On Mon, 10 Jun 2019 at 20:21, sergio ruiz <sergio.rrd@gmail.com> wrote:
I am currently putting together a Seaside website for my radio show. I am trying to figure out how to model the "has and belongs to many" relationships.��

Each episode can have many tracks, each of these tracks can belong to several episodes.
I want to be able to present a listing of which episodes each track appears in, and a listing of tracks for each episode.

The approach I have seen on this is to create an intermediary object and store a set of ids on this, but this seems a little clunky, and it seems like there would be a clean way to do this.

This is how you'd model many-to-many relationships in relational databases.��
https://dzone.com/articles/how-to-handle-a-many-to-many-relationship-in-datab��
If that is where your data is stored, you may be forced to this.

If you are keeping your design purely in the object-oriented domain,��
you might try Mutual Friends...��https://pdfs.semanticscholar.org/348f/e4ecff3c23f3709bb88e7e60379905a3b930.pdf
although I've not enough experience with it to know if its the best way.

Or you might try relation slots.�� ��Check out SlotExampleMovieAndPersonTest.
Some background reading...����https://rmod.inria.fr/archives/papers/Verw11a-OOSPLA11-FlexibleObjectLayouts.pdf��
which I'd guess is still useful even if I read somewhere it was a bit out of date.

cheers -ben����