method
inverse_which_updates_counter_cache
v4.2.9 -
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Class: ActiveRecord::Associations::HasManyAssociation
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- What's this?
inverse_which_updates_counter_cache(reflection = reflection())
private
This shit is nasty. We need to avoid the following situation:
* An associated record is deleted via record.destroy * Hence the callbacks run, and they find a belongs_to on the record with a :counter_cache options which points back at our owner. So they update the counter cache. * In which case, we must make sure to *not* update the counter cache, or else it will be decremented twice.
Hence this method.