Demonstrate Provider/Consumer components

components.consumer-component.js

import Ember from 'ember';
import ProviderComponent from './provider-component';
import { computed } from '@ember/object';

export default Ember.Component.extend({
  tagName: '',
  provider: computed(function() {
    // Need to figure out another way because nearestOfType has a deprecation:
    // use `yield` and contextual components for composition instead
  	return this.nearestOfType(ProviderComponent);
  })
});

components.provider-component.js

import Ember from 'ember';

export default Ember.Component.extend({
  tagName: ''
});

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle',
  
  fooProp: true,
  
  barProp: true,
  
  actions: {
		toggleFoo() {
			this.toggleProperty('fooProp');
		},
    
    toggleBar() {
			this.toggleProperty('barProp');
		}
	}
});

templates.application.hbs

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

{{#provider-component foo=fooProp}}
	Foo: {{grandparent-component tagName=""}}
{{/provider-component}}

<button type="button" {{action "toggleFoo"}}>Toggle Foo</button>

<br>

{{#provider-component foo=barProp}}
	Bar: {{grandparent-component tagName=""}}
{{/provider-component}}

<button type="button" {{action "toggleBar"}}>Toggle Bar</button>

templates.components.child-component.hbs

{{#consumer-component as |provider|}}
	{{provider.foo}}
{{/consumer-component}}

templates.components.consumer-component.hbs

{{yield provider}}

templates.components.grandparent-component.hbs

{{parent-component tagName=""}}

templates.components.parent-component.hbs

{{child-component tagName=""}}

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"
  }
}