i know that a lot of ways to stop duplication in odoo, but I need the warning of duplication to appear with the existed record to go directly to it, this is the methods

@api.multi
@api.onchange('name', 'categ')
def check_id(self):
    all = self.env['muk_dms.directory']
    for record in self:
        rec = all.search([('name','=', record.name)])
        if rec:
           # what should I write here to display the wizard with link or any way to go to rec directly 
        else:
            pass

any help will be appreciated