gistfile1.txt

# First extend ActiveRecord::Base to allow us to override connections
module ActiveRecord
  class Base

    # Sets the active connection to conn and runs the given block. Active
    # connection is reset to it's previous value once the block finishes.
    def self.using_connection(conn)
      old_connection = use_connection(conn)
      ret = yield if block_given?
      use_connection(old_connection)
      ret
    end

    # Sets the active connection to conn, returns the previously active connection
    def self.use_connection(conn)
      old_active_connection = active_connections[active_connection_name]
      active_connections[active_connection_name] = conn
      old_active_connection
    end
  
  end
end