Debugging Route Hook

controllers.foods.js

import Ember from 'ember';

export default Ember.Controller.extend({
  queryParams: ['foodId'],
  foodId: null,
});

controllers.foods.recipes.js

import Ember from 'ember';

export default Ember.Controller.extend({
  recipes: [
    {food: 'New American', name: 'Popcorn', cookingTime: '5min'},
    {food: 'Indian', name: 'Chicken Curry', cookingTime: '30s'},
    {food: 'Italian', name: 'Order Pizza', cookingTime: '20min'},
  ],
  
  filteredRecipes: Ember.computed('model.name', 'recipes', function() {
    let foodName = this.get('model.name');
    if (foodName) {
      return this.get('recipes').filterBy('food', foodName);
    } else {
      return this.get('recipes');
    }
  }),

  recipeName: Ember.computed('model.name', function() {
    return (this.get('model.name') || 'All');
  })
  
});

router.js

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

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

Router.map(function() {
  this.route('foods', function() {
    this.route('recipes');
    this.route('ingredients');
  });
});

export default Router;

routes.foods.js

import Ember from 'ember';

let foods = [
  {id: 1, name: 'Indian'},
  {id: 2, name: 'Italian'},
  {id: 3, name: 'New American'}
];
export default Ember.Route.extend({
  queryParams: {
    foodId: { refreshModel: true }
  },
  model(params) {
    return {
      foods: foods,
      food: foods.findBy('id', +params.foodId)
    };
  }
});

routes.foods.recipes.js

import Ember from 'ember';

export default Ember.Route.extend({
  model() {
    let food = this.modelFor('foods').food;
    return food;
  }
});

routes.index.js

import Ember from 'ember';

export default Ember.Route.extend({
  redirect() {
    this.transitionTo('foods.recipes');
  }
});

styles.app.css

body {
  margin: 12px 16px;
  font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
  font-size: 12pt;
}

.layout {
  display: flex;
  width: 100%;
}
.main {
  flex-grow: 3;
  margin-left: 10px
}
.active {
  font-weight: bold;
}

.main .layout {
  justify-content: space-around;
}


.border {
  border: 1px solid black;
  padding: 5px;
}

templates.application.hbs

<h4>Show recipes or ingredients by food type</h4>
{{outlet}}
<br>
<br>

templates.foods.hbs

<b>Foods</b>

<div class='layout'>
  <div class='border'>
    <ul>
      <li>
        {{#link-to (query-params foodId=null)}}
          All foods
        {{/link-to}}
      </li>
      {{#each model.foods as |food|}}
        <li>
          {{#link-to (query-params foodId=food.id)}}
             {{food.name}}
          {{/link-to}}
        </li>
      {{/each}}
    </ul>
  </div>
  <div class='main'>
    <div class='layout'>
      {{#link-to 'foods.recipes'}}
        Recipes
      {{/link-to}}
      {{#link-to 'foods.ingredients'}}
        Ingredients
      {{/link-to}}
    </div>
    {{outlet}}
  </div>
</div>

templates.foods.ingredients.hbs

Ingredients would go here

templates.foods.recipes.hbs

{{!-- foods/recipes.hbs--}}
<div>
  Showing {{recipeName}} recipes
</div>
<br/>
{{#each filteredRecipes as |recipe|}}
  <div>
    {{recipe.name}}
  </div>
{{/each}}

twiddle.json

{
  "version": "0.11.0",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.10.2",
    "ember-data": "2.11.0",
    "ember-template-compiler": "2.10.2",
    "ember-testing": "2.10.2"
  },
  "addons": {}
}