php 我如何在 Symfony2 路由中有可选参数

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时间:2020-08-25 02:33:16  来源:igfitidea点击:

How can i have optional parameters in Symfony2 route

phpsymfonyrouting

提问by Mirage

I have this code below :

我在下面有这个代码:

/**
 * Lists all User entities.
 *
 * @Route("/{cid}",defaults={"cid" = null},name="user")
 * @Template()
 */
public function indexAction($cid=null)
{}

Now if I type site/user/1then it works, but if I type site/user/it says:

现在,如果我输入,site/user/1那么它可以工作,但是如果我输入site/user/它,它会说:

No route found

How can I have it that both routes work?

我怎么能知道两条路线都有效?

回答by Inoryy

Try to go to site/user(notice no backslash at the end).

尝试转到site/user(注意末尾没有反斜杠)。

Generally it should work, I have relatively similar configuration working.

一般来说它应该可以工作,我有相对相似的配置工作。

But if all else fails you can always define multiple routes for same action, i.e.

但是,如果所有其他方法都失败了,您始终可以为同一操作定义多个路由,即

/**
 * Lists all User entities.
 *
 * @Route("/", name="user_no_cid")
 * @Route("/{cid}", name="user")
 * @Template()
 */
public function indexAction($cid=null)
{

回答by fkoessler

Use a yml file for your routing configuration, and add a default value for id in your routing parameters like this:

使用 yml 文件进行路由配置,并在路由参数中为 id 添加默认值,如下所示:

user:
  pattern:   /site/user/{id}
  defaults:  { _controller: YourBundle:Default:index, id: 1 }

See documentation here

请参阅此处的文档

回答by crmpicco

You could also do it with a GET parameter, e.g.

你也可以用一个 GET 参数来做,例如

/**
 * @param Request $request
 *
 * @return Response
 */
public function displayDetailAction(Request $request) : Response
{
    if ($courseId = $request->query->get('courseId')) {