Php 将参数传递到导航工厂

我想从数据库记录中创建Categories菜单，但用当前类别及其子类别限制菜单项（如在Walmart.com上）。问题是如何在导航工厂中访问当前类别，我在那里为菜单创建页面

导航工厂：

use Zend\ServiceManager\ServiceLocatorInterface;
use Zend\Navigation\Service\DefaultNavigationFactory;

class CategoriesMenu extends DefaultNavigationFactory
{
    protected function getPages(ServiceLocatorInterface $serviceLocator)
    {
    if (null === $this->pages) {
        $em = $serviceLocator->get('Doctrine\ORM\EntityManager');

        // here I need to know the current category

        $categories = $em->getRepository('Application\Entity\Category')->getRootCategories();

        $nav = array();
        foreach ($categories as $category) {
        $page = array(
           'label' => $category->getName(),
           'route' => 'category',
           'params' => array(
               'category_path' => $category->getUrlName(),
            ),
           'pages' => array(),
           );
           $nav[] = $page;
        }
        $configuration['navigation'][$this->getName()] = $nav;

        $application = $serviceLocator->get('Application');
        $routeMatch  = $application->getMvcEvent()->getRouteMatch();
        $router      = $application->getMvcEvent()->getRouter();
        $pages       = $this->getPagesFromConfig($configuration['navigation'][$this->getName()]);

        $this->pages = $this->injectComponents($pages, $routeMatch, $router);
    }
    return $this->pages;
    }
}

use Zend\ServiceManager\ServiceLocatorInterface;
use Zend\Navigation\Service\DefaultNavigationFactory;

class CategoriesMenuFactory extends DefaultNavigationFactory
{
    protected function getName()
    {
    return 'categoriesmenu';
    }

    public function createService(ServiceLocatorInterface $serviceLocator)
    {
    $navigation = new CategoriesMenu();
    return $navigation->createService($serviceLocator);
    }
}

类别菜单工厂：

use Zend\ServiceManager\ServiceLocatorInterface;
use Zend\Navigation\Service\DefaultNavigationFactory;

class CategoriesMenu extends DefaultNavigationFactory
{
    protected function getPages(ServiceLocatorInterface $serviceLocator)
    {
    if (null === $this->pages) {
        $em = $serviceLocator->get('Doctrine\ORM\EntityManager');

        // here I need to know the current category

        $categories = $em->getRepository('Application\Entity\Category')->getRootCategories();

        $nav = array();
        foreach ($categories as $category) {
        $page = array(
           'label' => $category->getName(),
           'route' => 'category',
           'params' => array(
               'category_path' => $category->getUrlName(),
            ),
           'pages' => array(),
           );
           $nav[] = $page;
        }
        $configuration['navigation'][$this->getName()] = $nav;

        $application = $serviceLocator->get('Application');
        $routeMatch  = $application->getMvcEvent()->getRouteMatch();
        $router      = $application->getMvcEvent()->getRouter();
        $pages       = $this->getPagesFromConfig($configuration['navigation'][$this->getName()]);

        $this->pages = $this->injectComponents($pages, $routeMatch, $router);
    }
    return $this->pages;
    }
}

use Zend\ServiceManager\ServiceLocatorInterface;
use Zend\Navigation\Service\DefaultNavigationFactory;

class CategoriesMenuFactory extends DefaultNavigationFactory
{
    protected function getName()
    {
    return 'categoriesmenu';
    }

    public function createService(ServiceLocatorInterface $serviceLocator)
    {
    $navigation = new CategoriesMenu();
    return $navigation->createService($serviceLocator);
    }
}

module.config.php

'service_manager' => array(
    'factories' => array(
        'categoriesmenu' => 'Application\Navigation\Service\CategoriesMenuFactory',
    ),
),

---

如果“当前类别”是管线参数，则它将位于管线匹配对象内。您应该能够通过

$routeMatch->getParam（'category'）

访问它。如果是GET或POST，您可以从请求实例获取它。谢谢，我找到了从route获取此参数的方法，但理想情况下，我希望将其从控制器传递到导航，因为现在我必须在控制器和导航工厂中加载两次category对象。