react实现列表增删改查的小demo(class组件版)-编程知识

前言

react的语法上就是比vue麻烦不少,既然要开手动挡,那就开吧,一个基础的demo

效果图

列表

新增弹窗

编辑弹框

新增一条数据后的效果

代码

根组件 index.jsx

import React, { Component,createRef} from 'react'
import withRouter from '../../utils/withRouter'
import GlobalFormCom from './globalForm'
import GlobalTable from './globalTable'
import './index.less'
import { cloneDeep } from 'lodash'
import { Input, Select , Button , Modal } from 'antd';
import PubSub from 'pubsub-js'export default withRouter(class index extends Component {state = {searchForm:{searchName:'王惊涛',selectValue:'jsCoder'},modalInfo:{isModalOpen:false,modalTitle:'新建数据',},doneType:'add',addFormData:{},editFormData:{},editRecord:{}}searchDom = {width: '200px',marginRight:'16px'}selectOptions = [{label:'前端',value:'jsCoder'},{label:'后端',value:'pythonCoder'}]changeNameInput = (e,name) => {this.setValue('searchForm',this.state.searchForm,name,e.target.value)}changeSelectValue = (e,name) =>{this.setValue('searchForm',this.state.searchForm,name,e)}setValue = (name,data,key,value,fn)=>{let _data = cloneDeep(data)_data[key] = valuethis.setState({[name]:_data},()=>{if(fn){fn()}})}openModal = (flag) =>{this.setState({doneType:flag})let fn = ()=>{this.setValue('modalInfo',this.state.modalInfo,'modalTitle','新建数据')}this.setValue('modalInfo',this.state.modalInfo,'isModalOpen',true,fn)}editHandler = (editData)=>{this.setState({doneType:'edit'},()=>{this.setValue('modalInfo',this.state.modalInfo,'modalTitle','编辑数据')})let data = cloneDeep(editData)this.setState({editRecord:data})this.setValue('modalInfo',this.state.modalInfo,'isModalOpen',true,()=>{setTimeout(()=>{PubSub.publish('editForm',this.state.editRecord)})})}handleOk = ()=>{// this.handleCancel()if(this.state.doneType === 'add'){PubSub.publish('getFormData','add')}else if(this.state.doneType === 'edit'){PubSub.publish('getFormData','edit')}}handleCancel = ()=>{let fn = ()=>{}this.setValue('modalInfo',this.state.modalInfo,'isModalOpen',false,fn)}globalFormStyle = ()=>{if(this.state.isModalOpen === false){return {display:none}}}sendFormData = (formData,flag)=>{if(flag === 'add'){this.setState({addFormData:formData},()=>{PubSub.publish('addTableData',this.state.addFormData)})}else if(flag === 'edit'){this.setState({editFormData:formData},()=>{PubSub.publish('editTableData',this.state.editFormData)})}}reqList = ()=>{setTimeout(()=>{PubSub.publish('reqList')})}render() {return (<div className='content'><div className='topSearch'><span className='labelSpan'>姓名:</span><Input placeholder="输入姓名" onChange={(e)=>this.changeNameInput(e,'searchName')} value={this.state.searchForm.searchName} style={this.searchDom} /><span className='labelSpan'>类型:</span><SelectdefaultValue={this.state.searchForm.selectValue}style={this.searchDom}allowClearoptions={this.selectOptions}onChange={(e)=>this.changeSelectValue(e,'selectValue')}/><Button type='primary' onClick={this.reqList}>数据重置</Button><Button type='primary' className='addBtn' onClick={()=>this.openModal('add')}>新增</Button></div><div className='tableBox'><GlobalTable addFormData={this.state.addFormData}  closeModal={this.handleCancel} editHandler={this.editHandler}></GlobalTable></div><div className='footer'></div><Modal title={this.state.modalInfo.modalTitle} open={this.state.modalInfo.isModalOpen} onOk={this.handleOk} onCancel={this.handleCancel} width="800px" okText="确定" cancelText="取消" destroyOnClose><GlobalFormCom sendFormData={this.sendFormData}></GlobalFormCom></Modal></div>)}
})

表格组件 globalTable.jsx

import React, { Component } from 'react'
import withRouter from '../../utils/withRouter'
import { Table, Tag, Space, Button } from 'antd';
const { Column, ColumnGroup } = Table;
import PubSub from 'pubsub-js';
import { cloneDeep } from 'lodash';
export default withRouter(class globalTable extends Component {state = {data: []}genderMap = {man: '男',woman: '女'}workMap = {pythonCoder: '后端',jsCoder: '前端'}componentDidMount() {this.reqList()PubSub.unsubscribe('addTableData')PubSub.subscribe('addTableData',(msg,data)=>{this.setTableHandler(data,'add')})PubSub.unsubscribe('editTableData')PubSub.subscribe('editTableData',(msg,data)=>{this.changeTableRow(data)})PubSub.unsubscribe('reqList')PubSub.subscribe('reqList',()=>{this.reqList()})}changeTableRow = (rowData)=>{let cloneTableData = cloneDeep(this.state.data)let index = cloneTableData.findIndex(val=>val.name === rowData.name)cloneTableData[index] = rowDatathis.setState({data:cloneTableData})this.props['closeModal']()}setTableHandler = (data,type)=>{let tableData = cloneDeep(this.state.data)if(type === 'add'){tableData.push(data)this.setState({data:tableData},()=>{this.props['closeModal']()})}}actionBtn = {marginRight:'12px'}editHandler =(record)=>{this.props.editHandler(record)}deleteHandler = (record)=>{let index = this.state.data.findIndex(item=>item.name === record.name)if(index !== -1){let tableData = cloneDeep(this.state.data)tableData.splice(index,1)this.setState({data:tableData})}}reqList = ()=>{this.setState({data:[{name: '马师',gender: 'woman',work: 'jsCoder',birthDate: '1995-01-04',desc: '描述文字'}]})}render() {return (<div><Table dataSource={this.state.data} rowKey="name" pagination={false}><Column title="姓名" dataIndex="name" key="name" width={120}></Column><Column title="性别" dataIndex="gender" key="gender" width={80} render={(text, record) => {return <span>{this.genderMap[text]}</span>}}></Column><Column title="工作" dataIndex="work" key="work" width={200} render={(text => (<span>{this.workMap[text]}</span>))}></Column><Column title="出生日期" dataIndex="birthDate" key="birthDate" width={200}></Column><Column title="描述" dataIndex="desc" key="desc"></Column><Column title="操作" key="action" width={280} render={(text,record) => (<div><Button type='primary' style={this.actionBtn} onClick={()=>this.editHandler(record)} >编辑</Button><Button style={this.actionBtn} onClick={()=>this.deleteHandler(record)}>删除</Button></div>)}></Column></Table></div>)}
})

