check parent_id type constraint before create/write remove parent_id eval 0 bzr revid: al@openerp.com-20120912005721-ofpgkaorlm4zrwgy
bzr revid: fde@openerp.com-20101221100423-tomvr10f9am22msn
bzr revid: nicolas.vanhoren@openerp.com-20101028133403-tkwilnsdv26rt5y2