table with filter and pagination

controllers.application.js

import Ember from 'ember';
import { computed } from '@ember/object';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle',
  items: [
    { firstName: 'Max', lastName: 'Mustermann', email: '[email protected]' },
    { firstName: 'Sven', lastName: 'Adam', email: '[email protected]' },
    { firstName: 'Karl', lastName: 'Käfer', email: '[email protected]' },
  ],
  filteredItems: computed('filterFirstName', 'filterLastName', 'filterEmail', 'items.[]', function() {
    return this.items.filter((item) => {
      return (!this.filterFirstName || item.firstName.includes(this.filterFirstName)) &&
             (!this.filterLastName || item.lastName.includes(this.filterLastName)) &&
             (!this.filterEmail || item.email.includes(this.filterEmail));
    });
  }),
  pagedItems: computed('filteredItems.[]', function() {
    return this.filteredItems.slice(0, 2);
  }),
});

templates.application.hbs

<h1>Welcome to {{appName}}</h1>
<br>
<br>
<table>
	<thead>
    <tr>
      <th>Vorname</th>
      <th>Nachname</th>
      <th>Email</th>
    </tr>
    <tr>
    	<th><input oninput={{action (mut filterFirstName) value="target.value"}}></th>
      <th><input oninput={{action (mut filterLastName) value="target.value"}}></th>
      <th><input oninput={{action (mut filterEmail) value="target.value"}}></th>
    </tr>
  </thead>
  <tbody>
  	{{#each this.pagedItems as |item|}}
      <tr>
        <td>{{item.firstName}}</td>
        <td>{{item.lastName}}</td>
        <td>{{item.email}}</td>
      </tr>
    {{/each}}
  </tbody>
</table>

{{#if (gt this.filteredItems.length this.pagedItems.length)}}
  <p>
    Erste {{this.pagedItems.length}} von {{this.filteredItems.length}} Datensätzen. Für weitere Datensätze bitte Filter genauer machen.
  </p>
{{/if}}

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",
    "ember-truth-helpers": "2.1.0"
  }
}