Module: ActiveRecord::Transactions

Extended by:
ActiveSupport::Concern
Included in:
Base
Defined in:
lib/active_record/transactions.rb

Overview

See ActiveRecord::Transactions::ClassMethods for documentation.

Defined Under Namespace

Modules: ClassMethods

Constant Summary collapse

ACTIONS =

:nodoc:

[:create, :destroy, :update]
CALLBACK_WARN_MESSAGE =

:nodoc:

"Currently, Active Record suppresses errors raised " \
"within `after_rollback`/`after_commit` callbacks and only print them to " \
"the logs. In the next version, these errors will no longer be suppressed. " \
"Instead, the errors will propagate normally just like in other Active " \
"Record callbacks.\n" \
"\n" \
"You can opt into the new behavior and remove this warning by setting:\n" \
"\n" \
"  config.active_record.raise_in_transactional_callbacks = true\n\n"

Instance Method Summary collapse

Instance Method Details

#add_to_transaction ⇒ Object

Add the record to the current transaction so that the after_rollback and after_commit callbacks can be called.



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# File 'lib/active_record/transactions.rb', line 330

def add_to_transaction
  if has_transactional_callbacks?
    self.class.connection.add_transaction_record(self)
  else
    sync_with_transaction_state
    set_transaction_state(self.class.connection.transaction_state)
  end
  remember_transaction_record_state
end

#committed!(should_run_callbacks = true) ⇒ Object

Call the after_commit callbacks.

Ensure that it is not called if the object was never persisted (failed create), but call it after the commit of a destroyed object.



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# File 'lib/active_record/transactions.rb', line 313

def committed!(should_run_callbacks = true) #:nodoc:
  _run_commit_callbacks if should_run_callbacks && destroyed? || persisted?
ensure
  force_clear_transaction_record_state
end

#destroy ⇒ Object

:nodoc:



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# File 'lib/active_record/transactions.rb', line 280

def destroy #:nodoc:
  with_transaction_returning_status { super }
end

#rollback_active_record_state! ⇒ Object

Reset id and @new_record if the transaction rolls back.



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# File 'lib/active_record/transactions.rb', line 299

def rollback_active_record_state!
  remember_transaction_record_state
  yield
rescue Exception
  restore_transaction_record_state
  raise
ensure
  clear_transaction_record_state
end

#rolledback!(force_restore_state = false, should_run_callbacks = true) ⇒ Object

Call the after_rollback callbacks. The force_restore_state argument indicates if the record state should be rolled back to the beginning or just to the last savepoint.



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# File 'lib/active_record/transactions.rb', line 321

def rolledback!(force_restore_state = false, should_run_callbacks = true) #:nodoc:
  _run_rollback_callbacks if should_run_callbacks
ensure
  restore_transaction_record_state(force_restore_state)
  clear_transaction_record_state
end

#save ⇒ Object

:nodoc:



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# File 'lib/active_record/transactions.rb', line 284

def save(*) #:nodoc:
  rollback_active_record_state! do
    with_transaction_returning_status { super }
  end
end

#save! ⇒ Object

:nodoc:



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# File 'lib/active_record/transactions.rb', line 290

def save!(*) #:nodoc:
  with_transaction_returning_status { super }
end

#touch ⇒ Object

:nodoc:



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# File 'lib/active_record/transactions.rb', line 294

def touch(*) #:nodoc:
  with_transaction_returning_status { super }
end

#transaction(options = {}, &block) ⇒ Object

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



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# File 'lib/active_record/transactions.rb', line 276

def transaction(options = {}, &block)
  self.class.transaction(options, &block)
end

#with_transaction_returning_status ⇒ Object

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.



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# File 'lib/active_record/transactions.rb', line 346

def with_transaction_returning_status
  status = nil
  self.class.transaction do
    add_to_transaction
    begin
      status = yield
    rescue ActiveRecord::Rollback
      clear_transaction_record_state
      status = nil
    end

    raise ActiveRecord::Rollback unless status
  end
  status
ensure
  if @transaction_state && @transaction_state.committed?
    clear_transaction_record_state
  end
end