array ( 'user_id' => array ( 'type' => 'table:users', 'required' => true, 'pkey' => true, 'comment'=> '后台用户ID', ), 'role_id' => array ( 'type' => 'table:roles', 'required' => true, 'pkey' => true, 'comment' => '角色ID', ), ), 'comment' => '后台权限角色和用户关联表', 'version' => '$Rev: 40654 $', );