New Twiddle

components.display-numbers.js

import Ember from 'ember';

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

components.filter-results.js

import Ember from 'ember';

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

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle',
  filteredModel: undefined,
  
  actions: {
    filter(type) {
      const model = this.get('model');
      let filteredModel;
      switch(type) {
        case 'even':
        	filteredModel = model.filter(i => i % 2 === 0);
        	break;
        case 'odd':
          filteredModel = model.filter(i => i % 2 === 1);
          break;
        default:
          filteredModel = model;
      }
      this.set('filteredModel', filteredModel);
    }
  }
});

routes.application.js

import Ember from 'ember';

export default Ember.Route.extend({
  model() {
    return [1, 2, 3, 4, 5, 6, 7, 8, 9, 10];
  },
  
  setupController(controller, model) {
    this._super(...arguments);
    // Initialize filteredModel to be the same as model
    controller.set('filteredModel', model);
  }
});

templates.application.hbs

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

{{filter-results filter=(action "filter")}}
{{display-numbers model=filteredModel}}

<br>
<br>

templates.components.display-numbers.hbs

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

templates.components.filter-results.hbs

<button {{action filter "even"}}>Even Numbers</button>
<button {{action filter "odd"}}>Odd Numbers</button>
<button {{action filter ""}}>All Numbers</button>

twiddle.json

{
  "version": "0.15.0",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.js",
    "ember": "3.2.2",
    "ember-template-compiler": "3.2.2",
    "ember-testing": "3.2.2"
  },
  "addons": {
    "ember-data": "3.2.0"
  }
}