ZF3动态导航菜单

Question

我想从ZF3应用程序中的SQL数据创建导航菜单；出于对DRY的兴趣，我想尝试使用通用函数来查询数据。

namespace Blog\Factory;

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

use Blog\Model\ZendDbSqlRepository;

class BlogNavigationFactory extends AbstractNavigationFactory
{

    /**
     * @param ServiceLocatorInterface $serviceLocator
     * @return array
     * @throws \Zend\Navigation\Exception\InvalidArgumentException
     */
    protected function getPages(ServiceLocatorInterface $serviceLocator)
    {
        if (null === $this->pages) {

            $application = $serviceLocator->get('Application');
            $routeMatch  = $application->getMvcEvent()->getRouteMatch();
            $router      = $application->getMvcEvent()->getRouter();

            // get your pages from wherever...
            $postRepository = new ZendDbSqlRepository();
            $pages       = $postRepository->findAllPosts();

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

    public function getName()
    { 
         // this isn't used if fetching from db, it's just here to keep the abstract factory happy
         return 'cms';
    }
}

工厂将被添加到服务管理器，如下所示：

// In module/Blog/config/module.config.php:

return [
    'service_manager' => [
        'aliases' => [ /* ... */ ],
        'factories' => [
            Model\PostRepository::class => InvokableFactory::class,
            Model\ZendDbSqlRepository::class => Factory\ZendDbSqlRepositoryFactory::class,
            Model\PostCommand::class => InvokableFactory::class,
            Model\ZendDbSqlCommand::class => Factory\ZendDbSqlCommandFactory::class,
            'BlogNavigation' => 'Blog\Factory\BlogNavigationFactory',
        ],
    ],
    'controllers'  => [ /* ... */ ],
    'router'       => [ /* ... */ ],
    'view_manager' => [ /* ... */ ],
];

并在导航视图帮助器中使用，如下所示：

<?php echo $this->navigation()->menu('BlogNavigation'); ?>

这不起作用，因为博客教程通过导航工厂需要以某种方式引用的工厂和接口传递数据。

如何编写导航工厂以使用ZendDbSqlRepository中的findAllPosts函数

Answer 1

getPages()方法接收ServiceManager实例(它实现了ServiceLocatorInterface)，您可以像这样使用它来获取存储库

/**
 * @param ServiceLocatorInterface $serviceLocator
 * @return array
 * @throws \Zend\Navigation\Exception\InvalidArgumentException
 */
protected function getPages(ServiceLocatorInterface $serviceLocator)
{
    if (null === $this->pages) {

        $application = $serviceLocator->get('Application');
        $routeMatch  = $application->getMvcEvent()->getRouteMatch();
        $router      = $application->getMvcEvent()->getRouter();

        // get your repository from the service locator
        $postRepository = $serviceLocator->get(\Blog\Model\ZendDbSqlRepository::class);
        // get your pages from repository
        $pages       = $postRepository->findAllPosts();

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