Symfony2:获取当前目录错误


Symfony2 : get current directory error

当我尝试获取当前目录时:

$this->container->getParameter('kernel.root_dir').'/../web/

我有这个错误:Fatal error: Using $this when not in object context in C:'XXX on line 124

法典:

class AdminController {
/**
 * Add event controller.
 *
 * @param Request $request Incoming request
 * @param Application $app Silex application
 */
public function addEventAction(Request $request, Application $app) {
    $event = new Event();
    $types= $app['dao.type']->findAllSelectList();
    $eventForm = $app['form.factory']->create(new EventType($types), $event);
    $eventForm->handleRequest($request);
    if ($eventForm->isSubmitted() && $eventForm->isValid()) {
        var_dump($event->getCoverImageLink());
        $file = $event->getCoverImageLink();
        $fileName = md5(uniqid()).'.'.$file->guessExtension();
        var_dump($fileName);
        //$path = $this->container->getParameter('kernel.root_dir').'/../web';//$this->get('kernel')->getRootDir() . '/../web';
        var_dump($this);
        $app['dao.event']->save($event);
        $app['session']->getFlashBag()->add('success', 'The event was successfully created.');
    }
    return $app['twig']->render('event_form.html.twig', array(
        'title' => 'New event',
        'eventForm' => $eventForm->createView()));
}

请问如何解决此错误?使用什么正确的功能?

看来您使用的是Silex,而不是Symfony 2。作为一个非常简约的框架,silex并没有给你Symfony所做的所有配置和依赖注入的好处。

能够检索应用程序根目录的最简单方法是在 bootstrap.php 中自行定义它。只需在顶部添加这样的东西:

define('APP_ROOT', __DIR__ . '/../');

现在,您只需在控制器中使用常量:

public function addEventAction(Request $request, Application $app) {
    ...
    $path = APP_ROOT . '/../web';
    ...
}