model-hook-without-blocking-ui-using-ember-concurrency

controllers.application.js

import Ember from 'ember';

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

controllers.report.js

import Ember from 'ember';

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

models.report.js

import Model from 'ember-data/model';
import attr from 'ember-data/attr';
import { belongsTo, hasMany } from 'ember-data/relationships';

export default Model.extend({
});

router.js

import EmberRouter from '@ember/routing/router';
import config from './config/environment';

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

Router.map(function() {
  this.route('report');
  this.route('home');
});

export default Router;

routes.home.js

import Ember from 'ember';

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

routes.report.js

import Ember from 'ember';
import { task, timeout } from 'ember-concurrency';

export default Ember.Route.extend({
   model(){
  	return {instance:this.get("loadReportData").perform()}; 
  },
  
  loadReportData: task( function *(){
  	yield timeout(1.5 * 1000);
    var result = {"name":"Bolo", "id": "AS-0003"};
    return result;
  })
});

templates.application.hbs

<h1></h1>
{{#link-to "report" }} reports {{/link-to}}
<br><br>
{{#link-to "home" }} home {{/link-to}}

<br>
{{outlet}}
<br>
<br>

templates.home.hbs

<h1>Home</h1>

templates.report.hbs

<h1>Reports</h1>
 {{#if model.instance.isRunning}}
 	loading..
 {{else if model.instance.value}}
 	{{model.instance.value.name}} : {{model.instance.value.id}}
 {{/if}}

<br>
<br>

twiddle.json

{
  "version": "0.15.1",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.js",
    "ember": "2.14.1",
    "ember-template-compiler": "2.14.1",
    "ember-testing": "2.14.1"
  },
  "addons": {
    "ember-data": "3.4.2",
    "ember-concurrency": "0.7.19"
  }
}