ModulePermissionsLinkHelper.php

<?php

declare (strict_types=1);
namespace Drupal\user;

use Drupal\Core\Access\AccessManagerInterface;
use Drupal\Core\Extension\ModuleExtensionList;
use Drupal\Core\StringTranslation\StringTranslationTrait;
use Drupal\Core\Url;

/**
 * Provides a helper for generating module permissions links.
 */
class ModulePermissionsLinkHelper {
    use StringTranslationTrait;
    
    /**
     * Constructs a new service instance.
     *
     * @param \Drupal\user\PermissionHandlerInterface $permissionHandler
     *   The user permissions handler service.
     * @param \Drupal\Core\Access\AccessManagerInterface $accessManager
     *   The access manager service.
     * @param \Drupal\Core\Extension\ModuleExtensionList $moduleExtensionList
     *   The module handler service.
     */
    public function __construct(PermissionHandlerInterface $permissionHandler, AccessManagerInterface $accessManager, ModuleExtensionList $moduleExtensionList) {
    }
    
    /**
     * Generates a link pointing to a given module's permissions page section.
     *
     * @param string $module
     *   The module name.
     * @param string $name
     *   The module display name.
     *
     * @return array|null
     *   A module permissions link as a render array or NULL if the module doesn't
     *   expose any permission or the current user cannot access it.
     */
    public function getModulePermissionsLink(string $module, string $name) : ?array {
        if ($this->permissionHandler
            ->moduleProvidesPermissions($module)) {
            if ($this->accessManager
                ->checkNamedRoute('user.admin_permissions.module', [
                'modules' => $module,
            ])) {
                $url = new Url('user.admin_permissions.module', [
                    'modules' => $module,
                ]);
                return [
                    'title' => t('Configure @module permissions', [
                        '@module' => $name,
                    ]),
                    'description' => '',
                    'url' => $url,
                ];
            }
        }
        return NULL;
    }

}