Class: DataMapper::TransactionBoundaries

Inherits:
Object
  • Object
show all
Defined in:
lib/rack_datamapper/transaction_boundaries.rb

Defined Under Namespace

Classes: Rollback

Instance Method Summary collapse

Constructor Details

#initialize(app, name = :default) ⇒ TransactionBoundaries

Returns a new instance of TransactionBoundaries.



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# File 'lib/rack_datamapper/transaction_boundaries.rb', line 6

def initialize(app, name = :default)
  @app = app
  @name = name.to_sym
end

Instance Method Details

#call(env) ⇒ Object 



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# File 'lib/rack_datamapper/transaction_boundaries.rb', line 11

def call(env)
  status, headers, response = nil, nil, nil
  begin
    transaction = DataMapper::Transaction.new(DataMapper.repository(@name))
    transaction.commit do
      status, headers, response = @app.call(env)
      raise Rollback if status >= 400 or status < 200
    end
  rescue Rollback 
    # ignore, needed to trigger the rollback on the transaction
  end
  [status, headers, response]
end