[html-formfu] file upload, constraint and resubmit

[Josef Chladek]

hi,

I've file-uploads in my form, of which one is with constraint  
required. if I upload the file, everything is ok, but if another  
constraint in the form is failing and I have to resubmit, the form  
again wants the file upload. I store the upload in a tmp-table (and a  
helper-var in the session) in my db and therefore I know that I have  
the upload allready. so I want to remove the constraint for the file  
upon resubmit. working with get_all_elements({type => 'File'} and  
remove_element seems not to work. is there a way to explicitly remove  
one constraint?

or does someone has a better way of working with file-uploads and  
resubmits? the logic with tmp-table and session is rather complicated  
and not really generalizable...

thanks for your input
josef