[FLOW3-general] help with image upload

[Winfried Mingst]

Hi,
i'm  porting an existing application to flow 2.0 and image upload is my 
last challenge. Because of compatibility reasons there has to be a 
many-to-many relation between an object "master" and "image". In new app 
a relation 1:n between "master" and "image" is sufficient.
So there has to be a join table between master and image which is 
created by doctrine:update correctly.

Please have a look at my example. I'm not able to upload images. Only 
Master's data are created. My goal is to have a form where i can 
create/update a master and upload several images.

Here you can see my example code:
http://pastebin.com/YihvHj4m

further questions:

Is there a viewhelper for multiple file upload?

Is it possible to store resources in subfolders under 
Web/_Resources/Persistent/ (compatibility reason)?

What about creating thumbnails? Is there a package/method in Flow?

THX

Winfried