New Twiddle

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle',
  
  actions: {
    update(key, value) {
     console.log(`updating ${key} to ${value}`);
     this.model.set(`variables.${key}`, value);
    }
  }
});

routes.application.js

import Ember from 'ember';

export default Ember.Route.extend({
  model() {
    return Ember.Object.create({
      "variables": {
        "foo": "bar"
      },
      "pages": [
        {
          "route": "/",
          "body": [
            {
              "type": "partial",
              "name": "header"
            },
            {
              "type": "tag",
              "name": "main",
              "children": [
                {
                  "type": "tag",
                  "name": "p",
                  "attributes": {
                    "class": "py-4"
                  },
                  "children": [
                    {
                      "type": "text",
                      "value": "lorem ipsum blah blah blah"
                    }
                  ]
                }
              ]
            }
          ]
        }
      ]
    });
  }
});

templates.application.hbs

<ul>
  {{#each-in model.variables as |key value|}}
    <label>{{key}}</label>
    {{input key-up=(action "update" key value=target.value) value=value}}
  {{/each-in}}
</ul>

<div>
	<label>current state</label>
  {{#each-in model.variables as |k v|}}
  	[ {{k}} - {{v}} ]
  {{/each-in}}
</div>
{{outlet}}

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"
  }
}