How to upload image files to different directories dynamically in CKEDITOR which has a Django backend?

Question

I am using Filemanager of FCKEditor in my ckeditor to upload and manage image uploads. However in the configuration file(config.py), the upload_to directory path is hardcoded.

UserFilesPath = '/userfiles/'

and full path for image files is hardcoded as -

FileTypesPath['Image'] = UserFilesPath + 'image/'

But I want to upload image files to different directories.I will explain -

Every web page of mine has different Ckeditors with unique Ids.Each such CKEDITOR represents a document.I want to upload image of a particular ckeditor to a particular document path.For ex -

FilesTypesPath['Image'] = UserFilesPath + 'image/' + 'unique_doc_id/'

The unique doc Id will vary for every document.Is there any way around to achieve this? Thanks.