[quote="javier"] > i am going to try, but with inherit it just modified invoice and not create > another object with relation.
This had been discussed previously: http://www.openerp.com/forum/topic6771.html But you can simulate one2one relation with a many2one field and sql constraints, just use unique clause. class account_retention(osv.osv): _name = "account.retention" _description = "Comprobante de Retencion" _columns = { invoice_num : fields.many2one('account.invoice', 'number', required=True), } _sql_constraints = [ ('inv_num_uniq', 'unique (invoice_num)', 'The invoice Number must be unique !') ] you can see an example of sql constraints on partner module Saludos,[/quote] ------------------------ javier Venezuela -------------------- m2f -------------------- -- http://www.openerp.com/forum/viewtopic.php?p=25340#25340 -------------------- m2f -------------------- _______________________________________________ Tinyerp-users mailing list http://tiny.be/mailman/listinfo/tinyerp-users
