如何解决通过对象数组时,如何从typeahead获取id而不是labelKey?
我有这样的react-bootstrap-typeahead设置:
// MusicServices.jsx
import React,{Fragment,useState} from 'react';
import { Form } from 'react-bootstrap';
import { Typeahead } from 'react-bootstrap-typeahead';
const MusicServices = ({services}) => {
const [musicServiceID,setMusicServiceSelection] = useState([]);
const [transferDetailID,setTransferDetailSelection] = useState([]);
const musicServiceDetails = Object.keys(services).map((serviceID) => {
return {
id: serviceID,name: services[serviceID].name
}
});
const getTransferDetails = () => {
let transferDetailSelections = []
if (musicServiceID.length) {
transferDetailSelections = services[musicServiceID[0].id].transferDetails;
}
return (
<Form.Group>
<Form.Label>Transfer Details</Form.Label>
<Typeahead
name="transferdetail"
id="transfer-detail"
labelKey="name"
onChange={setTransferDetailSelection}
options={transferDetailSelections}
placeholder="Choose a Transfer Detail..."
selected={transferDetailID}
/>
</Form.Group>
)
}
return (
<Fragment>
<Form.Group>
<Form.Label>Music Services</Form.Label>
<Typeahead
name="musicservice"
id="music-service"
labelKey="name"
onChange={(selected) => {
setMusicServiceSelection(selected)
}}
options={musicServiceDetails}
placeholder="Choose a music service..."
selected={musicServiceID}
/>
</Form.Group>
{getTransferDetails()}
</Fragment>
);
};
export default MusicServices;
我使用相同的代码ina。几个地方,所以我将其提取出来以实现其自身功能...
所以我以这种形式使用它:
import React from 'react';
const Jumbotron = require('react-bootstrap').Jumbotron;
const Container = require('react-bootstrap').Container;
import Form from 'react-bootstrap/Form';
const Button = require('react-bootstrap').Button;
import MusicServices from '../../components/auth/MusicServices';
const Generate = ({services}) => {
const handleSubmit = (event) => {
const formEvent = event.currentTarget;
console.log(event.target.elements)
event.preventDefault();
event.stopPropagation();
};
let mservices = {123455: {name: 'abc',transferDetails: [{id: 6789,name: 'der'}]}}
return (
<>
<Jumbotron>
<Container>
<h1 className="display-3">Generate</h1>
<p>{session.user.name},this will generate a new key pair to be stored on the filestore and against a transfer detail.</p>
</Container>
</Jumbotron>
<Container>
<Form onSubmit={handleSubmit}>
<Form.Group controlId="service">
<MusicServices services={mservices}></MusicServices>
</Form.Group>
<Button variant="primary" type="submit">
Generate key pair
</Button>
</Form>
</Container>
</>
)
}
export default Generate
在我的handleSubmit()
函数中,我想提前获取transfer-detail
的值,但是该值返回为“ der”。我真正想要的是id值“ 6789”,并向用户显示“ der”以预先输入。
我看不到如何获得该值。猜想它在transferDetailID
中,但是在我的Generate.jsx页面中似乎不可用。
解决方法
sectionTableSchema.txt
钩子必须位于父级中并传递给子级,因此在这种情况下,它们需要从useState
功能组件中取出并放入{{1} }功能组件。
然后,您必须将变量和设置器都传递给子代。因此,在MusicServices
功能组件中,我更改了代码:
Generate
然后,这允许Generate
函数访问const Generate = ({services}) => {
const [musicServiceID,setMusicServiceSelection] = useState([]);
const [transferDetailID,setTransferDetailSelection] = useState([]);
return (
<>
...
<Container>
<Form onSubmit={handleSubmit}>
<Form.Group controlId="service">
{
MusicServices(
services,musicServiceID,setMusicServiceSelection,transferDetailID,setTransferDetailSelection
)
}
</Form.Group>
</Form>
</Container>
...
</>
)
};
和handleSubmit
的状态。
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