# Many-to-many-to-many examples / tutorials / best practice **URL:** \ **Category:** Rails\ **Created:** [March 2, 2007, 5:38pm UTC](https://www.ruby-forum.com/t/many-to-many-to-many-examples-tutorials-best-practice/87442 "2007-03-02T17:38:50Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![macarthy](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/71c47a/32.png) [@macarthy](https://www.ruby-forum.com/u/macarthy)\ **Post date:** [March 2, 2007, 5:38pm UTC](https://www.ruby-forum.com/t/many-to-many-to-many-examples-tutorials-best-practice/87442/1 "2007-03-02T17:38:50Z")
Has anyone got or seen a “many to many to many” example/ tutorial anywhere ? E.g. a model to handle , teacher , room , period So teacherA is in room 1 at 11-12 oclock or teacherA and B is in room 2 at 12 - 1 oclock I want to know what the best way to model this is ? And how to display things like Room 1 - 11 -12 Teacher A - 12 - 1 Teacher & teacher B ROom 2 etc… or Teacher A 11-12 Room1 12 -1 room 2 etc… Thanks ---
**Author:** ![macarthy](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/71c47a/32.png) [@macarthy](https://www.ruby-forum.com/u/macarthy)\ **Post date:** [March 5, 2007, 10:30am UTC](https://www.ruby-forum.com/t/many-to-many-to-many-examples-tutorials-best-practice/87442/2 "2007-03-05T10:30:59Z")
On 2 Mar 2007, at 16:38, macarthy wrote: > Has anyone got or seen a “many to many to many” example/ tutorial > anywhere ? Have a look at Josh S.'s Many to Many Dance-Off. It’s not quite what you are after but it might help you out: [http://blog.hasmanythrough.com/2006/4/20/many-to-many-dance-off](http://blog.hasmanythrough.com/2006/4/20/many-to-many-dance-off) Also see his other articles on this kind of thing: [http://blog.hasmanythrough.com/associations](http://blog.hasmanythrough.com/associations) Regards, Andy S.