Symfony 4 - KNP Menu - MenuBuilder not being called - php

Question

I am upgrading from Symfony 3.3 to Symfony 4.
KNPMenu was running fine under Symfony 3.3, but now I am seeing this exception:
An exception has been thrown during the rendering of a template ("The
menu "main" is not defined.").
services.yaml
App\Menu\MenuBuilder:
public: true
tags:
- { name: app.menu_builder.admin, method: createAdminMenu, alias: admin }
- { name: app.menu_builder.calendar, method: createCalendarMenu, alias: calendar }
- { name: app.menu_builder.main, method: createMainMenu, alias: main }
- { name: app.menu_builder.trailer, method: createTrailerMenu, alias: trailer }
- { name: app.menu_builder.user, method: createUserMenu, alias: user }
MenuBuilder
Namespace App\Menu;
use Knp\Menu\FactoryInterface;
use Symfony\Component\DependencyInjection\ContainerAwareInterface;
use Symfony\Component\DependencyInjection\ContainerAwareTrait;
use Symfony\Component\Security\Core\Security;
class MenuBuilder implements ContainerAwareInterface
{
use ContainerAwareTrait;
private $factory;
/**
* #param FactoryInterface $factory
*/
public function __construct( FactoryInterface $factory )
{
$this->factory = $factory;
}
I put a die('here'); in the __construct, it is never executed.
Using php bin/console debug:container menu yields:
Information for Service "App\Menu\MenuBuilder"
==============================================
---------------- -------------------------------------------------------------------------
Option Value
---------------- -------------------------------------------------------------------------
Service ID App\Menu\MenuBuilder
Class App\Menu\MenuBuilder
Tags app.menu_builder.admin (method: createAdminMenu, alias: admin)
app.menu_builder.calendar (method: createCalendarMenu, alias: calendar)
app.menu_builder.main (method: createMainMenu, alias: main)
app.menu_builder.trailer (method: createTrailerMenu, alias: trailer)
app.menu_builder.user (method: createUserMenu, alias: user)
Public yes
Synthetic no
Lazy no
Shared yes
Abstract no
Autowired yes
Autoconfigured yes
---------------- -------------------------------------------------------------------------
How can I get MenuBuilder __construct to execute?

Answer 1

Thank you all for your time.
This gist was helpful: https://gist.github.com/lsv/4d8044d21819f28f0dde52a3fb8211a0
This answer was helpful: How to avoid "knp_menu.factory" deprecation?
services.yaml
app.menu_builder:
class: App\Menu\MenuBuilder
app.menu.main:
class: Knp\Menu\MenuItem
factory: ['#app.menu_builder', 'createMainMenu']
arguments: { $options: [] }
tags:
- { name: knp_menu.menu, alias: main }
I used php bin/console debug:autowiring security to get the security authorization checker
Then I updated MenuBuilder.php like so:
Namespace App\Menu;
use Knp\Menu\FactoryInterface;
use Symfony\Component\Security\Core\Authorization\AuthorizationCheckerInterface;
class MenuBuilder
{
private $factory;
private $security;
/**
* #param FactoryInterface $factory
*/
public function __construct( FactoryInterface $factory, AuthorizationCheckerInterface $security )
{
$this->factory = $factory;
$this->security = $security;
}
Adding the SecurityAuthorizationChecker allows me to control the menu items offered with this statement:
if( $this->security->isGranted( 'IS_AUTHENTICATED_FULLY' ) )