如何链接到Silex中的PDF文件？(How do I link to a PDF file in Silex?)

 我看了一下，似乎无法弄清楚如何在使用Silex时链接到静态文件。 我已经看到了一些关于Symfony的类似问题/答案，但它们涉及YML路由文件，我不与Silex一起使用。 
 
 我的情况 
 
 我在/ docs文件夹中有一些文件。 登录用户可以上传新的pdf文件（因此，我不知道所有文件名将会是什么;它们会不断变化）。 
 
 我的意图 
 
 我需要能够链接到这些PDF文件，以便点击链接某处将打开www.myurl.com/docs/myfile.pdf。 
 
 问题 
 
 由于silex中的路由系统，它将url视为路由（显然）并抛出Page Not Found错误。 
 
 提前感谢您的任何反馈！ 

I've looked around a bit and can't seem to figure out how to link to a static file while using Silex. I've seen some similar questions/answers in regards to Symfony, but they involved YML routing files, which I don't use with Silex.
 
My Situation
 
I have some files in a /docs folder. Logged in users can upload new pdf files (so, I don't know ahead of time what all of the filenames will be; they're constantly changing).
 
My Intent
 
I need to be able to link to these PDF files, so that a click on a link somewhere will open www.myurl.com/docs/myfile.pdf.
 
The Problem
 
Due to the routing system in silex, it treats the url as a route (obviously) and throws a Page Not Found error.
 
Thanks in advance for any feedback!

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