【发布时间】:2020-06-11 06:26:56
【问题描述】:
我正在研究 React Js,我遇到了一个问题,即我需要存储大量的值/属性。 我的代码如下:
import React from 'react';
import axios from 'axios';
import '../Container/Company.css'
import { Container, Col, Form, Row, FormGroup, Label, Input, Button } from 'reactstrap';
class AddCompany extends React.Component {
constructor(props) {
super(props)
this.state = {
CompanyName: '',
CompanyReg: '',
CompanyAddr1: '',
CompanyAddr2: '',
CompanyAddr3: '',
City: '',
State: '',
PostCode: '',
Phone: '',
Fax: '',
ContactPerson: '',
Email: '',
DealerName: '',
Phone2: '',
Country: '',
Remark: '',
DealerCode: '',
SerialNo: '',
IsActive: '',
}
}
AddCompany = () => {
axios.post('http://localhost:57025/api//companyedit/', {
CompanyName: this.state.CompanyName,
CompanyReg: this.state.CompanyReg,
CompanyAddr1: this.state.CompanyAddr1,
CompanyAddr2: this.state.CompanyAddr2,
CompanyAddr3: this.state.CompanyAddr3,
City: this.state.City,
PostCode: this.state.PostCode,
Phone: this.state.Phone,
Fax: this.state.Fax,
ContactPerson: this.state.ContactPerson,
Email: this.state.Email,
DealerName: this.state.DealerName,
Phone2: this.state.Phone2,
Country: this.state.Country,
Remark: this.state.Remark,
DealerCode: this.state.DealerCode,
SerialNo: this.state.SerialNo,
IsActive: this.state.IsActive})
.then(json => {
if (json.data.Status === 'Success') {
console.log(json.data.Status);
alert("Data Save Successfully");
this.props.history.push('/CompanyList')
}
else {
alert('Data not Saved');
debugger;
this.props.history.push('/CompanyList')
}
})
}
handleChange = (e) => {
this.setState({ [e.target.name]: e.target.value });
}
render() {
return (
<Container className="App">
<h4 className="PageHeading">Enter Company Informations</h4>
<Form className="form">
<Col>
<FormGroup row>
<Label for="CompanyName" sm={2}>CompanyName</Label>
<Col sm={10}>
<Input type="text" CompanyName="CompanyName" onChange={this.handleChange} value={this.state.CompanyName} placeholder="Enter Name" />
</Col>
</FormGroup>
<FormGroup>
<Label for="CompanyReg" sm={2}>CompanyReg</Label>
<Col sm={10}>
<Input type="text" CompanyReg="CompanyReg" onChange={this.handleChange.CompanyReg} value={this.state.CompanyReg} placeholder="Enter Reg" />
</Col>
</FormGroup>
<FormGroup>
<Label for="CompanyAddr1" sm={2}>CompanyAddr1</Label>
<Col sm={10}>
<Input type="text" CompanyAddr1="CompanyAddr1" onChange={this.handleChange.CompanyAddr1} value={this.state.CompanyAddr1} placeholder="Enter Address Line 1" />
</Col>
</FormGroup>
<FormGroup>
<Label for="CompanyAddr2" sm={2}>CompanyAddr2</Label>
<Col sm={10}>
<Input type="text" CompanyReg="CompanyAddr2" onChange={this.handleChange.CompanyAddr2} value={this.state.CompanyAddr2} placeholder="Enter Address Line 2" />
</Col>
</FormGroup>
<FormGroup>
<Label for="CompanyAddr3" sm={2}>CompanyAddr3</Label>
<Col sm={10}>
<Input type="text" CompanyAddr3="CompanyAddr3" onChange={this.handleChange.CompanyAddr3} value={this.state.CompanyAddr3} placeholder="Enter Address Line 3" />
</Col>
</FormGroup>
<FormGroup>
<Label for="City" sm={2}>City</Label>
<Col sm={10}>
<Input type="text" City="City" onChange={this.handleChange.City} value={this.state.City} placeholder="Enter City" />
</Col>
</FormGroup>
<FormGroup>
<Label for="State" sm={2}>State</Label>
<Col sm={10}>
<Input type="text" State="State" onChange={this.handleChange.State} value={this.state.State} placeholder="Enter State" />
</Col>
</FormGroup>
<FormGroup>
<Label for="PostCode" sm={2}>PostCode</Label>
<Col sm={10}>
