Get data from child

components.my-child.js

import Ember from 'ember';

export default Ember.Component.extend({
   didReceiveAttrs() {
    //debugger;
    this._super(...arguments);
  }
});

components.my-parent.js

import Ember from 'ember';

export default Ember.Component.extend({
  currentValue: false,
  value: null,
  
  init() {
    this._super(...arguments);
    this.set('value', 'Start value');
  },

  actions: {
    addValue(data) {
      console.log(data);
      this.toggleProperty('currentValue');
      this.set('value', data);
    }
  }
});

components.my-sub-child.js

import Ember from 'ember';

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

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Get data from child'
});

templates.application.hbs

<h1>{{appName}}</h1>
<MyParent/>

templates.components.my-child.hbs

<form>
	{{input value=data}}
	<button {{action passDataToParent data}}>Add & toggle</button>
  
{{my-sub-child passDataToParent=(action "addValue")}}
</form>

templates.components.my-parent.hbs

Current Value: {{currentValue}}<br>
Input Value: {{value}}<br>
{{my-child passDataToParent=(action "addValue")}}
{{yield}}

templates.components.my-sub-child.hbs

{{yield}}

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"
  }
}