I've 2 models with a belongs_to / has_many relationship - e.g. Users has_many Orders. The problem I have seems related to activerecord caching (which I'm not 100% clear on).
ex1 : user = User.create user.orders.each ... # => (no orders, as expected) user.orders.create user.orders.each ... # => (still no orders this time)
Changing the 2nd loop to "user.orders(true).each" fixed it, so I guess it's related to caching.
ex2 : user = User.create user.orders.count # => 0 user.orders.create user.orders.count # => 1
Strangely, this works, which seems inconsistent with the earlier result.
Is this expected behaviour, or a bug ? Should the cache be invalidated on order create ? What's the recommended way to fix this ? Just remember to use (true) sometimes, or can I fix it in the models, so the app code doesn't need to worry about it. E.g. is it possible to invalidate the user and order caches when a new associated order is created ?
