[Pimcore] Custom Twig Navigation Builder

navigation.html.twig

{% set navigation = app_build_nav(document, navStartNode) %}
{% set menuRenderer = pimcore_nav_renderer('menu') %}

<ul>
    {% for page in navigation %}
        {% if (page.isVisible and menuRenderer.accept(page)) %}

            <li class="{{ page.isActive(true) ? 'active' }}">
                <a href="{{ page.href }}">{{ page.label }}</a>
                
                {% if page.hasPages %}
                    <ul>
                        {% for child in page.pages %}
                            {% if (child.isVisible and menuRenderer.accept(child)) %}
                                <li class="{{ child.isActive(true) ? 'active' }}">
                                    <a href="{{ child.href }}">{{ child.label }}</a>
                                </li>
                            {% endif %}
                        {% endfor %}
                    </ul>
                {% endif %}
            </li>

        {% endif %}
    {% endfor %}
</ul>

NavigationExtension.php

<?php

declare(strict_types=1);

namespace AppBundle\Twig\Extension;

use Pimcore\Model\DataObject;
use Pimcore\Model\Document;
use Pimcore\Navigation\Container;
use Pimcore\Templating\Helper\Navigation;
use Symfony\Component\Routing\Router;

class NavigationExtension extends \Twig_Extension
{
    /**
     * @var Navigation
     */
    private $navigationHelper;

    /**
     * @var RouterInterface
     */
    private $router;

    /**
     * @param Navigation $navigationHelper
     * @param RouterInterface $router
     */
    public function __construct(Navigation $navigationHelper, RouterInterface $router)
    {
        $this->navigationHelper = $navigationHelper;
        $this->router = $router;
    }

    /**
     * {@inheritdoc}
     */
    public function getFunctions(): array
    {
        return [
            new \Twig_Function('app_build_nav', [$this, 'buildNavigation']),
        ];
    }

    /**
     * @param Document $activeDocument
     * @param Document|null $navigationRootDocument
     * @param string|null $htmlMenuPrefix
     * @param bool|string $cache
     * @return Container
     */
    public function buildNavigation(
        Document $activeDocument,
        Document $navigationRootDocument = null,
        string $htmlMenuPrefix = null,
        $cache = true
    ): Container {
        return $this->navigationHelper->buildNavigation(
            $activeDocument,
            $navigationRootDocument,
            $htmlMenuPrefix,
            function($page, $document) {
                /** @var $document \Pimcore\Model\Document */
                /** @var $page \Pimcore\Navigation\Page\Document */
                if ($document->getProperty('templateType') === 'news') {
                    $list = new DataObject\News\Listing();
                    $list->load();

                    foreach ($list as $news) {
                        $detailLink = $this->router->generate('news', [
                            'id' => $news->getId(),
                            'text' => $news->getTitle(),
                            'prefix' => $activeDocument->getFullPath(),
                        ]);

                        $uri = new \Pimcore\Navigation\Page\Document([
                            'label' => $news->getTitle(),
                            'id' => sprintf('object-%s', $object->getId()),
                            'uri' => $detailLink
                        ]);

                        $page->addPage($uri);
                    }
                }
            },
            $cache
        );
    }
}

services.yml

services:
    AppBundle\Twig\Extension\NavigationExtension:
        arguments:
            - '@pimcore.templating.view_helper.navigation'
            - '@router'
        tags:
            - { name: twig.extension }