URL encoding and other hackery

[Adam Doppelt]

Igor Sysoev wrote:
>> later. I want to use something like this:
>>
>> if (-f $document_root/$uri)
>>     
>
> You should use $request_filename instead: - it's "$document_root$uri".
> However, $request_filename correctly handle "root" as "alias".
>   
I'm looking for a flavor of $request_filename that includes query 
arguments, so that I can cache a version of the page that includes the 
arguments. At the very least, I need to differentiate between a version 
WITH arguments and a version WITHOUT arguments. I don't want those two 
requests to serve up the same page. This is very important for SEO 
purposes, to avoid duplicate content being shown at two different urls.

I could use this:

if (-f $document_root/$request_uri)

But there are escaping issues. Perhaps nginx needs something like this:

$request_filename_with_args


>> 2) Can I URL encode a variable?
>>     
>
> I do not understand the question.
>   
Another solution to my problem would be something like:

set $path url_escape($request_uri)
if (-f $document_root/$path) {
  ...

Adam
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