Hi, nested formsets looked too complicated. I solved this problem with custom form objects, which were not as complicated as I thought (couple of boilerplate code for request parameters binding but OK).
To your question about ManyToMany fields: I am Django newbie, so I thought using this relationship I can easily access “master-detail” values. Now I know, Django provides “something_set” collection on master object for details objects in OneToMany relationship, what was exactly what I was looking for.
Now, I finished this simple project and I can say, Django is really very interesting and powerful framework for rapid web app development.