New Twiddle

controllers.application\.js

import Controller from '@ember/controller';
import { action, computed, set, get, setProperties } from '@ember/object';

export default class ApplicationController extends Controller {
  appName = 'Ember Twiddle';
	init() {
		super.init(...arguments);
    this.set('model', {
    	endsAt: 'some value',
			totalBudget: {
        amount: 'some amount'
      }
    });
  }
	
	@action
	someMethod(campaignGroupType) {
    const endsAt = get(this, 'model.endsAt');
    const amount = get(this, 'model.totalBudget.amount');

    if (endsAt) {
      set(this, '_tempEndsAt', endsAt);
    }
    if (amount) {
      set(this, '_tempAmount', amount);
    }

    switch (campaignGroupType) {
      case 1:
        set(this, 'model.endsAt', '');
        break;
      case 2:
        set(this, 'model.endsAt', this._tempEndsAt);
        break;
      case 3:
        set(this, 'model.endsAt', this._tempEndsAt);
        set(this, 'model.totalBudget.amount', this._tempAmount);
        break;
      default:
    }
  }

	@action
	someOtherMethod(campaignGroupType) {
    const endsAt = get(this, 'model.endsAt');
    const amount = get(this, 'model.totalBudget.amount');

    if (endsAt) {
      set(this, '_tempEndsAt', endsAt);
    }
    if (amount) {
      set(this, '_tempAmount', amount);
    }

    switch (campaignGroupType) {
      case 1:
        endsAt = '';
        break;
      case 2:
        endsAt = this._tempEndsAt;
        break;
      case 3:
        endsAt = this._tempEndsAt;
        amount = this._tempAmount;
        break;
      default:
    }
  }
}

templates.application\.hbs

<h1>Welcome to {{this.appName}}</h1>
Via PROPS:<br>

<br>
	<button {{action this.someMethod 1}}>Set 1</button>
  	<button {{action this.someMethod 2}}>Set 2</button>
    	<button {{action this.someMethod 3}}>Set 3</button>
<br>

_tempEndsAt: {{this._tempEndsAt}}<br>
_tempAmount: {{this._tempAmount}}<br>
model.endsAt: {{this.model.endsAt}}<br>
model.totalBudget.amount: {{this.model.totalBudget.amount}}<br>
<br>
<br>
Via Reference:<br>
<br>
	<button {{action this.someOtherMethod 1}}>Set 1</button>
  	<button {{action this.someOtherMethod 2}}>Set 2</button>
    	<button {{action this.someOtherMethod 3}}>Set 3</button><br>

_tempEndsAt: {{this._tempEndsAt}}<br>
_tempAmount: {{this._tempAmount}}<br>
model.endsAt: {{this.model.endsAt}}<br>
model.totalBudget.amount: {{this.model.totalBudget.amount}}<br>
<br>

twiddle\.json

{
  "version": "0.17.0",
  "EmberENV": {
    "FEATURES": {},
    "_TEMPLATE_ONLY_GLIMMER_COMPONENTS": false,
    "_APPLICATION_TEMPLATE_WRAPPER": true,
    "_JQUERY_INTEGRATION": true
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.js",
    "ember": "3.17.0",
    "ember-template-compiler": "3.17.0",
    "ember-testing": "3.17.0"
  },
  "addons": {
    "@glimmer/component": "1.0.0"
  }
}