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.

Methods
M
N
Attributes
[R] record
[R] attempted_action
Class Public methods
new(record, attempted_action)

Source: show | on GitHub 

     # File activerecord/lib/active_record/errors.rb, line 104
104:     def initialize(record, attempted_action)
105:       @record = record
106:       @attempted_action = attempted_action
107:     end
Instance Public methods
message()

Source: show | on GitHub 

     # File activerecord/lib/active_record/errors.rb, line 109
109:     def message
110:       "Attempted to #{attempted_action} a stale object: #{record.class.name}"
111:     end