def create_sale_order_line(self, order_id, product_id, ttc, discount, discount_price):
    if discount == 0:
        final_discount_price = ttc
    else:
        final_discount_price = discount_price
    return self.models.execute_kw(self.db, self.uid, self.password,
                                  'sale.order.line', 'create', [{'order_id': order_id, 'product_id': product_id,
                                                                 'fixed_discount': discount,
                                                                 'discount_price': final_discount_price,
                                                                 'price_unit': ttc,
                                                                 'price_total': ttc,
                                                                 'company_id': 2,
                                                                 'discount': 0, }])