[null,null,["最后更新时间 (UTC):2024-11-26。"],[[["Ordering End-to-End displays a tip selector during checkout, allowing customers to add gratuity to their order, which is sent within the `SubmitOrderRequestMessage`."],["Restaurants can hide the tip selector using the `ServingConfig.disableTipWidget` in their inventory data feeds."],["Restaurants can set a fixed gratuity amount or a suggested gratuity amount that users can modify through `CheckoutResponseMessage`."],["Restaurants can refuse gratuity altogether by including a `GRATUITY` line item with a blank amount in the `CheckoutResponseMessage`."]]],["During checkout, the Ordering End-to-End system displays a tip selector, allowing customers to choose a gratuity amount. This amount is sent as a `GRATUITY` `LineItem` in the `SubmitOrderRequestMessage`. The tip selector can be hidden using `ServingConfig.disableTipWidget`. Restaurants can set a fixed gratuity, suggest a modifiable gratuity using `USER_MODIFIABLE`, or disable gratuity by providing a blank amount in `ProposedOrder.otherItems` within `CheckoutResponseMessage`. These options are implemented with the type `GRATUITY` in the `LineItem`.\n"]]