javascript - React - 单击按钮时禁用行
问题描述
我到处寻找这个,但每个例子似乎都不符合我想要的。单击按钮后,对于特定的表格行,我需要禁用该当前行,或者更好地禁用该行上的按钮。
我之前编写的代码只是禁用了每一行的按钮。这是不正确的。对于某些上下文,请参阅我正在编写的应用程序的屏幕截图:
当用户单击Generate Journey
特定行时,我需要禁用该特定行的“生成旅程”按钮,以阻止他们再次执行此操作(这将导致服务器端出现问题)。
我猜对有 React 经验的人来说,这是一项简单的任务,但我尝试了不同的东西,但每一种都没有给我想要的结果。
所以这是我的代码:
上面截图的渲染函数如下:
render() {
return (
<div className="polls-container">
<div className="dashboard-title" style={{paddingTop: "2%", marginLeft: "-50px"}}>
<h2>Dashboard</h2>
</div>
{
!this.state.loading && this.state.results.length > 0 ? (
<RouteTable buttonDisabled ={this.state.emulateButtonDisabled} results={this.state.results} generateJourney={this.generateJourney} startEmulation={this.getJourneyEmulations}/>
) : null
}
{
!this.state.isLoading && this.state.results.length === 0 ? (
<div className="no-polls-found">
<span>No Active Journey Generations</span>
</div>
): null
}
{
this.state.isLoading ?
<LoadingIndicator />: null
}
</div>
);
}
}
这基本上调用了Route Table
组件,该组件呈现屏幕截图中看到的表格。注意我是如何results={this.state.results} generateJourney={this.generateJourney} startEmulation={this.getJourneyEmulations}
作为道具传递下去的。
results 道具基本上就是获取的表数据。'generateJourney' 函数的代码如下(Generate Journey
点击按钮时执行):
generateJourney = (customerId, startDate, endDate, linkedCustomers, lat, lng) => {
let confirmGenerateJourney = window.confirm('Are you sure you want to start this Journey Generation?')
if (confirmGenerateJourney) {
fetch('http://10.10.52.149:8081/generate-journeys', {
method: 'POST',
mode:'cors',
headers: {
'Content-Type': 'application/json',
'Access-Control-Allow-Origin': '*',
},
body: JSON.stringify( {
customerId: customerId,
startDate: startDate,
endDate: endDate,
serviceIds: linkedCustomers,
homeLat: lat,
homeLng: lng
})
}).then(response => response.json())
.catch(err => console.log(err))
notification.success({
message: 'Kinesis Fake Telemetry',
description: "Journey has Started being Generated",
});
fetch('http://localhost:8080/api/routeGen/updateCustomerStatus', {
method: 'PUT',
mode:'cors',
headers: {
'Content-Type': 'application/json',
'Access-Control-Allow-Origin': '*',
},
body: JSON.stringify( {
customerId: customerId,
status: 1
})
}).then(response => response.json())
.catch(err => console.log(err))
window.location.reload();
}
}
没什么特别的,只是简单地调用 API 来 POST 或 PUT 数据。在此之后,startEmulation={this.getJourneyEmulations}
这是单击Emulate
按钮时单击的代码。这基本上会在我们模拟它之前检查旅程是否已经生成。(等待完成状态)
我的 RouteTable 类如下:
export class RouteTable extends Component {
constructor(props) {
super(props);
}
getStatus(result) {
let status;
if (result.customerStatus === 0) {
status = (<Badge color={'secondary'}> Pre Journey Generation</Badge>)
} else if(result.customerStatus === 1) {
status = (<Badge color={'success'}> In Journey Generation</Badge>)
} else if (result.customerStatus === 2) {
status = (<Badge color={'info'}> Ready for Emulation</Badge>)
} else {
status = (<Badge href="/journeyEmulation" color={'danger'}> In Emulation</Badge>)
}
return status;
}
render() {
const {startEmulation, buttonDisabled} = this.props;
const items = this.props.results.map(result => {
const serviceIdList = [];
const deviceRequests = [];
result.linkedCustomers.map(x => { const emulationData = {"imei": x.imei, "serviceId": x.serviceId, "deviceType": "CALAMP"}
deviceRequests.push(emulationData)
});
result.linkedCustomers.map(x => {serviceIdList.push(x.serviceId);});
return (
<tr key={result.linkedCustomerId}>
<th scope="row">{result.customerName}</th>
<td>{result.linkedCustomerId}</td>
<td>{result.numDevices}</td>
<td>{result.startDate}</td>
<td>{result.endDate}</td>
<td>{result.lat}</td>
<td>{result.lng}</td>
