    this.set('content', [])
  },
});

styles.app.css

body {
  margin: 12px 16px;
  font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
  font-size: 12pt;
}

a, a:focus, a:hover, a:visited {
  color: blue;
}

a.active {
  color: green;
}

templates.application.hbs

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

<nav>
  {{link-to 'Index' 'index'}}
  {{link-to 'Child' 'child'}}
</nav>

<section>
  <label>
    foo
    <output>{{foo}}</output>
  </label>
  
  <button onclick={{action incrementFoo}}>foo++</button>
</section>

<section>
  <h3>
    Log
    <button onclick={{action clearLog}}>Clear</button>
  </h3>
  <ol>
    {{#each log.content as |i|}}
    <li>{{i}}</li>
    {{/each}}
  </ol>
</section>

<main>
  {{outlet}}
</main>

templates.child.hbs

Child

templates.index.hbs

Index

twiddle.json

{
  "version": "0.13.1",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.16.2",
    "ember-template-compiler": "2.16.2",
    "ember-testing": "2.16.2"
  },
  "addons": {
    "ember-data": "2.16.3"
  }
}