Ticket [#2070](http://code.djangoproject.com/ticket/2070) allows you to create your own file upload handlers. Here's an example handler that tracks a file's upload so you might display a progress meter after form submission.
The snippet has two parts, the upload handler which tracks progress, and an upload_progress view used to report back to the browser.
The upload handler uses [django's cache framework](http://www.djangoproject.com/documentation/cache/#the-low-level-cache-api) to store the data, which can then be retrieved by the view to send back to the browser.
Note: Your form's http post request must have a query parameter (X-Progress-ID) sent along with it, which should contain a unique key to identify the upload. That key will also be sent with your ajax requests to the upload_progress view to retrieve the progress data.
Setup: place the UploadProgressCachedHandler anywhere you like on the python path, and add to your settings.py:
from django.conf import global_settings
FILE_UPLOAD_HANDLERS = ('path.to.UploadProgressCachedHandler', ) + \
global_settings.FILE_UPLOAD_HANDLERS
Set up the upload_progress view in any of your apps along with a corresponding entry in your urlconf.
Here's some javascript example code to make the ajax requests and display the progress meter: <http://www.djangosnippets.org/snippets/679/>
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