<td> {this.getStatus(result)}</td>
<td>
<div style={{width:"100%"}}>
<Button style={{width: "50%"}} color="primary" onClick={() => this.props.generateJourney(result.linkedCustomerId, result.startDate, result.endDate, serviceIdList, result.lat, result.lng)} disabled={buttonDisabled}>Generate Journey</Button>
{' '}
<Button style={{width: "50%", marginTop: "4%"}} color="danger" onClick={() => startEmulation(result.linkedCustomerId, result.customerName, result.startDate, result.endDate, deviceRequests)}>Emulate Journey</Button>
</div>
</td>
</tr>
)
})
return (
<div className="tableDesign" style={{marginTop: "2%"}}>
<Table hover>
<thead>
<tr>
<th>Customer Name</th>
<th>Kinesis Customer Id</th>
<th>Number of Devices</th>
<th>Start Date</th>
<th>End Date</th>
<th>Home Lat</th>
<th>Home Long</th>
<th>Status</th>
<th>Actions</th>
</tr>
</thead>
<tbody>
{items}
</tbody>
</Table>
</div>
)
}
现在我的问题是如何禁止用户两次生成旅程?我已经尝试过发布的解决方案,它只是禁用每一行的所有按钮。任何帮助将不胜感激,因为这变得令人沮丧!我猜我可以以某种方式使用表格的行键
<tr key {result.linkedCustomerId}>
来定位特定按钮以禁用?
谢谢你的帮助 :)
***** 编辑 *****
generateJourney = (customerId, startDate, endDate, linkedCustomers, lat, lng) => {
let confirmGenerateJourney = window.confirm('Are you sure you want to start this Journey Generation?')
if (confirmGenerateJourney) {
this.setState({generatingId: customerId});
fetch('http://10.10.52.149:8080/generate-journeys', {
method: 'POST',
mode:'cors',
headers: {
'Content-Type': 'application/json',
'Access-Control-Allow-Origin': '*',
},
body: JSON.stringify( {
customerId: customerId,
startDate: startDate,
endDate: endDate,
serviceIds: linkedCustomers,
homeLat: lat,
homeLng: lng
})
}).then(response => {
this.setState({generatingId: null});
// response.json();
}).catch(err => {
this.setState({generatingId: null});
console.log(err)
})
notification.success({
message: 'Kinesis Fake Telemetry',
description: "Journey has Started being Generated",
});
fetch('http://localhost:8080/api/routeGen/updateCustomerStatus', {
method: 'PUT',
mode:'cors',
headers: {
'Content-Type': 'application/json',
'Access-Control-Allow-Origin': '*',
},
body: JSON.stringify( {
customerId: customerId,
status: 1
})
}).then(response => response.json())
.catch(err => console.log(err))
// window.location.reload();
}
}
传递给 RouteTable 的道具
{
!this.state.loading && this.state.results.length > 0 ? (
<RouteTable generatingId ={this.state.generatingId} results={this.state.results} generateJourney={this.generateJourney} startEmulation={this.getJourneyEmulations}/>
) : null
}
然后在路由表中:
<Button style={{width: "50%"}} color="primary" onClick={() => this.props.generateJourney(result.linkedCustomerId, result.startDate, result.endDate, serviceIdList, result.lat, result.lng)} disabled={this.props.generatingId === result.linkedCustomerId}>Generate Journey</Button>
解决方案
一种方法是:
- 在您使用的组件上
RouteTable
,创建一个名为generatingId
. <RouteTable>
为被调用者创建一个新道具,generatingId
并将this.state.generatingId
其作为其值。- 在您的
generateJourney
函数上,this.setState({generatingId: customerId})
在 AJAX 调用之前执行一个。然后在 .then 和 .catch 里面,做一个this.setState({generatingId: null})
- 现在在您的
RouteTable
组件中,更新您的 Row 的生成旅程按钮,如下所示:
<Button style={{width: "50%"}} color="primary" onClick={() => this.props.generateJourney(result.linkedCustomerId, result.startDate, result.endDate, serviceIdList, result.lat, result.lng)} disabled={this.props.generatingId === result.linkedCustomerId}>Generate Journey</Button>
当您单击 Generate Journey 按钮时会发生什么,generateJourney 函数会将客户的 ID 设置为正在生成的 ID。这个新值将被传递给您的 RouteTable,然后将呈现您的表格,并且由于行的按钮将检查generatingId
道具是否等于customerId
该行所针对的,如果语句为真,它将禁用该行上的按钮.
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