我的reactjs项目有问题。
我正在尝试使用包含添加,删除,编辑和排序选项的数据库数据创建表。添加数据已完成。删除选项未成功完成,因为我只能通过手动输入id并按按钮来删除行。我想为每行设置按钮以删除记录。现在我有这个:
import React, {Component} from 'react';
import logo from './logo.svg';
import './App.css';
class App extends Component{
state = {
carowner: [],
owner:
{
first_name:'',
last_name:'',
phone:'',
email:''
},
delowner:
{
owner_id:''
}
}
componentDidMount()
{
this.getOwners();
}
getOwners = _ =>{
fetch('http://localhost:4000/owners')
.then(response => response.json())
.then(response => this.setState({ carowner: response.data }))
.catch(err => console.error(err))
}
addOwner = _ =>
{
const {owner} = this.state;
fetch(`http://localhost:4000/owners/add?first_name=${owner.first_name}&last_name=${owner.last_name}&phone=${owner.phone}&email=${owner.email}`)
.then(this.getOwners)
.catch(err => console.error(err))
}
delOwner = _ =>
{
const {delowner} = this.state;
fetch(`http://localhost:4000/owners/delete?owner_id=${delowner.owner_id}`)
.then(this.getOwners)
.catch(err => console.error(err))
}
renderCarOwner = ({owner_id,first_name,last_name,phone,email}) => <tr key={owner_id}><td>{owner_id}</td><td>{first_name}</td><td>{last_name}</td><td>{phone}</td><td>{email}</td><td><button onClick={() => {this.delOwner()}}>va</button></td></tr>
render()
{
const {carowner,owner,delowner} = this.state;
return(
<div className="centerblock">
<div>
<input value={owner.first_name} onChange={e => this.setState({owner:{...owner, first_name: e.target.value}})}/>
<input value={owner.last_name} onChange={e => this.setState({owner:{...owner, last_name: e.target.value}})}/>
<input value={owner.phone} onChange={e => this.setState({owner:{...owner, phone: e.target.value}})}/>
<input value={owner.email} onChange={e => this.setState({owner:{...owner, email: e.target.value}})}/>
<button onClick={this.addOwner}>Add owner</button>
</div>
<table >
<tr>
<th>ID</th>
<th>First name</th>
<th>Last name</th>
<th>Phone</th>
<th>Email</th>
<th>Action</th>
</tr>
{carowner.map(this.renderCarOwner)}
</table>
</div>
);
}
}
export default App;
输入人工ID的字段
<input value={delowner.owner_id} onChange={e => this.setState({delowner:{...owner, owner_id: e.target.value}})}/>
网站视图的屏幕:
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我的reactjs项目有问题。我正在尝试使用添加,删除,编辑和排序选项的数据库数据创建表。添加数据已完成。删除选项未完成...
要删除的所有者的ID可以作为输入传递,如下所示