[Zope] How to Update files that are already uploaded

[Mike Jakowlew]

Hi all,

I'm trying to update a file thats already been uploaded. I can't figure out
what command to use, "update_data"/"manage_upload"/"manage_edit". I've
settled (so far) on manage_upload but it doesn't work. I get the error:

Error Type: AttributeError
Error Value:  manage_upload

my code:
_________________________________________
# Takes the filename from a form searches my ZSQL method for the existence
of the file, and then should update the file.

REQUEST=context.REQUEST
filename = REQUEST.form.get('file')
filename=filename.split('\\')[-1]

result=container.Show_filename_selected(filename=filename)
if result:
    fname= container.Show_filename_selected
(filename=filename).tuples()[0][3]
    context.manage_upload([filename,REQUEST])
    return "File Exists... UPDATE: " + filename
else:
    return "File Does NOT Exist: " + filename
_________________________________________

What am I doing wrong? Am I using the wrong command?

Thanks in advance,
mjakowlew
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