Big Picture

components.item-display.js

import Ember from 'ember';

export default Ember.Component.extend({
  isModelTwo: Ember.computed('model.id', function() {
    return this.get('model.id') == 2;
  })
});

router.js

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

var Router = Ember.Router.extend({
  location: config.locationType
});

Router.map(function() {
  this.route('item', { path: '/items/:item_id' });
});

export default Router;

routes.application.js

import Ember from 'ember';

export default Ember.Route.extend({
  transition: Ember.on('activate', function() {
    this.transitionTo('/items/2');
  })
});

routes.item.js

import Ember from 'ember';

export default Ember.Route.extend({
  model(params) {
    return {
      id: params.item_id,
      text: `This is item ${params.item_id}`
    }
  },
  renderTemplate() {
    this.render('deprecated'); 
  }
});

templates.components.item-display.hbs

<h1>{{ model.text }}</h1>

{{#if isModelTwo}}
  <p><strong>OMG MODEL TWO!</strong></p>
{{/if}}

templates.deprecated.hbs

{{!-- we are using deprecated.hbs just to proxy to the component --}}
{{item-display model=model}}

twiddle.json

{
  "version": "0.4.9",
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.5.1",
    "ember-data": "https://cdnjs.cloudflare.com/ajax/libs/ember-data.js/1.13.11/ember-data.js",
    "ember-template-compiler": "2.5.1"
  }
}