表单组件 globalForm.jsx

import React, { Component, forwardRef, createRef } from 'react'
import withRouter from '../../utils/withRouter'
import { InboxOutlined, UploadOutlined } from '@ant-design/icons';
import PubSub from 'pubsub-js';
import {Input,Form,Radio,Select,DatePicker
} from 'antd';
import dayjs from 'dayjs';
const { Option } = Select;
const { TextArea } = Input;
const formItemLayout = {labelCol: {span: 6,},wrapperCol: {span: 14,},
};
const normFile = (e) => {if (Array.isArray(e)) {return e;}return e?.fileList;
};
const onFinish = (values) => {
};const GlobalForm = withRouter(class index extends Component {state = {formData: {name: '',gender: true,work: null,desc: '',birthDate: null,}}workList = [{label: '前端',value: 'jsCoder'},{label: '后端',value: 'pythonCoder'}]changeFormItem = (e, name) => {switch (name) {case 'work':this.setFormValue(e, name)case 'birthDate':this.setFormValue(e, name)breakdefault:this.setFormValue(e.target.value, name)}}setFormValue = (value, key, fn) => {let _formData = this.state.formData_formData[key] = valuethis.setState({ formData: _formData }, () => {if (fn) {fn()}})}changeDate = (date, dateString) => {this.setFormValue(dateString, 'birthDate')}componentDidMount() {PubSub.unsubscribe('getFormData')PubSub.subscribe('getFormData', (msg, data) => {if (data === 'add') {this.formRef.current.validateFields().then((value) => {this.props.sendFormData(this.state.formData, 'add')}).catch((error) => {})} else if (data === 'edit') {this.formRef.current.validateFields().then((value) => {this.props.sendFormData(this.state.formData, 'edit')}).catch((error) => {})}})PubSub.unsubscribe('editForm')PubSub.subscribe('editForm', (msg, data) => {data.birthDate = dayjs(data.birthDate)this.setState({ formData: data }, () => {for (let item in data) {this.formRef.current.setFieldValue(item, data[item])}})})}componentDidUpdate() {}componentWillUnmount() {PubSub.unsubscribe('getFormData')PubSub.unsubscribe('editForm')}formRef = createRef()render() {return (<div><Formref={this.formRef}name="validate_other"{...formItemLayout}onFinish={onFinish}initialValues={this.state.formData}style={{maxWidth: 600,}}><Form.Itemname="name"label="姓名"hasFeedbackrules={[{required: true,message: '请输入名字',},]}><Input placeholder="请输入姓名" onChange={(e) => this.changeFormItem(e, 'name')} value={this.state.formData.name}></Input></Form.Item><Form.Item name="gender" label="性别" rules={[{required: true,message: '请选择性别',},]}><Radio.Group value={this.state.formData.gender} onChange={(e) => this.changeFormItem(e, 'gender')}><Radio value="man">男</Radio><Radio value="woman">女</Radio></Radio.Group></Form.Item><Form.Item name="work" label="工作" rules={[{required: true,message: '请选择工作',},]}><Select value={this.state.formData.work} onChange={(e) => this.changeFormItem(e, 'work')} options={this.workList}></Select></Form.Item><Form.Item name="birthDate" label="出生日期" rules={[{required: true,message: '请选择出生日期',},]}><DatePicker showTime onChange={(date, dateString) => this.changeDate(date, dateString)} defaultValue={dayjs(this.state.formData.birthDate, 'YYYY/MM/DD')} format='YYYY/MM/DD' /></Form.Item><Form.Item name="desc" label="描述"><TextAreashowCountmaxLength={100}style={{height: 120,marginBottom: 24,}}value={this.state.formData.desc}onChange={(e) => this.changeFormItem(e, 'desc')}placeholder="请输入描述内容"/></Form.Item></Form></div>)}
})export default forwardRef((props, ref) => {return <GlobalForm {...props} forwardRef={ref}></GlobalForm>
})

公共外套组件 withRouter.jsx

import {useLocation,useNavigate,useParams,} from "react-router-dom";function withRouter(Component) {function ComponentWithRouterProp(props) {let location = useLocation();let navigate = useNavigate();let params = useParams();return (<Component{...props}router={{ location, navigate, params }}/>);}return ComponentWithRouterProp;}export default withRouter