[TYPO3-mvc] Upload file for invalid object

[Simon Schaufelberger (Schaufi)]

Hi,
i have an upload form for an image and want to upload that file even 
when the object is invalid and does not enter my saveAction. How do i do 
that?

In this case i want to improve the usability and don't want to force the 
user to select the just chosen image from his pc again (and maybe again 
and again) but just save the image name in a hidden form field.

of course some cleanup would later be nice for the images of objects 
that didn't make it ;)
-- 
Regards, Schaufi