Todo simple app

components.add-todo.js

// app/components/add-todo.js

import Ember from 'ember';

export default Ember.Component.extend({

  actions: {
    submit() {
      const text = this.get('text');
      this.get('onAdd')(text);
    }
  }

});

components.todo-widget.js

// app/components/todo-widget.js

import Ember from 'ember';

export default Ember.Component.extend({

  actions: {
    addTodo(text) {
      this.get('todos').pushObject({ text: text });
    }
  }

});

controllers.application.js

import Ember from 'ember';

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

router.js

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

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

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

export default Router;

routes.todos.js

import Ember from 'ember';

export default Ember.Route.extend({

  model() {
    return [
      { text: "Erase AngularJS" },
      { text: "Install Ember.JS" },
      { text: "Enjoy a new life" }
    ]
  }

});

templates.application.hbs

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

templates.components.add-todo.hbs

<form {{action "submit" on="submit"}}>
  {{input value=text}} <button type="submit">OK</button>
</form>

templates.components.todo-widget.hbs

{{! app/templates/components/todo-widget.hbs }}

{{add-todo onAdd=(action 'addTodo')}}

<ul>
{{#each todos as |todo|}}
  <li>{{ todo.text }}</li>
{{/each}}
</ul>

templates.todos.hbs

{{todo-widget todos=model}}

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": "2.5.1",
    "ember-data": "2.5.2",
    "ember-template-compiler": "2.5.1"
  }
}