hi,

i am using this function to print a pos receipt in my costume module but it shows nothing, no errors or pdf files  

    @api.one
    def print_report(self):
        cr, uid, context = self.env.args
        pos_ids = self.pool.get('pos.order').search(cr, uid,[('id', '=', self.pos_order.id)], context=context)
        datas = {
            'ids': pos_ids,
            'model':'pos.order',
            'from': self.pos_order.read()[0],
        }
        print pos_ids
        print datas
        # print data['form']
        ret_val = self.env['report'].get_action(self.pos_order, 'point_of_sale.report_receipt', data=datas)
        return ret_val