dongxuxian1123 2014-01-16 07:17
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Symfony2 - 从具有多个参数的控制器参数列表访问Request对象

I am using Symfony 2.4, and according to the Docs, the correct way of retrieving the Request object in the controller is the following:

/**
 * @Route("/register/next", name="next_registration_step")
 */
public function nextAction(Request $request = null) {...}

This works as expected. However, if I add a parameter to the controller, $request becomes null at runtime:

/**
 * @Route("/register/next/{currentStep}", name="next_registration_step")
 */
public function nextAction(Request $request = null, $currentStep = 0) {...}

How do I work around this issue without using any older-but-deprecated methods for getting the request?

Note: if possible, a solution that does not involve the Request Stack recently introduced to Symfony 2.4 would be great, as it seems like overkill.

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  • doufang8282 2014-01-16 07:24
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    This works,

    as I think the only difference is that I do not pass = null in parameters declaration

    use Symfony\Component\HttpFoundation\Request;
    
    /**
     * @Route("/hello/{name}", name="_demo_hello")
     */
    public function helloAction(Request $request, $name)
    {
        var_dump($request, $name);die();
    

    In Symfony2 controllers it's not a good Idea to declare default value in the method definition - it should be done in routing definition.

    In your case:

     /*
     *
     * @Route("/register/next/{currentStep}", name="next_registration_step", defaults={"currentStep" = 0})
     */
    public function next(Request $request, $currentStep) {...}
    

    regards,

    本回答被题主选为最佳回答 , 对您是否有帮助呢?
    评论

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