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class ActiveRecord::StaleObjectError

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 documentation.

Inherits From


[R] attempted_action
[R] record

Public class methods

Source code GitHub
# File activerecord/lib/active_record/errors.rb, line 347
def initialize(record = nil, attempted_action = nil)
  if record && attempted_action
    @record = record
    @attempted_action = attempted_action
    super("Attempted to #{attempted_action} a stale object: #{}.")
    super("Stale object error.")

Definition files