[mod_python] TransHandler help?

Rob,

Bingo! That hit the nail square on the head, and drove it right home!

Excellent!

I obviously didn't read the documentation thoroughly enough. It states in section 5.1.3 about
PythonTransHandler:

"This routine gives allows for an opportunity to translate the URI into an actual *filename*" [my
emphasis].

That's filename, NOT uri. I mixed it up, and tried to modify the request URI, which is a
read-only attribute. Hence why I couldn't get it to work :*)

Many thanks for clearing this up. This means that I can forge ahead and rewrite URLs to contain
session IDs, without having to resort to "?sess=xyz" style query parameters.

Thanks again.

Alan.

Robert Sherwood wrote:

> Hi,
>
> Transhandler translates a request from a URL to a filename. Though you
> can rewrite a URL, I found it was easier simply to use the URL that I
> had, particularly since, In my case, I could count on the argument order
> and such.
>
> This is an extremely simple example, but I wanted to set the file
> request to main.py, which handled all the URL processing itself. The
> important thing to remember is that the TransHandler figures out which
> file you're requesting based on the URL you pass in. It can obviously do
> any processing you need, but that is it's primary function.
>
> from mod_python import apache
> import string
>
> def transhandler(req):
>     #We want to use main.py
>     req.filename = "main.py"
>     return apache.OK
>
> Again, I didn't use mod_python to process the URL, that is done by the
> main Python Handler, as below (adapted slightly for your situation):
>
> def handler(req):
>     #remove trailing slash, if present
>     URI = req.uri
>     if URI[len(URI)-1] == '/':
>         URI = URI[:len(URI)-1]
>
>     #disassemble the URI for processing
>     components = string.split(URI,'/')[1:]
>
>     sessionID = components[0]
>
>     command = components[1]
>
>     what = components[2]
>
>     # Do stuff here
>
> There's no error checking or anything, but I found it was easier to use
> the request as it came in, rather than rewriting it and processing that.
> However, I had to use the TransHandler to set the request filename to
> the script that did the processing.
>
> Hope this helps.
>
> Rob