Module: ActiveRecord::Transactions

Defined in:
lib/active_record/transactions.rb

Overview

:nodoc:

Defined Under Namespace

Modules: ClassMethods Classes: TransactionError

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.included(base) ⇒ Object 



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# File 'lib/active_record/transactions.rb', line 8

def self.included(base)
  base.extend(ClassMethods)

  base.class_eval do
    [:destroy, :save, :save!].each do |method|
      alias_method_chain method, :transactions
    end
  end
end

Instance Method Details

#destroy_with_transactions ⇒ Object

:nodoc:



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# File 'lib/active_record/transactions.rb', line 103

def destroy_with_transactions #:nodoc:
  transaction { destroy_without_transactions }
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 116

def rollback_active_record_state!
  id_present = has_attribute?(self.class.primary_key)
  previous_id = id
  previous_new_record = @new_record
  yield
rescue Exception
  @new_record = previous_new_record
  if id_present
    self.id = previous_id
  else
    @attributes.delete(self.class.primary_key)
    @attributes_cache.delete(self.class.primary_key)
  end  
  raise
end

#save_with_transactions(perform_validation = true) ⇒ Object

:nodoc:



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# File 'lib/active_record/transactions.rb', line 107

def save_with_transactions(perform_validation = true) #:nodoc:
  rollback_active_record_state! { transaction { save_without_transactions(perform_validation) } }
end

#save_with_transactions! ⇒ Object

:nodoc:



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# File 'lib/active_record/transactions.rb', line 111

def save_with_transactions! #:nodoc:
  rollback_active_record_state! { transaction { save_without_transactions! } }
end

#transaction(&block) ⇒ Object 



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# File 'lib/active_record/transactions.rb', line 99

def transaction(&block)
  self.class.transaction(&block)
end