Raised by ActiveRecord::Base#destroy! when a call to #destroy would return false.

begin
  complex_operation_that_internally_calls_destroy!
rescue ActiveRecord::RecordNotDestroyed => invalid
  puts invalid.record.errors
end
Methods
N
Attributes
[R] record
Class Public methods
new(message = nil, record = nil)

Source: show | on GitHub 

# File activerecord/lib/active_record/errors.rb, line 90
def initialize(message = nil, record = nil)
  @record = record
  super(message)
end