<Input type="text" PostCode="PostCode" onChange={this.handleChange.PostCode} value={this.state.PostCode} placeholder="Enter PostCode" />
</Col>
</FormGroup>
<FormGroup>
<Label for="Phone" sm={2}>Phone</Label>
<Col sm={10}>
<Input type="text" Phone="Phone" onChange={this.handleChange.Phone} value={this.state.Phone} placeholder="Enter Phone" />
</Col>
</FormGroup>
<FormGroup>
<Label for="Fax" sm={2}>Fax</Label>
<Col sm={10}>
<Input type="text" Fax="Fax" onChange={this.handleChange.Fax} value={this.state.Fax} placeholder="Enter Fax" />
</Col>
</FormGroup>
<FormGroup>
<Label for="ContactPerson" sm={2}>ContactPerson</Label>
<Col sm={10}>
<Input type="text" ContactPerson="ContactPerson" onChange={this.handleChange.ContactPerson} value={this.state.ContactPerson} placeholder="Enter ContactPerson" />
</Col>
</FormGroup>
<FormGroup>
<Label for="Email" sm={2}>Email</Label>
<Col sm={10}>
<Input type="text" Email="Email" onChange={this.handleChange.Email} value={this.state.Email} placeholder="Enter Email" />
</Col>
</FormGroup>
<FormGroup>
<Label for="DealerName" sm={2}>DealerName</Label>
<Col sm={10}>
<Input type="text" DealerName="DealerName" onChange={this.handleChange.DealerName} value={this.state.DealerName} placeholder="Enter DealerName" />
</Col>
</FormGroup>
<FormGroup>
<Label for="Phone2" sm={2}>Phone2</Label>
<Col sm={10}>
<Input type="text" Phone2="Phone2" onChange={this.handleChange.Phone2} value={this.state.Phone2} placeholder="Enter Second Phone Number" />
</Col>
</FormGroup>
<FormGroup>
<Label for="Country" sm={2}>Country</Label>
<Col sm={10}>
<Input type="text" Country="Country" onChange={this.handleChange.Country} value={this.state.Cpuntry} placeholder="Enter Country" />
</Col>
</FormGroup>
<FormGroup>
<Label for="Remark" sm={2}>Remark</Label>
<Col sm={10}>
<Input type="text" Remark="Remark" onChange={this.handleChange.Remark} value={this.state.Remark} placeholder="Enter Remark" />
</Col>
</FormGroup>
<FormGroup>
<Label for="DealerCode" sm={2}>DealerCode</Label>
<Col sm={10}>
<Input type="text" PostCode="DealerCode" onChange={this.handleChange.DealerCode} value={this.state.DealerCode} placeholder="Enter DealerCode" />
</Col>
</FormGroup>
<FormGroup>
<Label for="SerialNo" sm={2}>SerialNo</Label>
<Col sm={10}>
<Input type="text" SerialNo="SerialNo" onChange={this.handleChange.SerialNo} value={this.state.SerialNo} placeholder="Enter SerialNo" />
</Col>
</FormGroup>
<FormGroup>
<Label for="IsActive" sm={2}>IsActive</Label>
<Col sm={10}>
<Input type="text" IsActive="IsActive" onChange={this.handleChange.IsActive} value={this.state.IsActive} placeholder="Enter Y or N" />
</Col>
</FormGroup>
</Col>
<Col>
<FormGroup row>
<Col sm={5}>
</Col>
<Col sm={1}>
<button type="button" onClick={this.Addstudent} className="btn btn-success">Submit</button>
</Col>
<Col sm={1}>
<Button color="danger">Cancel</Button>{' '}
</Col>
<Col sm={5}>
</Col>
</FormGroup>
</Col>
</Form>
</Container>
);
}
}
export default AddCompany;
我试图通过存储用户键入的信息并将此信息传递给我的后端 api 来 AddCompany。似乎这是一种笨拙的方法。
有没有办法从 api 获取、存储或声明等中缩短我所有的属性写入形式?或者任何人有更好的想法来写这个?
【问题讨论】:
-
一,你可以简单地通过 axios 发送
this.state。 -
如果要发送对象中的所有内容,可以在
this.state上使用扩展运算符。 -
嗨@ChrisG 我是 React 的新手,所以我想请你演示一下如何以你的方式做?非常感谢!
-
与反应无关;您正在创建一个副本,但这根本不是必需的:
axios.post('http://localhost:57025/api//companyedit/', this.state).then(...Axios 只是读取该数据,因此直接传递状态是非常安全的。 -
你有
CompanyName="CompanyName",应该是id="CompanyName"。也没有this.handleChange.CompanyName,您需要将其设为参数并使用柯里化。见这里:codesandbox.io/s/cool-merkle-gscvm(替换了前三个字段,每个字段一行)。
标签: javascript reactjs react-router axios