contextual_in_action

components.child-component.js

import Ember from 'ember';

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

components.contextual-parent-component.js

import Ember from 'ember';

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

components.parent-component.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'
});

templates.application.hbs

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

<b>Traditional way to pass parameters all the way down to child components:</b>
<br>
{{parent-component childParameter="I am the child" parentParameter="I am the parent"}}
<br>
versus<br>
<br>
<b>Contextual way to pass parameters directly to child components:</b>
<br>
{{#contextual-parent-component parentParameter="I am the contextual parent"}}
	{{child-component childParameter="I am the child rendered contextually within my parent via the router"}}
{{/contextual-parent-component}}

templates.components.child-component.hbs

{{yield}}

Child's passed parameter is {{childParameter}}!

templates.components.contextual-parent-component.hbs

Parent's passed parameter is {{parentsParameter}}!

{{yield}}

templates.components.parent-component.hbs

{{yield}}
Parent's passed parameter is {{parentParameter}}!

{{child-component childParameter=childParameter}}

twiddle.json

{
  "version": "0.13.0",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.16.2",
    "ember-template-compiler": "2.16.2",
    "ember-testing": "2.16.2"
  },
  "addons": {
    "ember-data": "2.16.3"
  }
}