Pattern for unidirectional has_many join?
- by Kris
It occurred to me that if I have a has_many join, where the foreign model does not have a belongs_to, and so the join is one way, then I don't actually need a foreign key.
We could have a column, category_ids, which stores a marshaled Array of IDs which we can pass to find.
So here is an untested example:
class page < AR
def categories
…
