download model in route

controllers.application.js

import Ember from 'ember';

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

controllers.second.js

import Ember from 'ember';

export default Ember.Controller.extend({
  
  list: [],
 
  downloadedList: Ember.observer('model', function() {
    console.log('it is called');
    const reposUrl = this.get('model.repos_url');
    let buildList = []
    let list = this.get('list');
    
    Ember.$.get(reposUrl).then(
      (repos) => {
        console.log(repos);
        repos.forEach((repo) => {console.log(repo);buildList.push(repo.name);});
        }
      ).then(() => this.set('list', buildList));
  })
});

router.js

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

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

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

export default Router;

routes.index.js

import Ember from 'ember';

export default Ember.Route.extend({

  model() {
  return Ember.$.get('https://api.github.com/users/dulichan').then(data => Ember.$.get(data.repos_url).then(repos => repos.map(repo => repo.name))) 
  }
  
});

routes.second.js

import Ember from 'ember';

export default Ember.Route.extend({
  
  model() {
    return Ember.$.get('https://api.github.com/users/dulichan')
  }
});

templates.application.hbs

<h1>Application</h1>
{{link-to 'Home' 'index'}} | {{link-to 'Second Example' 'second'}}
<br>
<br>
{{outlet}}
<br>
<br>

templates.index.hbs

<ul>
{{#each model as |name|}}
  <li>{{name}}</li>
{{/each}}
</ul>

templates.loading.hbs

<p>Loading...</p>

templates.second.hbs

<h2>Second page</h2>

<p>repos_url from model: {{model.repos_url}}</p>

<p>length of the list: {{list.length}}</p>

<ul>
{{#each list as |name|}}
  <li>{{name}}</li>
{{/each}}
</ul>

twiddle.json

{
  "version": "0.8.0",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.5.0",
    "ember-data": "2.5.1",
    "ember-template-compiler": "2.5.0"
  }
}