在@ Route的条件选项中使用请求

Question

I have a controller that renders a fragment of a page; and it may be refreshed using ajax. Until now, this controller uses this at the top:

    if ('/_fragment' !== $request->getPathInfo() && !$request->isXmlHttpRequest()) {
        throw $this->createNotFoundException();
    }

This works well, but I seen that there is a condition option in the @Route annotation, and wanted to use it instead:

/**
 * @Route(
 *     "/widget/render/{cryptedId}",
 *     name = "widget_render",
 *     requirements = {
 *         "cryptedId" = "^[a-zA-Z0-9]+$"
 *     },
 *     condition = "'/_fragment' == request.getPathInfo() or  request.isXmlHttpRequest()"
 * )
 * @Method({"GET"})
 * @Template()
 */

But adding this option gives me the following error:

FatalErrorException in appDevUrlMatcher.php line 319:
-> Error: Call to a member function getPathInfo() on a non-object

That's strange, because from the documentation, context and request are available in the expression parser. By looking at the source code, in UrlMatcher.php, we can see that they should be available:

    if ($route->getCondition() && !$this->getExpressionLanguage()->evaluate($route->getCondition(), array('context' => $this->context, 'request' => $this->request))) {
        return array(self::REQUIREMENT_MISMATCH, null);
    }

I really don't get the point. Any clue?

Answer 1

I tried your condition in my Symfony3.0 app and it works perfectly, so I think the problem is somwhere else than in your condition definition.