I'm using a tsx file to add data into antd table but cannot add rows into it when I click on the button which have event: "handleAddTicket". But when I changed the line: const tickets: TicketLine[] = ticketLines;
to const tickets: TicketLine[] = [];
, the row was added into the table successfully, it was not an array, but the newest element . I don't know why it doesn't work though when I logged the ticketLines
variable, it showed the correct array.
import * as React from 'react';
import './index.less';
import { Button, Card, Col, Dropdown, Menu, Row, Table } from 'antd';
import { inject, observer } from 'mobx-react';
import OrderStore from '../../stores/orderStore';
import Stores from '../../stores/storeIdentifier';
import AppComponentBase from '../../components/AppComponentBase';
export interface IOrderProps {
orderStore: OrderStore;
}
export interface IOrderState {
ticketLines: TicketLine[];
}
export interface TicketLine {
key: number,
policyObject: any,
ticketType: string,
ticketAmount: 1,
region: any,
areaWindowTimeId: 0,
ticketComboPrice: number,
actionDelete: boolean
}
@inject(Stores.OrderStore)
@observer
class Order extends AppComponentBase<IOrderProps, IOrderState> {
async componentDidMount() {
await this.getAll();
}
async getAll() {
await this.props.orderStore.initialize();
}
constructor(props:IOrderProps) {
super(props);
this.state = {
ticketLines: []
};
}
public render() {
const { ticketComboOutput, policyObjectOutput } = this.props.orderStore;
const {ticketLines} = this.state;
const tickets: TicketLine[] = ticketLines;
const handleAddTicket = (item:any, menu:any) => {
const ticket: TicketLine = {
key: item.id,
policyObject: policyObjectOutput[0].name,
ticketType: item.description,
ticketAmount: 1,
region: item.areas[0].name,
areaWindowTimeId: 0,
ticketComboPrice: item.ticketComboPrice.price,
actionDelete: true
}
tickets.push(ticket);
// console.log(tickets);
this.setState({ticketLines: tickets});
};
console.log(ticketLines);
var items = policyObjectOutput.map(p =>
<Menu.Item key={p.id}>
<p>{p.name} - Giảm {p.policyObjectDiscount.discountPercent * 100}%</p>
</Menu.Item>
);
const menu = (
<Menu>{items}</Menu>
);
const columns = [
{
title: 'Đối tượng miễn giảm',
dataIndex: 'policyObject',
key: 'policyObject',
},
{
title: 'Loại vé',
dataIndex: 'ticketType',
key: 'ticketType',
},
{
title: 'Số lượng',
dataIndex: 'ticketAmount',
key: 'ticketAmount',
},
{
title: 'Khu vực',
dataIndex: 'region',
key: 'region',
},
{
title: 'Khung giờ',
dataIndex: 'areaWindowTimeId',
key: 'areaWindowTimeId',
},
{
title: 'Thành tiền',
dataIndex: 'ticketComboPrice',
key: 'ticketComboPrice'
},
{
title: 'Xóa',
dataIndex: 'actionDelete',
key: 'actionDelete'
}
];
return (
<>
<Row gutter={16}>
{ticketComboOutput.map(
item =>
<Card className='ticketCombo' key={item.id} title={item.name} style={{ width: 300 }}>
<p>Thông tin: {item.description}</p>
<p>Giá vé: {item.ticketComboPrice.price}</p>
<Row style={{'display': 'flex', 'justifyContent':'space-between'}}>
<Col>Khu vực:</Col>
<Col>
<ul> {
item.areas.map(a => <li key={a.id}>{a.name}</li>)
}</ul>
</Col>
</Row>
<Row style={{'display': 'flex', 'justifyContent':'space-between'}}>
<Col>
<Dropdown overlay={menu}>
<a>Đối tượng</a>
</Dropdown>
</Col>
<Col>
<Button
onClick={()=> handleAddTicket(item, menu)}
title="Chọn">Chọn</Button>
</Col>
</Row>
</Card>
)}
</Row>
<Table dataSource={ticketLines} columns= {columns}/>
</>
)
}
}
export default Order;
CodePudding user response:
Since you defined handleAddTicket
within the render method, it has a closure over a stale version of tickets
. So every time it's called, it's building on top of the previous render's version of your tickets
.
An event handler like handleAddTicket
would usually be a separate method in your component class. And instead of accessing tickets
via a closure, it should just access ticketLines in state.
There is a caveat when updating state in a class component. See https://reactjs.org/docs/faq-state.html
So I would do something like this:
private handleAddTicket (item:any, menu:any) {
const ticket: TicketLine = {
key: item.id,
policyObject: policyObjectOutput[0].name,
ticketType: item.description,
ticketAmount: 1,
region: item.areas[0].name,
areaWindowTimeId: 0,
ticketComboPrice: item.ticketComboPrice.price,
actionDelete: true
}
this.setState(state => {
return {
...state,
ticketLines: [
...state.ticketLines,
ticket
]
};
});
}