Route hooks evaluation order

controllers.application.js

import Ember from 'ember';

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

router.js

import EmberRouter from '@ember/routing/router';
import config from './config/environment';

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

Router.map(function() {
  this.route('parent', { path: '/parent' }, function() {
    this.route('child', { path: '/child' });
    this.route('rejected-child');
  });
  this.route('four-oh-four');
});

export default Router;

routes.four-oh-four.js

import Ember from 'ember';

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

routes.parent.child.js

import Ember from 'ember';

export default Ember.Route.extend({
  beforeModel(/* transition */) {
    console.log('child - beforeModel');
  },
  
  model() {
  	console.log("child - model");
    return {};
	},
  
  afterModel(model) {
  	console.log("child - afterModel,", model);
	}
});

routes.parent.js

import Ember from 'ember';

export default Ember.Route.extend({
  beforeModel(/* transition */) {
    console.log('parent - beforeModel');
  },
  
  model() {
  	console.log("parent - model");
    return {};
	},
  
  afterModel(model) {
  	console.log("parent - afterModel");
	}
});

routes.parent.rejected-child.js

import Ember from 'ember';

export default Ember.Route.extend({
  beforeModel(/* transition */) {
    console.log('child - beforeModel');
  },
  
  model() {
  	console.log("child - model");
    return Promise.reject();
	},
  
  afterModel(model) {
  	console.log("child - afterModel,", model);
	},
  
  actions: {
    error(error, transition) {
      console.warn("error action", error);
      this.transitionTo('four-oh-four');
    }
  }
});

templates.application.hbs

<h1>Welcome to {{appName}}</h1>
<br>
{{link-to "/parent/child" "parent.child"}}
<br>
{{link-to "/parent/rejected-child" "parent.rejected-child"}}
<br>
{{outlet}}
<br>
<br>

templates.four-oh-four.hbs

<p>404</p>

templates.parent.child.hbs

<p>child</p>

templates.parent.hbs

<p>parent</p>
<br>
{{outlet}}

templates.parent.rejected-child.hbs

<p>rejected child</p>

twiddle.json

{
  "version": "0.15.1",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.js",
    "ember": "3.4.3",
    "ember-template-compiler": "3.4.3",
    "ember-testing": "3.4.3"
  },
  "addons": {
    "ember-data": "3.4.2"
  }
}