See ActiveRecord::Transactions::ClassMethods for documentation.

Methods
Classes and Modules
Module ActiveRecord::Transactions::ClassMethods
Public Class methods
included(base)

[ show source ]

    # File activerecord/lib/active_record/transactions.rb, line 9
 9:     def self.included(base)
10:       base.extend(ClassMethods)
11: 
12:       base.class_eval do
13:         [:destroy, :save, :save!].each do |method|
14:           alias_method_chain method, :transactions
15:         end
16:       end
17:     end
Public Instance methods
rollback_active_record_state!() {|| ...}

Reset id and @new_record if the transaction rolls back.

[ show source ]

     # File activerecord/lib/active_record/transactions.rb, line 204
204:     def rollback_active_record_state!
205:       id_present = has_attribute?(self.class.primary_key)
206:       previous_id = id
207:       previous_new_record = new_record?
208:       yield
209:     rescue Exception
210:       @new_record = previous_new_record
211:       if id_present
212:         self.id = previous_id
213:       else
214:         @attributes.delete(self.class.primary_key)
215:         @attributes_cache.delete(self.class.primary_key)
216:       end
217:       raise
218:     end
transaction(&block)

See ActiveRecord::Transactions::ClassMethods for detailed documentation.

[ show source ]

     # File activerecord/lib/active_record/transactions.rb, line 187
187:     def transaction(&block)
188:       self.class.transaction(&block)
189:     end
with_transaction_returning_status(method, *args)

Executes method within a transaction and captures its return value as a status flag. If the status is true the transaction is committed, otherwise a ROLLBACK is issued. In any case the status flag is returned.

This method is available within the context of an ActiveRecord::Base instance.

[ show source ]

     # File activerecord/lib/active_record/transactions.rb, line 226
226:     def with_transaction_returning_status(method, *args)
227:       status = nil
228:       self.class.transaction do
229:         status = send(method, *args)
230:         raise ActiveRecord::Rollback unless status
231:       end
232:       status
233:     end