odoo owl 如何重写父类方法

当你不想修改源码，又想在控件中新增自己参数的时候，你就可以这么干

 1 /** @odoo-module */
 2 import { Order, Orderline } from "@point_of_sale/app/store/models";
 3 import { patch } from "@web/core/utils/patch";
 4 
 5 patch(Orderline.prototype, {
 6     getDisplayData() {
 7     /**Add the product id to update the image**/
 8         return {
 9             ...super.getDisplayData(),
10             product_id: this.get_product().id,
11             
12         };
13     },
14 
15     export_as_JSON() {
16         return {
17             ...super.export_as_JSON(),
18             epc_barcode: this.epc_barcode,
19             
20         };
21     }
22 });
23 
24 // export class Orderline extends Order {
25 //     setup(_defaultObj, options) {
26 //         super.setup(...arguments);
27 //     }
28 // }
29 
30 patch(Order.prototype, {
31     set_orderline_options(orderline, options) {
32         if (options.epc_barcode !== undefined) {
33             orderline.epc_barcode = options.epc_barcode
34         }
35         super.set_orderline_options(...arguments)
36         
37     }
38     
39 });

 或者这样操作

 1 /** @odoo-module */
 2 
 3 import { Orderline } from "@point_of_sale/app/generic_components/orderline/orderline";
 4 import { patch } from "@web/core/utils/patch";
 5 import { useService } from "@web/core/utils/hooks";
 6 
 7 
 8 const itemRemoveOrder = {
 9     setup() {
10         super.setup();
11         this.numberBuffer = useService("number_buffer");
12     },
13     clear_button_fun() {
14         this.numberBuffer.sendKey("Backspace");
15         this.numberBuffer.sendKey("Backspace");
16     }
17 };
18 
19 patch(Orderline.prototype, itemRemoveOrder);