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jadacyrus
jadacyrus at gmail.com
Wed Aug 2 20:51:37 EDT 2006
Graham Dumpleton wrote: > Colin Bean wrote .. > >> Unfortunately, what you're trying to do is more complicated than this. >> First of all, by the time your handler is called, the file has >> already been sent over the network, and your handler is only reading >> it from a tempfile on disk. Also, a handler only sends one response >> back after running to completion, so your code is behaving as >> expected. It finishes processing the file upload (including doing >> everything in your loop), and when it's finished it sends a response >> back to the client. >> >> Sorry I can't provide more constructive feedback having never actually >> implemented something like this. To take a guess at it, you'd need to >> use an InputFilter to examine the upload request as it is read (I >> believe this phase happens before the tempfile is written to disk), >> and this would need to somehow communicate with another mod_python >> handler which would return the current upload progress. The client >> page wold have to keep polling this handler (with an XMLHttpRequest, >> perhaps) and display the results it gets with each poll. Yeah, it's >> pretty ugly... >> > > Except that a subsequent request to try and monitor progress may in a multi > process version of Apache end up at a different process and will not have > access to where the original request is up to. > > In short, there are many reasons why a progress meter is hard to implement and > may not even give a correct indication of what is happening anyway. > > Personally, I am not sure what the fascination is with them besides the eye > candy value of it. > > Graham > > >> HTH, >> Colin >> >> >> On 8/1/06, jadacyrus <jadacyrus at gmail.com> wrote: >> >>> Essentially this is what I have setup for my upload script: >>> >>> [code] >>> >>> #HTML Stuff here >>> #Declare variables etc... >>> >>> while bytes_left >= 0: >>> fileData = req.form['filename'].file.read(1024) >>> filebuffer = filebuffer + fileData >>> bytes_left = bytes_left - 1024 >>> bytes_read = bytes_read + 1024 >>> percent = bytes_read/int(length) * 100 >>> >>> #Some nested IF statements to display a progress indicator using images >>> based on the percent variable. >>> >>> [/code] >>> >>> This is contained in my upload.py in the function upFile which is called >>> from the POST method. However, It seems that the file uploads completely >>> first and then it will show the progress indications afterwards. However >>> this doesn't seem to be logically what my code should be doing. I'm >>> somewhat new to mod_python but not python in general, any suggestions? >>> _______________________________________________ >>> Mod_python mailing list >>> Mod_python at modpython.org >>> http://mailman.modpython.org/mailman/listinfo/mod_python >>> >>> >> _______________________________________________ >> Mod_python mailing list >> Mod_python at modpython.org >> http://mailman.modpython.org/mailman/listinfo/mod_python >> > > Hmm, well it was more of a thing just to let people who are using my site know that the file is actually being uploaded. I guess it really isnt that necessary however. Thanks for all the responses and information.
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