Class | ActiveRecord::StaleObjectError
In: | lib/active_record/base.rb
Parent: | ActiveRecordError

Raised on attempt to save stale record. Record is stale when it‘s being saved in another query after instantiation, for example, when two users edit the same wiki page and one starts editing and saves the page before the other.

Read more about optimistic locking in +ActiveRecord::Locking+ module RDoc.

[Validate]