3. Create child admins
Let us say you have a PlaylistAdmin
and a VideoAdmin
. You can
optionally declare the VideoAdmin
to be a child of the PlaylistAdmin
.
This will create new routes like, for example, /playlist/{id}/video/list
,
where the videos will automatically be filtered by post.
To do this, you first need to call the addChild
method in your PlaylistAdmin
service configuration with two arguments, the child admin name (in this case
VideoAdmin
service) and the Entity field that relates our child Entity with
its parent:
# config/services.yaml
App\Admin\VideoAdmin:
# tags, calls, etc
App\Admin\PlaylistAdmin:
calls:
- [addChild, ['@App\Admin\VideoAdmin', 'playlist']]
# Or `[addChild, ['@App\Admin\VideoAdmin']]` if there is no
# field to access the Playlist from the Video entity
To display the VideoAdmin
extend the menu in your PlaylistAdmin
class:
namespace App\Admin;
use Knp\Menu\ItemInterface as MenuItemInterface;
use Sonata\AdminBundle\Admin\AbstractAdmin;
use Sonata\AdminBundle\Admin\AdminInterface;
final class PlaylistAdmin extends AbstractAdmin
{
protected function configureTabMenu(MenuItemInterface $menu, string $action, ?AdminInterface $childAdmin = null): void
{
if (!$childAdmin && !in_array($action, ['edit', 'show'])) {
return;
}
$admin = $this->isChild() ? $this->getParent() : $this;
$id = $admin->getRequest()->get('id');
$menu->addChild('View Playlist', $admin->generateMenuUrl('show', ['id' => $id]));
if ($this->isGranted('EDIT')) {
$menu->addChild('Edit Playlist', $admin->generateMenuUrl('edit', ['id' => $id]));
}
if ($this->isGranted('LIST')) {
$menu->addChild('Manage Videos', $admin->generateMenuUrl('App\Admin\VideoAdmin.list', ['id' => $id]));
}
}
}
It also possible to set a dot-separated value, like post.author
,
if your parent and child admins are not directly related.
Be wary that being a child admin is optional, which means that regular
routes will be created regardless of whether you actually need them
or not. To get rid of them, you may override the configureRoutes
method:
namespace App\Admin;
use Sonata\AdminBundle\Admin\AbstractAdmin;
use Sonata\AdminBundle\Route\RouteCollectionInterface;
final class VideoAdmin extends AbstractAdmin
{
protected function configureRoutes(RouteCollectionInterface $collection): void
{
if ($this->isChild()) {
return;
}
// This is the route configuration as a parent
$collection->clear();
}
}
You can nest admins as deep as you wish.
Let’s say you want to add comments to videos.
You can then add your CommentAdmin
admin service as a child of
the VideoAdmin
admin service.
Finally, the admin interface will look like this: