title: django custom file storage path
body: <p>i would like to dynamically set the file storage path from the view regardless of the actual media_root path. is this possible. i have looked into custom storage objects and i am aware of the custom upload_to method call. currently i have a method that is called when my ImageField model upload_to is specified. this lets me change the directory within media_root. i have tried to do something similar with an overriden FileSystemStorage class but whatever it is set to i think it is bound before i can modify it within a view. if fileupload handler is the way to go i would be curious as to how to implement one.</p>