Andrey,
One way would be to simply test for it on your form action page.
<dtml-if "image_1 == ''">
<p>Sorry! You need to include an image.</p>
<dtml-else>
<dtml-call "manage_addImage( id=imageId, file=REQUEST[ image_1],
REQUEST=REQUEST )">
</dtml-if>
Jamey
> -----Original Message-----
> From: Andrei Belitski [SMTP:[EMAIL PROTECTED]]
> Sent: Wednesday, January 17, 2001 9:16 AM
> To: [EMAIL PROTECTED]
> Subject: [Zope] verify whether html <input type=file... is empty
>
> Hi!
> Don't know if it is really a zope question, but I have a problem,
> verifying if e.g. input
> <INPUT TYPE="file" NAME="image_1" SIZE="50">
> is empty or not using
> <dtml-unless " REQUEST[ 'image_1']=='' ">
> <dtml-call "manage_addImage( id=imageId, file=REQUEST[ image_1],
> REQUEST=REQUEST )">
> </dtml-unless>
> well, I think the <input type=file... is not a string, but what I want
> to test is if the user put in the filename and not whether the really
> existing file is empty, so how could aI do it?
>
> I would appreciate any hints
> Thank you in advance
> Andrey
>
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