my tests seem to imply that << forces an insert of the parent and child records in a has_many relationship when both are newly created objects.
for example,
Controller code:
xy=XY.new pc=PC.new xy.addPC(pc)
Model code:
Class XY < ActiveRecord.... def addPC(pc) self.controls<<pc end end
where XY has a "has_many" association with PC and PC has a "belongs_to" XY
I note that two INSERTs are performed into the tables behind PC and XY models as a result of the call to addPC() but I'm not issuing a .save anywhere in my code.
Is this normal behaviour?