so#53874375

components.child-component.js

import Ember from 'ember';

export default Ember.Component.extend({
  organization: {
		id: 'facebook'
  },
  
  actions: {
    favoriteWasClicked() {
      const organization = this.get('organization');
      // organization.id value equal to 'facebook' here in my app
      // we're gonna send its id to parent component "orgs" like an argument of clicked method
      this.clicked(organization);
    }
  }
});

components.parent-component.js

import Ember from 'ember';

export default Ember.Component.extend({
  actions: {
		favoriteClicked(orgId) {
			alert(orgId)
    }
  }
});

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>
{{parent-component}}
<br>
<br>

templates.components.child-component.hbs

<button onclick={{action 'favoriteWasClicked'}}>Trigger event to parent</button>

templates.components.parent-component.hbs

{{child-component
  clicked=(action "favoriteClicked" value="id")
}}

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"
  }
}