Add associated object generator

[kaspth]

Run with:
bin/rails g associated Organization::Seats

[kaspth]

@garrettdimon thanks for the generator code! I think this is really interesting. I've taken the liberty of tweaking certain names/style to be closer to my mental model.

I've cut the integrating "works with associated object" test since I don't quite understand the need for it — imo that would usually be tested through other behavior in the record itself.

[garrettdimon]

@garrettdimon thanks for the generator code! I think this is really interesting. I've taken the liberty of tweaking certain names/style to be closer to my mental model.

Looks good and much more refined than my first draft. :)

I've cut the integrating "works with associated object" test since I don't quite understand the need for it — imo that would usually be tested through other behavior in the record itself.

Yeah. That was a more whimsical addition that I started on but never quite felt like it was needed and thus never actually took it any further. Definitely agree with cutting it.

[natematykiewicz]

This is cool!