/ Ruby on Rails
/
method

stale_state

rails latest stable - Class: ActiveRecord::Associations::Association
stale_state()
private

This should be implemented to return the values of the relevant key(s) on the owner, so that when stale_state is different from the value stored on the last find_target, the target is stale.

This is only relevant to certain associations, which is why it returns nil by default.