[Zope] Checking files to upload

[Juan Manuel Ruiz Garcia]

Hi,

I want to check selected files for upload before.  My script is this one:

-------------------
id=context.REQUEST.form['id']
descr=context.REQUEST.form['desc']
fileToUpload=context.REQUEST.form['file']
context.manage_addFile(id,fileToUpload,descr)
-------------------

The point is that, if I enter a non-existing file in the "file" input field
in the form that calls this script, this code creates a zero-bytes files,
instead of warning me... how can I change this code to detect "file not
found error"?

Working with Zope 2.3 (Python 1.5)

Thanks,



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