Expandable table example

components.repositories-row\.js

import Component from '@glimmer/component';
import {
  tracked
} from '@glimmer/tracking';
import {
  action
} from '@ember/object';

export default class extends Component {
  @tracked showDetail = false;

  @action
  toggleDetail() {
    this.showDetail = !this.showDetail;
  }
}

controllers.application\.js

import Controller from '@ember/controller';

export default class ApplicationController extends Controller {
  appName = 'Ember Twiddle';

  get filteredRepositories() {
    return [{
      name: 'hello',
      url: 'https://google',
      isPrivate: 'yes',
      language: 'en',
      openIssues: 1240
    },{
      name: 'hello',
      url: 'https://google',
      isPrivate: 'yes',
      language: 'en',
      openIssues: 1240
    }];
  }
}

templates.application\.hbs

<table>
<tr>
<th>name</th>
<th>url</th>
<th>language</th>
<th>private</th>
<th>open issues</th>
</tr>
{{#each this.filteredRepositories as |repository|}}
  <RepositoriesRow @r={{repository}}/>
{{/each}}
</table>

templates.components.repositories-row\.hbs

<tr>
    <td>{{@r.name}}</td>
    <td><a href={{@r.url}}>{{@r.url}}</a></td>
    <td>{{@r.language}}</td>
    <td>{{@r.isPrivate}}</td>
    <td>{{@r.openIssues}}</td>
    <td><a {{on "click" this.toggleDetail}}>Show More</a></td>
</tr>
{{#if this.showDetail}}
<tr class="detail">
    <td colspan="3">
      <div>
        <table class="table">
          <tr>
            <td>Detail 1</td><td>Detail 2</td>
            <td>Detail 1</td><td>Detail 2</td>
          </tr>
        </table>
      </div>
    </td>
  </tr>
{{/if}}

twiddle\.json

{
  "version": "0.17.1",
  "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/3.5.1/jquery.js",
    "ember": "3.18.1",
    "ember-template-compiler": "3.18.1",
    "ember-testing": "3.18.1"
  },
  "addons": {
    "@glimmer/component": "1.0.0"
  }
}