--- id
--- __id__
--- object_id         ruby 1.7 feature

    ƥ֥ȤФưդ֤ޤ륪֥ȤФ
    ƤɤΤ褦Ƥ뤫Ǥ

    id ᥽åɤκ̾ __id__ Ѱդ
    ꡢ饤֥ǤϸԤѤ侩ޤޤ __id__ 
    ٤ǤϤޤ

    ruby 1.7 feature: id ϡversion 1.7 Ǥϡobsolete 
    Ȥʤޤ

