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SitePreviewer

Learn how to build custom site previewer plugins.


SitePreviewer plugins are responsible for rendering the preview for an entity type.

Implement a @SitePreviewer plugin to provide your own custom previewer.

Example

A plugin that renders a link to preview.

<?php
namespace Drupal\next\Plugin\Next\SitePreviewer;
use Drupal\Core\Entity\EntityInterface;
use Drupal\next\Plugin\SitePreviewerBase;
/**
* Provides a link to the preview page.
*
* @SitePreviewer(
* id = "link",
* label = "Link to preview",
* description = "Displays a link to the preview page."
* )
*/
class Link extends SitePreviewerBase {
/**
* {@inheritdoc}
*/
public function render(EntityInterface $entity, array $sites) {
$build = [];
foreach ($sites as $site) {
$build[] = [
'#type' => 'link',
'#title' => $this->t('Open preview'),
'#url' => $site->getPreviewUrlForEntity($entity),
];
}
return $build;
}
}

Configuration

SitePreviewer plugins can provide their own configuration. See \Drupal\next\Plugin\ConfigurableSitePreviewerInterface.

Route SyncingSiteResolver

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