From: Carlos <angus@...>
Date: 2005-01-07T01:06:47+09:00
Subject: Re: Image decompression, eruby

[Belorion <belorion@gmail.com>, 2005-01-06 16.37 CET]
[...]
> Specifically, my HTML for uploading looks like:
> 
> <form name='fileupload' enctype="multipart/form-data"
> action='attach.rhtml' method='post'>
> <input type=hidden name=index value=<%= index %>>
> <input type='file' name="myfile" size="35">
> <input type='submit' value="Upload">
> 
> And my upload specific ruby in attach.rhtml looks like:
> 
> fromfile = cgi.params['myfile'].first
> fromfile.binmode  # Tried both with and without this line
> dbh.do( "INSERT INTO attachments VALUES( ? )", [ index,
> fromfile.original_filename, fromfile.read] )
> 
> So, somewhere in that process the data gets corrupted, and the image
> comes out half garbled.  Any ideas?  Plain text files, which are
> handled using the exact same script, come out just fine.

I don't have any idea about dbi or mysql...

Attacking the problem by the web side :), maybe the upload got interrupted
and you are getting a truncated file.

If you add a parameter like

	<input type=hidden name=MARK value=MARK>

at the end of your form, you can check it to know if all the previous fields
arrived whole. At least, if that's not the problem, you'll have a variable
less to ponder (and it is a good general tip, too :).